---
_id: '63676'
abstract:
- lang: eng
text: "\r\n Purpose\r\n The
purpose of this paper is to develop new methods of error representation to improve
the accuracy and numerical efficiency of a posteriori and goal-oriented adaptive
framework of elastoplasticity with Prandtl–Reuss type material laws.\r\n
\ \r\n \r\n Design/methodology/approach\r\n
\ To obtain new methods of error representation for
a posteriori and goal-oriented error estimators, weak forms of primal and dual
problems are investigated starting with the initial boundary value problem (IBVP).
Then, we approximate both problems using temporal discretization. Additionally,
we introduce a secant form considering the nonlinearity of elasto-plastic constitutive
equations, which is approximated by a tangent form. Finally, we obtain numerical
primal and dual solutions and their corresponding error approximations of discretized
primal and dual problems, allowing to build several goal-oriented a posteriori
error estimators on temporal and spatial adaptive refinement by inserting primal
solutions, dual solutions and their error approximations as arguments in residuals
of both weak forms as well as in the secant form of the bilinear residual.\r\n
\ \r\n \r\n Findings\r\n
\ An elasto-plastic material is investigated in a framework
of goal-oriented error estimator by using separately several methods of error
representation to deal with either temporal or spatial adaptive refinement, as
well as with both refinements leading to an effective reduction of computational
effort. Specifically, new error representations based on goal-oriented error estimators
are presented and obtained from primal and dual residuals, which use only primal
solutions or only dual solutions or a combination of primal and dual solutions
as arguments. Error representations obtained from primal residuals and evaluated
using only primal arguments do not require the formulation of a dual problem.\r\n
\ \r\n \r\n Research
limitations/implications\r\n The effectiveness
of the different proposed methods is illustrated by an example of a perforated
sheet for adaptive spatial refinement where new mesh adaptation methods of error
representation are compared against existing mesh adaptation methods such as uniform
mesh refinement, mesh refinement based on gradient indicators and adjoint-based
methods in literature. The framework generates a balanced mesh consisting of fine,
medium and coarse elements for accurate results, avoiding a numerically costly
simulation with only fine elements.\r\n \r\n
\ \r\n Originality/value\r\n
\ All new proposed methods of error representation successfully
estimate actual errors during mesh adaptivity. Furthermore, the proposed methods
of error representation allow us to obtain significant reduction and equidistribution
of spatial error at the end of the mesh adaptivity process. Their application
to a framework of goal-oriented error estimation due to time and mesh adaptivity
remains an open issue.\r\n "
author:
- first_name: Arnold
full_name: Tchomgue Simeu, Arnold
id: '83075'
last_name: Tchomgue Simeu
- first_name: Ismail
full_name: Caylak, Ismail
id: '75'
last_name: Caylak
- first_name: Richard
full_name: Ostwald, Richard
id: '106876'
last_name: Ostwald
orcid: 0000-0003-2147-8444
citation:
ama: Tchomgue Simeu A, Caylak I, Ostwald R. Error representations for goal-oriented
a posteriori error estimation in elasto-plasticity
with applications to mesh adaptivity. Engineering Computations. Published
online 2026:1-40. doi:10.1108/ec-12-2023-0975
apa: Tchomgue Simeu, A., Caylak, I., & Ostwald, R. (2026). Error representations
for goal-oriented a posteriori error
estimation in elasto-plasticity with applications to mesh adaptivity. Engineering
Computations, 1–40. https://doi.org/10.1108/ec-12-2023-0975
bibtex: '@article{Tchomgue Simeu_Caylak_Ostwald_2026, title={Error representations
for goal-oriented a posteriori error
estimation in elasto-plasticity with applications to mesh adaptivity}, DOI={10.1108/ec-12-2023-0975}, journal={Engineering
Computations}, publisher={Emerald}, author={Tchomgue Simeu, Arnold and Caylak,
Ismail and Ostwald, Richard}, year={2026}, pages={1–40} }'
chicago: Tchomgue Simeu, Arnold, Ismail Caylak, and Richard Ostwald. “Error Representations
for Goal-Oriented a Posteriori Error
Estimation in Elasto-Plasticity with Applications to Mesh Adaptivity.” Engineering
Computations, 2026, 1–40. https://doi.org/10.1108/ec-12-2023-0975.
ieee: 'A. Tchomgue Simeu, I. Caylak, and R. Ostwald, “Error representations for
goal-oriented a posteriori error
estimation in elasto-plasticity with applications to mesh adaptivity,” Engineering
Computations, pp. 1–40, 2026, doi: 10.1108/ec-12-2023-0975.'
mla: Tchomgue Simeu, Arnold, et al. “Error Representations for Goal-Oriented
a Posteriori Error Estimation in Elasto-Plasticity
with Applications to Mesh Adaptivity.” Engineering Computations, Emerald,
2026, pp. 1–40, doi:10.1108/ec-12-2023-0975.
short: A. Tchomgue Simeu, I. Caylak, R. Ostwald, Engineering Computations (2026)
1–40.
date_created: 2026-01-21T06:49:18Z
date_updated: 2026-01-21T06:50:58Z
department:
- _id: '9'
- _id: '952'
- _id: '321'
doi: 10.1108/ec-12-2023-0975
language:
- iso: eng
page: 1-40
publication: Engineering Computations
publication_identifier:
issn:
- 0264-4401
- 1758-7077
publication_status: published
publisher: Emerald
quality_controlled: '1'
status: public
title: Error representations for goal-oriented a posteriori error
estimation in elasto-plasticity with applications to mesh adaptivity
type: journal_article
user_id: '85414'
year: '2026'
...
---
_id: '63800'
abstract:
- lang: eng
text: In this contribution, we address the estimation of the frequency-dependent
elastic parameters of polymers in the ultrasound range, which is formulated as
an inverse problem. This inverse problem is implemented as a nonlinear regression-type
optimization problem, in which the simulation signals are fitted to the measurement
signals. These signals consist of displacement responses in waveguides, focusing
on hollow cylindrical geometries to enhance the simulation efficiency. To accelerate
the optimization and reduce the number of model evaluations and wait times, we
propose two novel methods. First, we introduce an adaptation of the Levenberg–Marquardt
method derived from a geometrical interpretation of the least-squares optimization
problem. Second, we introduce an improved objective function based on the autocorrelated
envelopes of the measurement and simulation signals. Given that this study primarily
relies on simulation data to quantify optimization convergence, we aggregate the
expected ranges of realistic material parameters and derive their distributions
to ensure the reproducibility of optimizations with proper measurements. We demonstrate
the effectiveness of our objective function modification and step adaptation for
various materials with isotropic material symmetry by comparing them with the
Broyden–Fletcher–Goldfarb–Shanno method. In all cases, our method reduces the
total number of model evaluations, thereby shortening the time to identify the
material parameters.
author:
- first_name: Dominik
full_name: Itner, Dominik
last_name: Itner
- first_name: Dmitrij
full_name: Dreiling, Dmitrij
id: '32616'
last_name: Dreiling
- first_name: Hauke
full_name: Gravenkamp, Hauke
last_name: Gravenkamp
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
- first_name: Carolin
full_name: Birk, Carolin
last_name: Birk
citation:
ama: Itner D, Dreiling D, Gravenkamp H, Henning B, Birk C. A modified Levenberg–Marquardt
method for estimating the elastic material parameters of polymer waveguides using
residuals between autocorrelated frequency responses. Mechanical Systems and
Signal Processing. 2026;247:113904. doi:https://doi.org/10.1016/j.ymssp.2026.113904
apa: Itner, D., Dreiling, D., Gravenkamp, H., Henning, B., & Birk, C. (2026).
A modified Levenberg–Marquardt method for estimating the elastic material parameters
of polymer waveguides using residuals between autocorrelated frequency responses.
Mechanical Systems and Signal Processing, 247, 113904. https://doi.org/10.1016/j.ymssp.2026.113904
bibtex: '@article{Itner_Dreiling_Gravenkamp_Henning_Birk_2026, title={A modified
Levenberg–Marquardt method for estimating the elastic material parameters of polymer
waveguides using residuals between autocorrelated frequency responses}, volume={247},
DOI={https://doi.org/10.1016/j.ymssp.2026.113904},
journal={Mechanical Systems and Signal Processing}, author={Itner, Dominik and
Dreiling, Dmitrij and Gravenkamp, Hauke and Henning, Bernd and Birk, Carolin},
year={2026}, pages={113904} }'
chicago: 'Itner, Dominik, Dmitrij Dreiling, Hauke Gravenkamp, Bernd Henning, and
Carolin Birk. “A Modified Levenberg–Marquardt Method for Estimating the Elastic
Material Parameters of Polymer Waveguides Using Residuals between Autocorrelated
Frequency Responses.” Mechanical Systems and Signal Processing 247 (2026):
113904. https://doi.org/10.1016/j.ymssp.2026.113904.'
ieee: 'D. Itner, D. Dreiling, H. Gravenkamp, B. Henning, and C. Birk, “A modified
Levenberg–Marquardt method for estimating the elastic material parameters of polymer
waveguides using residuals between autocorrelated frequency responses,” Mechanical
Systems and Signal Processing, vol. 247, p. 113904, 2026, doi: https://doi.org/10.1016/j.ymssp.2026.113904.'
mla: Itner, Dominik, et al. “A Modified Levenberg–Marquardt Method for Estimating
the Elastic Material Parameters of Polymer Waveguides Using Residuals between
Autocorrelated Frequency Responses.” Mechanical Systems and Signal Processing,
vol. 247, 2026, p. 113904, doi:https://doi.org/10.1016/j.ymssp.2026.113904.
short: D. Itner, D. Dreiling, H. Gravenkamp, B. Henning, C. Birk, Mechanical Systems
and Signal Processing 247 (2026) 113904.
date_created: 2026-01-29T08:53:42Z
date_updated: 2026-02-02T12:44:47Z
department:
- _id: '49'
doi: https://doi.org/10.1016/j.ymssp.2026.113904
intvolume: ' 247'
keyword:
- Material parameter estimation
- Waveguide
- Nonlinear optimization
- Inverse problem
- Least squares
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S0888327026000610/pdfft?md5=16e8493b44527f4ab0a6d13f634a01c3&pid=1-s2.0-S0888327026000610-main.pdf
oa: '1'
page: '113904'
project:
- _id: '89'
name: Vollständige Bestimmung der akustischen Materialparameter von Polymeren
publication: Mechanical Systems and Signal Processing
publication_identifier:
issn:
- 0888-3270
publication_status: published
status: public
title: A modified Levenberg–Marquardt method for estimating the elastic material parameters
of polymer waveguides using residuals between autocorrelated frequency responses
type: journal_article
user_id: '32616'
volume: 247
year: '2026'
...
---
_id: '63860'
citation:
ama: Hogan A, Satoh K, Dag H, Turhan A-Y, Roman D, Soylu A, eds. Rules and Reasoning
- 9th International Joint Conference, RuleML+RR 2025, Istanbul, Turkey, September
22-24, 2025, Proceedings. Vol 16144. Springer; 2026. doi:10.1007/978-3-032-08887-1
apa: Hogan, A., Satoh, K., Dag, H., Turhan, A.-Y., Roman, D., & Soylu, A. (Eds.).
(2026). Rules and Reasoning - 9th International Joint Conference, RuleML+RR
2025, Istanbul, Turkey, September 22-24, 2025, Proceedings (Vol. 16144). Springer.
https://doi.org/10.1007/978-3-032-08887-1
bibtex: '@book{Hogan_Satoh_Dag_Turhan_Roman_Soylu_2026, series={Lecture Notes in
Computer Science}, title={Rules and Reasoning - 9th International Joint Conference,
RuleML+RR 2025, Istanbul, Turkey, September 22-24, 2025, Proceedings}, volume={16144},
DOI={10.1007/978-3-032-08887-1},
publisher={Springer}, year={2026}, collection={Lecture Notes in Computer Science}
}'
chicago: Hogan, Aidan, Ken Satoh, Hasan Dag, Anni-Yasmin Turhan, Dumitru Roman,
and Ahmet Soylu, eds. Rules and Reasoning - 9th International Joint Conference,
RuleML+RR 2025, Istanbul, Turkey, September 22-24, 2025, Proceedings. Vol.
16144. Lecture Notes in Computer Science. Springer, 2026. https://doi.org/10.1007/978-3-032-08887-1.
ieee: A. Hogan, K. Satoh, H. Dag, A.-Y. Turhan, D. Roman, and A. Soylu, Eds., Rules
and Reasoning - 9th International Joint Conference, RuleML+RR 2025, Istanbul,
Turkey, September 22-24, 2025, Proceedings, vol. 16144. Springer, 2026.
mla: Hogan, Aidan, et al., editors. Rules and Reasoning - 9th International Joint
Conference, RuleML+RR 2025, Istanbul, Turkey, September 22-24, 2025, Proceedings.
Springer, 2026, doi:10.1007/978-3-032-08887-1.
short: A. Hogan, K. Satoh, H. Dag, A.-Y. Turhan, D. Roman, A. Soylu, eds., Rules
and Reasoning - 9th International Joint Conference, RuleML+RR 2025, Istanbul,
Turkey, September 22-24, 2025, Proceedings, Springer, 2026.
date_created: 2026-02-04T07:12:48Z
date_updated: 2026-02-04T07:13:38Z
doi: 10.1007/978-3-032-08887-1
editor:
- first_name: Aidan
full_name: Hogan, Aidan
last_name: Hogan
- first_name: Ken
full_name: Satoh, Ken
last_name: Satoh
- first_name: Hasan
full_name: Dag, Hasan
last_name: Dag
- first_name: Anni-Yasmin
full_name: Turhan, Anni-Yasmin
id: '104470'
last_name: Turhan
- first_name: Dumitru
full_name: Roman, Dumitru
last_name: Roman
- first_name: Ahmet
full_name: Soylu, Ahmet
last_name: Soylu
intvolume: ' 16144'
language:
- iso: eng
publication_identifier:
isbn:
- 978-3-032-08886-4
publisher: Springer
series_title: Lecture Notes in Computer Science
status: public
title: Rules and Reasoning - 9th International Joint Conference, RuleML+RR 2025, Istanbul,
Turkey, September 22-24, 2025, Proceedings
type: conference_editor
user_id: '117185'
volume: 16144
year: '2026'
...
---
_id: '63881'
abstract:
- lang: eng
text: |-
Abstract
The relationship between leptin levels and psychiatric disorders has been studied more extensively in adults than in children and adolescents. However, the results are conflicting. We investigated serum leptin levels in children and adolescents (11 to 18.9 years) with psychiatric disorders (
n
= 363). Absolute and relative (body-mass-index (BMI)-, sex- and pubertal-stage-adjusted z-scores using reference values of healthy children and adolescents) leptin levels of different patient groups according to diagnosis were compared. The association between leptin levels and depression (Beck Depression Inventory-II) and anxiety (Child Behavior Checklist and Youth Self Report) was examined using regression analysis. Leptin z-scores were higher in patients with psychiatric disorders than in healthy controls (median 1.50,
p
< .001). While global tests suggested differences in leptin z-scores between patients with different psychiatric disorders, these differences could not be attributed to diagnosis groups in post-hoc pairwise comparisons. Absolute leptin levels differed between psychiatric disorders (
p
< .001). Patients with anorexia nervosa (AN) had the lowest levels, and patients with mood disorders had higher leptin levels than patients with mental disorders other than mood disorders, anxiety or AN. Neither absolute nor relative leptin levels were related to depressive or anxiety symptoms in regression models adjusted for sex and BMI. Significantly elevated BMI-, sex- and puberty-stage-adjusted leptin levels were observed in children and adolescents with psychiatric disorders compared to a reference sample. Further controlled studies are needed to confirm and explain this finding. No relationship was found between absolute or relative leptin levels and symptoms of depression or anxiety.
author:
- first_name: Nicola
full_name: Albers, Nicola
last_name: Albers
- first_name: Jochen
full_name: Antel, Jochen
last_name: Antel
- first_name: Manuel
full_name: Föcker, Manuel
last_name: Föcker
- first_name: Lars
full_name: Libuda, Lars
last_name: Libuda
- first_name: Judith
full_name: Bühlmeier, Judith
last_name: Bühlmeier
- first_name: Raphael
full_name: Hirtz, Raphael
last_name: Hirtz
- first_name: Jochen
full_name: Seitz, Jochen
last_name: Seitz
- first_name: Anke
full_name: Hinney, Anke
last_name: Hinney
- first_name: Johannes
full_name: Hebebrand, Johannes
last_name: Hebebrand
- first_name: Triinu
full_name: Peters, Triinu
last_name: Peters
citation:
ama: Albers N, Antel J, Föcker M, et al. Children and adolescents with psychiatric
disorders have high relative leptin levels upon adjustment for sex, BMI, and pubertal
status. European Child & Adolescent Psychiatry. Published online
2026. doi:10.1007/s00787-025-02921-4
apa: Albers, N., Antel, J., Föcker, M., Libuda, L., Bühlmeier, J., Hirtz, R., Seitz,
J., Hinney, A., Hebebrand, J., & Peters, T. (2026). Children and adolescents
with psychiatric disorders have high relative leptin levels upon adjustment for
sex, BMI, and pubertal status. European Child & Adolescent Psychiatry.
https://doi.org/10.1007/s00787-025-02921-4
bibtex: '@article{Albers_Antel_Föcker_Libuda_Bühlmeier_Hirtz_Seitz_Hinney_Hebebrand_Peters_2026,
title={Children and adolescents with psychiatric disorders have high relative
leptin levels upon adjustment for sex, BMI, and pubertal status}, DOI={10.1007/s00787-025-02921-4},
journal={European Child & Adolescent Psychiatry}, publisher={Springer
Science and Business Media LLC}, author={Albers, Nicola and Antel, Jochen and
Föcker, Manuel and Libuda, Lars and Bühlmeier, Judith and Hirtz, Raphael and Seitz,
Jochen and Hinney, Anke and Hebebrand, Johannes and Peters, Triinu}, year={2026}
}'
chicago: Albers, Nicola, Jochen Antel, Manuel Föcker, Lars Libuda, Judith Bühlmeier,
Raphael Hirtz, Jochen Seitz, Anke Hinney, Johannes Hebebrand, and Triinu Peters.
“Children and Adolescents with Psychiatric Disorders Have High Relative Leptin
Levels upon Adjustment for Sex, BMI, and Pubertal Status.” European Child &
Adolescent Psychiatry, 2026. https://doi.org/10.1007/s00787-025-02921-4.
ieee: 'N. Albers et al., “Children and adolescents with psychiatric disorders
have high relative leptin levels upon adjustment for sex, BMI, and pubertal status,”
European Child & Adolescent Psychiatry, 2026, doi: 10.1007/s00787-025-02921-4.'
mla: Albers, Nicola, et al. “Children and Adolescents with Psychiatric Disorders
Have High Relative Leptin Levels upon Adjustment for Sex, BMI, and Pubertal Status.”
European Child & Adolescent Psychiatry, Springer Science and Business
Media LLC, 2026, doi:10.1007/s00787-025-02921-4.
short: N. Albers, J. Antel, M. Föcker, L. Libuda, J. Bühlmeier, R. Hirtz, J. Seitz,
A. Hinney, J. Hebebrand, T. Peters, European Child & Adolescent Psychiatry
(2026).
date_created: 2026-02-05T09:21:46Z
date_updated: 2026-02-05T09:22:02Z
department:
- _id: '35'
- _id: '17'
- _id: '22'
doi: 10.1007/s00787-025-02921-4
language:
- iso: eng
publication: European Child & Adolescent Psychiatry
publication_identifier:
issn:
- 1018-8827
- 1435-165X
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Children and adolescents with psychiatric disorders have high relative leptin
levels upon adjustment for sex, BMI, and pubertal status
type: journal_article
user_id: '88682'
year: '2026'
...
---
_id: '63880'
author:
- first_name: Nadja
full_name: Knoll-Pientka, Nadja
last_name: Knoll-Pientka
- first_name: Dorina
full_name: Schils, Dorina
last_name: Schils
- first_name: Katrin
full_name: Mantwill, Katrin
last_name: Mantwill
- first_name: Hannah
full_name: Dinse, Hannah
last_name: Dinse
- first_name: Eva-Maria
full_name: Skoda, Eva-Maria
last_name: Skoda
- first_name: Alexander
full_name: Bäuerle, Alexander
last_name: Bäuerle
- first_name: Martin
full_name: Teufel, Martin
last_name: Teufel
- first_name: Lars
full_name: Libuda, Lars
last_name: Libuda
citation:
ama: Knoll-Pientka N, Schils D, Mantwill K, et al. Adherence to dietary recommendations
according to the General Dietary Behavior Inventory (GDBI) and its association
with bioelectrical impedance analysis (BIA) parameters among young, healthy and
normal weight women. BMC Nutrition. Published online 2026. doi:10.1186/s40795-026-01260-0
apa: Knoll-Pientka, N., Schils, D., Mantwill, K., Dinse, H., Skoda, E.-M., Bäuerle,
A., Teufel, M., & Libuda, L. (2026). Adherence to dietary recommendations
according to the General Dietary Behavior Inventory (GDBI) and its association
with bioelectrical impedance analysis (BIA) parameters among young, healthy and
normal weight women. BMC Nutrition. https://doi.org/10.1186/s40795-026-01260-0
bibtex: '@article{Knoll-Pientka_Schils_Mantwill_Dinse_Skoda_Bäuerle_Teufel_Libuda_2026,
title={Adherence to dietary recommendations according to the General Dietary Behavior
Inventory (GDBI) and its association with bioelectrical impedance analysis (BIA)
parameters among young, healthy and normal weight women}, DOI={10.1186/s40795-026-01260-0},
journal={BMC Nutrition}, publisher={Springer Science and Business Media LLC},
author={Knoll-Pientka, Nadja and Schils, Dorina and Mantwill, Katrin and Dinse,
Hannah and Skoda, Eva-Maria and Bäuerle, Alexander and Teufel, Martin and Libuda,
Lars}, year={2026} }'
chicago: Knoll-Pientka, Nadja, Dorina Schils, Katrin Mantwill, Hannah Dinse, Eva-Maria
Skoda, Alexander Bäuerle, Martin Teufel, and Lars Libuda. “Adherence to Dietary
Recommendations According to the General Dietary Behavior Inventory (GDBI) and
Its Association with Bioelectrical Impedance Analysis (BIA) Parameters among Young,
Healthy and Normal Weight Women.” BMC Nutrition, 2026. https://doi.org/10.1186/s40795-026-01260-0.
ieee: 'N. Knoll-Pientka et al., “Adherence to dietary recommendations according
to the General Dietary Behavior Inventory (GDBI) and its association with bioelectrical
impedance analysis (BIA) parameters among young, healthy and normal weight women,”
BMC Nutrition, 2026, doi: 10.1186/s40795-026-01260-0.'
mla: Knoll-Pientka, Nadja, et al. “Adherence to Dietary Recommendations According
to the General Dietary Behavior Inventory (GDBI) and Its Association with Bioelectrical
Impedance Analysis (BIA) Parameters among Young, Healthy and Normal Weight Women.”
BMC Nutrition, Springer Science and Business Media LLC, 2026, doi:10.1186/s40795-026-01260-0.
short: N. Knoll-Pientka, D. Schils, K. Mantwill, H. Dinse, E.-M. Skoda, A. Bäuerle,
M. Teufel, L. Libuda, BMC Nutrition (2026).
date_created: 2026-02-05T09:20:38Z
date_updated: 2026-02-05T09:21:23Z
department:
- _id: '35'
- _id: '17'
- _id: '22'
doi: 10.1186/s40795-026-01260-0
language:
- iso: eng
publication: BMC Nutrition
publication_identifier:
issn:
- 2055-0928
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Adherence to dietary recommendations according to the General Dietary Behavior
Inventory (GDBI) and its association with bioelectrical impedance analysis (BIA)
parameters among young, healthy and normal weight women
type: journal_article
user_id: '88682'
year: '2026'
...
---
_id: '63890'
abstract:
- lang: eng
text: The computation of highly contracted electron repulsion integrals (ERIs) is
essential to achieve quantum accuracy in atomistic simulations based on quantum
mechanics. Its growing computational demands make energy efficiency a critical
concern. Recent studies demonstrate FPGAs’ superior performance and energy efficiency
for computing primitive ERIs, but the computation of highly contracted ERIs introduces
significant algorithmic complexity and new design challenges for FPGA acceleration.In
this work, we present SORCERI, the first streaming overlay acceleration for highly
contracted ERI computations on FPGAs. SORCERI introduces a novel streaming Rys
computing unit to calculate roots and weights of Rys polynomials on-chip, and
a streaming contraction unit for the contraction of primitive ERIs. This shifts
the design bottleneck from limited CPU-FPGA communication bandwidth to available
FPGA computation resources. To address practical deployment challenges for a large
number of quartet classes, we design three streaming overlays, together with an
efficient memory transpose optimization, to cover the 21 most commonly used quartet
classes in realistic atomistic simulations. To address the new computation constraints,
we use flexible calculation stages with a free-running streaming architecture
to achieve high DSP utilization and good timing closure.Experiments demonstrate
that SORCERI achieves an average 5.96x, 1.99x, and 1.16x better performance per
watt than libint on a 64-core AMD EPYC 7713 CPU, libintx on an Nvidia A40 GPU,
and SERI, the prior best-performing FPGA design for primitive ERIs. Furthermore,
SORCERI reaches a peak throughput of 44.11 GERIS (109 ERIs per second) that is
1.52x, 1.13x, and 1.93x greater than libint, libintx and SERI, respectively. SORCERI
will be released soon at https://github.com/SFU-HiAccel/SORCERI.
author:
- first_name: Philip
full_name: Stachura, Philip
last_name: Stachura
- first_name: Xin
full_name: Wu, Xin
id: '77439'
last_name: Wu
- first_name: Christian
full_name: Plessl, Christian
id: '16153'
last_name: Plessl
orcid: 0000-0001-5728-9982
- first_name: Zhenman
full_name: Fang, Zhenman
last_name: Fang
citation:
ama: 'Stachura P, Wu X, Plessl C, Fang Z. SORCERI: Streaming Overlay Acceleration
for Highly Contracted Electron Repulsion Integral Computations in Quantum Chemistry.
In: Proceedings of the 2026 ACM/SIGDA International Symposium on Field Programmable
Gate Arrays (FPGA ’26). Association for Computing Machinery; 2026:224-234.
doi:10.1145/3748173.3779198'
apa: 'Stachura, P., Wu, X., Plessl, C., & Fang, Z. (2026). SORCERI: Streaming
Overlay Acceleration for Highly Contracted Electron Repulsion Integral Computations
in Quantum Chemistry. Proceedings of the 2026 ACM/SIGDA International Symposium
on Field Programmable Gate Arrays (FPGA ’26), 224–234. https://doi.org/10.1145/3748173.3779198'
bibtex: '@inproceedings{Stachura_Wu_Plessl_Fang_2026, place={New York, NY, USA},
title={SORCERI: Streaming Overlay Acceleration for Highly Contracted Electron
Repulsion Integral Computations in Quantum Chemistry}, DOI={10.1145/3748173.3779198},
booktitle={Proceedings of the 2026 ACM/SIGDA International Symposium on Field
Programmable Gate Arrays (FPGA ’26)}, publisher={Association for Computing Machinery},
author={Stachura, Philip and Wu, Xin and Plessl, Christian and Fang, Zhenman},
year={2026}, pages={224–234} }'
chicago: 'Stachura, Philip, Xin Wu, Christian Plessl, and Zhenman Fang. “SORCERI:
Streaming Overlay Acceleration for Highly Contracted Electron Repulsion Integral
Computations in Quantum Chemistry.” In Proceedings of the 2026 ACM/SIGDA International
Symposium on Field Programmable Gate Arrays (FPGA ’26), 224–34. New York,
NY, USA: Association for Computing Machinery, 2026. https://doi.org/10.1145/3748173.3779198.'
ieee: 'P. Stachura, X. Wu, C. Plessl, and Z. Fang, “SORCERI: Streaming Overlay Acceleration
for Highly Contracted Electron Repulsion Integral Computations in Quantum Chemistry,”
in Proceedings of the 2026 ACM/SIGDA International Symposium on Field Programmable
Gate Arrays (FPGA ’26), 2026, pp. 224–234, doi: 10.1145/3748173.3779198.'
mla: 'Stachura, Philip, et al. “SORCERI: Streaming Overlay Acceleration for Highly
Contracted Electron Repulsion Integral Computations in Quantum Chemistry.” Proceedings
of the 2026 ACM/SIGDA International Symposium on Field Programmable Gate Arrays
(FPGA ’26), Association for Computing Machinery, 2026, pp. 224–34, doi:10.1145/3748173.3779198.'
short: 'P. Stachura, X. Wu, C. Plessl, Z. Fang, in: Proceedings of the 2026 ACM/SIGDA
International Symposium on Field Programmable Gate Arrays (FPGA ’26), Association
for Computing Machinery, New York, NY, USA, 2026, pp. 224–234.'
date_created: 2026-02-06T06:43:22Z
date_updated: 2026-02-09T09:16:32Z
department:
- _id: '27'
- _id: '518'
doi: 10.1145/3748173.3779198
keyword:
- electron repulsion integrals
- quantum chemistry
- atomistic simulation
- overlay architecture
- fpga acceleration
language:
- iso: eng
main_file_link:
- url: https://dl.acm.org/doi/10.1145/3748173.3779198
page: 224-234
place: New York, NY, USA
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Proceedings of the 2026 ACM/SIGDA International Symposium on Field Programmable
Gate Arrays (FPGA '26)
publication_identifier:
isbn:
- '9798400720796'
publication_status: published
publisher: Association for Computing Machinery
status: public
title: 'SORCERI: Streaming Overlay Acceleration for Highly Contracted Electron Repulsion
Integral Computations in Quantum Chemistry'
type: conference
user_id: '77439'
year: '2026'
...
---
_id: '63835'
abstract:
- lang: eng
text: This article examines the liquidity effects of a wealth tax on residential
rental real estate. Using data from a real estate corporation, we simulate the
effects of a wealth tax on cash flows from the rental operations. The level of
detail of the data enables us to conduct analyses at the annual, regional and
year of construction level. A comparison with real estate data from other sources
supports external validity. The results of the simulation show that the introduction
of a wealth tax can significantly reduce the cash flow from rental operations
and lead to liquidity problems. On average over all observations, a wealth tax
rate of 2% leads to a negative cash flow after all costs. In general, this finding
implies that growth-oriented real estate is more affected by a wealth tax in terms
of liquidity than rental yield-oriented real estate. Particularly in large cities
with high market values but relatively low rents, the liquidity effects can be
more than three times as high as in rural or industrial regions – potentially
leading to a relative loss of investment attractiveness. As a wealth tax is decoupled
from rental income, the tax burden is very sensitive to market developments, including
the interest rate environment. As a result, investments in residential rental
real estate are exposed to additional uncertainty. This additional tax uncertainty
might impair the willingness to invest and should therefore be taken into account
in political discussions on the reintroduction of a wealth tax.
author:
- first_name: Ralf
full_name: Maiterth, Ralf
last_name: Maiterth
- first_name: Yuri
full_name: Piper, Yuri
id: '49955'
last_name: Piper
- first_name: Caren
full_name: Sureth-Sloane, Caren
id: '530'
last_name: Sureth-Sloane
orcid: ' 0000-0002-8183-5901'
citation:
ama: Maiterth R, Piper Y, Sureth-Sloane C. Liquidity Effects of a Wealth Tax
on Residential Rental Real Estate.; 2026. doi:10.2139/ssrn.6147767
apa: Maiterth, R., Piper, Y., & Sureth-Sloane, C. (2026). Liquidity Effects
of a Wealth Tax on Residential Rental Real Estate. https://doi.org/10.2139/ssrn.6147767
bibtex: '@book{Maiterth_Piper_Sureth-Sloane_2026, series={TRR 266 Accounting for
Transparency Working Paper Series No. 221}, title={Liquidity Effects of a Wealth
Tax on Residential Rental Real Estate}, DOI={10.2139/ssrn.6147767},
author={Maiterth, Ralf and Piper, Yuri and Sureth-Sloane, Caren}, year={2026},
collection={TRR 266 Accounting for Transparency Working Paper Series No. 221}
}'
chicago: Maiterth, Ralf, Yuri Piper, and Caren Sureth-Sloane. Liquidity Effects
of a Wealth Tax on Residential Rental Real Estate. TRR 266 Accounting for
Transparency Working Paper Series No. 221, 2026. https://doi.org/10.2139/ssrn.6147767.
ieee: R. Maiterth, Y. Piper, and C. Sureth-Sloane, Liquidity Effects of a Wealth
Tax on Residential Rental Real Estate. 2026.
mla: Maiterth, Ralf, et al. Liquidity Effects of a Wealth Tax on Residential
Rental Real Estate. 2026, doi:10.2139/ssrn.6147767.
short: R. Maiterth, Y. Piper, C. Sureth-Sloane, Liquidity Effects of a Wealth Tax
on Residential Rental Real Estate, 2026.
date_created: 2026-02-02T13:38:29Z
date_updated: 2026-02-09T11:18:25Z
department:
- _id: '187'
doi: 10.2139/ssrn.6147767
jel:
- H22
- H23
- H24
- R31
language:
- iso: eng
publication_status: published
series_title: TRR 266 Accounting for Transparency Working Paper Series No. 221
status: public
title: Liquidity Effects of a Wealth Tax on Residential Rental Real Estate
type: working_paper
user_id: '96670'
year: '2026'
...
---
_id: '64187'
abstract:
- lang: eng
text: Carbon fiber-reinforced plastics (CFRPs) have become increasingly
significant in recent decades due to their remarkable mechanical properties and
lightweight nature. This study aims to advance the understanding and simulation
of CFRP behavior through the development of a hyperelastic-plastic-damage homogenization
method combined with mean-field theory. The material responses of both the fiber
and matrix are modeled using strain energy functions that account for damage evolution,
while a complete linearization of the homogenization process is derived to ensure
the consistent implementation of the Newton–Raphson iteration scheme in large
deformation simulations. The innovative aspect of this work lies in the constitutive
linearization for the hyperelastic-plastic-damage formulation within a mean-field
homogenization framework, providing an efficient Newton algorithm for modeling
the nonlinear behavior of CFRP. A failure criterion for the hyperelastic model
of fibers is introduced, along with a damage saturation variable in rate form
for the matrix, effectively capturing damage evolution. Through discrete formulations
for the homogenization, the proposed model’s capability is demonstrated via three
numerical examples and validated against experimental investigations, proving
its effectiveness and reliability in simulating CFRP damage.
article_number: '10812865261420809'
author:
- first_name: Yingjie
full_name: Zhan, Yingjie
id: '93591'
last_name: Zhan
- first_name: Ismail
full_name: Caylak, Ismail
last_name: Caylak
- first_name: Richard
full_name: Ostwald, Richard
id: '106876'
last_name: Ostwald
orcid: 0000-0003-2147-8444
- first_name: Rolf
full_name: Mahnken, Rolf
id: '335'
last_name: Mahnken
- first_name: Enrico
full_name: Barth, Enrico
last_name: Barth
- first_name: Eckart
full_name: Uhlmann, Eckart
last_name: Uhlmann
citation:
ama: Zhan Y, Caylak I, Ostwald R, Mahnken R, Barth E, Uhlmann E. A fully implicit
mean-field damage formulation with consistent linearization at large deformations.
Mathematics and Mechanics of Solids. Published online 2026. doi:10.1177/10812865261420809
apa: Zhan, Y., Caylak, I., Ostwald, R., Mahnken, R., Barth, E., & Uhlmann, E.
(2026). A fully implicit mean-field damage formulation with consistent linearization
at large deformations. Mathematics and Mechanics of Solids, Article 10812865261420808.
https://doi.org/10.1177/10812865261420809
bibtex: '@article{Zhan_Caylak_Ostwald_Mahnken_Barth_Uhlmann_2026, title={A fully
implicit mean-field damage formulation with consistent linearization at large
deformations}, DOI={10.1177/10812865261420809},
number={10812865261420808}, journal={Mathematics and Mechanics of Solids}, publisher={SAGE
Publications}, author={Zhan, Yingjie and Caylak, Ismail and Ostwald, Richard and
Mahnken, Rolf and Barth, Enrico and Uhlmann, Eckart}, year={2026} }'
chicago: Zhan, Yingjie, Ismail Caylak, Richard Ostwald, Rolf Mahnken, Enrico Barth,
and Eckart Uhlmann. “A Fully Implicit Mean-Field Damage Formulation with Consistent
Linearization at Large Deformations.” Mathematics and Mechanics of Solids,
2026. https://doi.org/10.1177/10812865261420809.
ieee: 'Y. Zhan, I. Caylak, R. Ostwald, R. Mahnken, E. Barth, and E. Uhlmann, “A
fully implicit mean-field damage formulation with consistent linearization at
large deformations,” Mathematics and Mechanics of Solids, Art. no. 10812865261420808,
2026, doi: 10.1177/10812865261420809.'
mla: Zhan, Yingjie, et al. “A Fully Implicit Mean-Field Damage Formulation with
Consistent Linearization at Large Deformations.” Mathematics and Mechanics
of Solids, 10812865261420808, SAGE Publications, 2026, doi:10.1177/10812865261420809.
short: Y. Zhan, I. Caylak, R. Ostwald, R. Mahnken, E. Barth, E. Uhlmann, Mathematics
and Mechanics of Solids (2026).
date_created: 2026-02-17T11:21:00Z
date_updated: 2026-02-17T11:22:49Z
department:
- _id: '9'
- _id: '952'
- _id: '321'
doi: 10.1177/10812865261420809
language:
- iso: eng
publication: Mathematics and Mechanics of Solids
publication_identifier:
issn:
- 1081-2865
- 1741-3028
publication_status: published
publisher: SAGE Publications
quality_controlled: '1'
status: public
title: A fully implicit mean-field damage formulation with consistent linearization
at large deformations
type: journal_article
user_id: '85414'
year: '2026'
...
---
_id: '64221'
author:
- first_name: Jonas
full_name: Lick, Jonas
last_name: Lick
- first_name: Fiona
full_name: Kattenstroth, Fiona
last_name: Kattenstroth
- first_name: Hendrik
full_name: van der Valk, Hendrik
last_name: van der Valk
- first_name: Malte
full_name: Trienens, Malte
last_name: Trienens
- first_name: Arno
full_name: Kühn, Arno
last_name: Kühn
- first_name: Roman
full_name: Dumitrescu, Roman
id: '16190'
last_name: Dumitrescu
citation:
ama: 'Lick J, Kattenstroth F, van der Valk H, Trienens M, Kühn A, Dumitrescu R.
Characterizing Digital Factory Twins: Deriving Archetypes for Research and Industry.
In: 2025 Winter Simulation Conference (WSC). IEEE; 2026. doi:10.1109/wsc68292.2025.11338979'
apa: 'Lick, J., Kattenstroth, F., van der Valk, H., Trienens, M., Kühn, A., &
Dumitrescu, R. (2026). Characterizing Digital Factory Twins: Deriving Archetypes
for Research and Industry. 2025 Winter Simulation Conference (WSC). https://doi.org/10.1109/wsc68292.2025.11338979'
bibtex: '@inproceedings{Lick_Kattenstroth_van der Valk_Trienens_Kühn_Dumitrescu_2026,
title={Characterizing Digital Factory Twins: Deriving Archetypes for Research
and Industry}, DOI={10.1109/wsc68292.2025.11338979},
booktitle={2025 Winter Simulation Conference (WSC)}, publisher={IEEE}, author={Lick,
Jonas and Kattenstroth, Fiona and van der Valk, Hendrik and Trienens, Malte and
Kühn, Arno and Dumitrescu, Roman}, year={2026} }'
chicago: 'Lick, Jonas, Fiona Kattenstroth, Hendrik van der Valk, Malte Trienens,
Arno Kühn, and Roman Dumitrescu. “Characterizing Digital Factory Twins: Deriving
Archetypes for Research and Industry.” In 2025 Winter Simulation Conference
(WSC). IEEE, 2026. https://doi.org/10.1109/wsc68292.2025.11338979.'
ieee: 'J. Lick, F. Kattenstroth, H. van der Valk, M. Trienens, A. Kühn, and R. Dumitrescu,
“Characterizing Digital Factory Twins: Deriving Archetypes for Research and Industry,”
2026, doi: 10.1109/wsc68292.2025.11338979.'
mla: 'Lick, Jonas, et al. “Characterizing Digital Factory Twins: Deriving Archetypes
for Research and Industry.” 2025 Winter Simulation Conference (WSC), IEEE,
2026, doi:10.1109/wsc68292.2025.11338979.'
short: 'J. Lick, F. Kattenstroth, H. van der Valk, M. Trienens, A. Kühn, R. Dumitrescu,
in: 2025 Winter Simulation Conference (WSC), IEEE, 2026.'
date_created: 2026-02-19T08:56:31Z
date_updated: 2026-02-19T09:00:37Z
department:
- _id: '563'
doi: 10.1109/wsc68292.2025.11338979
language:
- iso: eng
publication: 2025 Winter Simulation Conference (WSC)
publication_status: published
publisher: IEEE
status: public
title: 'Characterizing Digital Factory Twins: Deriving Archetypes for Research and
Industry'
type: conference
user_id: '15782'
year: '2026'
...
---
_id: '64159'
abstract:
- lang: eng
text: "ABSTRACT\r\n Separation
processes, such as distillation and stripping, are highly energy‐intensive. Typically,
energy is supplied indirectly via a reboiler, which is often associated with heat
losses. We present a preliminary theoretical evaluation of a novel concept to
supply energy directly inside the column using heatable structured packings. These
packings can be produced by multi‐material 3D printing, resulting in a conductive
inner layer and an insulating outer layer. Functioning as electric resistance
heaters, these packings serve as heating elements. In this numerical study, we
compared different scenarios of energy supply along the height of the column,
including uniform distribution, applying a temperature profile, and using or omitting
a reboiler."
article_number: e70076
article_type: original
author:
- first_name: Nicole
full_name: Lutters, Nicole
id: '22006'
last_name: Lutters
orcid: 0009-0006-7828-8448
- first_name: Sascha
full_name: Brüne, Sascha
last_name: Brüne
- first_name: Julia
full_name: Riese, Julia
id: '101499'
last_name: Riese
orcid: 0000-0002-3053-0534
citation:
ama: Lutters N, Brüne S, Riese J. Preliminary Numerical Evaluation of Directly Heated
Structured Packings to be Used for Separation Processes. Chemie Ingenieur Technik.
Published online 2026. doi:10.1002/cite.70076
apa: Lutters, N., Brüne, S., & Riese, J. (2026). Preliminary Numerical Evaluation
of Directly Heated Structured Packings to be Used for Separation Processes. Chemie
Ingenieur Technik, Article e70076. https://doi.org/10.1002/cite.70076
bibtex: '@article{Lutters_Brüne_Riese_2026, title={Preliminary Numerical Evaluation
of Directly Heated Structured Packings to be Used for Separation Processes}, DOI={10.1002/cite.70076}, number={e70076},
journal={Chemie Ingenieur Technik}, publisher={Wiley}, author={Lutters, Nicole
and Brüne, Sascha and Riese, Julia}, year={2026} }'
chicago: Lutters, Nicole, Sascha Brüne, and Julia Riese. “Preliminary Numerical
Evaluation of Directly Heated Structured Packings to Be Used for Separation Processes.”
Chemie Ingenieur Technik, 2026. https://doi.org/10.1002/cite.70076.
ieee: 'N. Lutters, S. Brüne, and J. Riese, “Preliminary Numerical Evaluation of
Directly Heated Structured Packings to be Used for Separation Processes,” Chemie
Ingenieur Technik, Art. no. e70076, 2026, doi: 10.1002/cite.70076.'
mla: Lutters, Nicole, et al. “Preliminary Numerical Evaluation of Directly Heated
Structured Packings to Be Used for Separation Processes.” Chemie Ingenieur
Technik, e70076, Wiley, 2026, doi:10.1002/cite.70076.
short: N. Lutters, S. Brüne, J. Riese, Chemie Ingenieur Technik (2026).
date_created: 2026-02-16T07:56:53Z
date_updated: 2026-02-23T06:59:41Z
department:
- _id: '831'
doi: 10.1002/cite.70076
language:
- iso: eng
publication: Chemie Ingenieur Technik
publication_identifier:
issn:
- 0009-286X
- 1522-2640
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Preliminary Numerical Evaluation of Directly Heated Structured Packings to
be Used for Separation Processes
type: journal_article
user_id: '22006'
year: '2026'
...
---
_id: '64593'
author:
- first_name: Fynn Lucas
full_name: Neubert, Fynn Lucas
id: '74308'
last_name: Neubert
orcid: 0009-0006-5243-4531
- first_name: Dominik
full_name: Teutenberg, Dominik
id: '537'
last_name: Teutenberg
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Maxim
full_name: Rodschei, Maxim
last_name: Rodschei
- first_name: Julia
full_name: Mergheim, Julia
last_name: Mergheim
citation:
ama: 'Neubert FL, Teutenberg D, Meschut G, Rodschei M, Mergheim J. Bewitterung in
der Simulation. In: DECHEMA-Workshop Für Klebstoffanwender: Langzeitverhalten
von Klebungen. ; 2026.'
apa: 'Neubert, F. L., Teutenberg, D., Meschut, G., Rodschei, M., & Mergheim,
J. (2026). Bewitterung in der Simulation. DECHEMA-Workshop Für Klebstoffanwender:
Langzeitverhalten von Klebungen. DECHEMA-Workshop für Klebstoffanwender: Langzeitverhalten
von Klebungen, Köln.'
bibtex: '@inproceedings{Neubert_Teutenberg_Meschut_Rodschei_Mergheim_2026, title={Bewitterung
in der Simulation}, booktitle={DECHEMA-Workshop für Klebstoffanwender: Langzeitverhalten
von Klebungen}, author={Neubert, Fynn Lucas and Teutenberg, Dominik and Meschut,
Gerson and Rodschei, Maxim and Mergheim, Julia}, year={2026} }'
chicago: 'Neubert, Fynn Lucas, Dominik Teutenberg, Gerson Meschut, Maxim Rodschei,
and Julia Mergheim. “Bewitterung in Der Simulation.” In DECHEMA-Workshop Für
Klebstoffanwender: Langzeitverhalten von Klebungen, 2026.'
ieee: 'F. L. Neubert, D. Teutenberg, G. Meschut, M. Rodschei, and J. Mergheim, “Bewitterung
in der Simulation,” presented at the DECHEMA-Workshop für Klebstoffanwender: Langzeitverhalten
von Klebungen, Köln, 2026.'
mla: 'Neubert, Fynn Lucas, et al. “Bewitterung in Der Simulation.” DECHEMA-Workshop
Für Klebstoffanwender: Langzeitverhalten von Klebungen, 2026.'
short: 'F.L. Neubert, D. Teutenberg, G. Meschut, M. Rodschei, J. Mergheim, in: DECHEMA-Workshop
Für Klebstoffanwender: Langzeitverhalten von Klebungen, 2026.'
conference:
end_date: 2026-02-09
location: Köln
name: 'DECHEMA-Workshop für Klebstoffanwender: Langzeitverhalten von Klebungen'
start_date: 2026-02-09
date_created: 2026-02-23T13:35:40Z
date_updated: 2026-02-23T13:35:48Z
department:
- _id: '157'
language:
- iso: eng
publication: 'DECHEMA-Workshop für Klebstoffanwender: Langzeitverhalten von Klebungen'
status: public
title: Bewitterung in der Simulation
type: conference_abstract
user_id: '74308'
year: '2026'
...
---
_id: '64251'
abstract:
- lang: eng
text: "ABSTRACT\r\n Clinching
is a widely adopted joining technique in the automotive industry, enabling the
fabrication of lightweight structures from dissimilar sheet materials. Accurate
prediction of the fatigue life of clinched joints is essential for ensuring structural
safety and minimizing development costs. However, full 3D fatigue simulations
over millions of cycles are computationally intensive due to the complexity of
contact mechanics. This study introduces a 2D numerical model that circumvents
direct contact modeling by applying a slip condition at the sheet interface, significantly
reducing computational demands. A micro‐slip friction model is used to represent
the mechanical interface behavior, while a two‐scale damage model captures the
fatigue damage evolution. The model is validated against experimental data and
used to investigate the influence of friction coefficient and tangential contact
stiffness on fatigue life, highlighting its efficiency and predictive capability."
article_number: e70035
author:
- first_name: Chin
full_name: Chen, Chin
id: '114741'
last_name: Chen
- first_name: Martin
full_name: Hofmann, Martin
last_name: Hofmann
- first_name: Thomas
full_name: Wallmersperger, Thomas
last_name: Wallmersperger
citation:
ama: Chen C, Hofmann M, Wallmersperger T. A 2D Approach to Predict the High‐Cycle
Fatigue Life of Clinched Joints. PAMM. 2026;26(1). doi:10.1002/pamm.70035
apa: Chen, C., Hofmann, M., & Wallmersperger, T. (2026). A 2D Approach to Predict
the High‐Cycle Fatigue Life of Clinched Joints. PAMM, 26(1), Article
e70035. https://doi.org/10.1002/pamm.70035
bibtex: '@article{Chen_Hofmann_Wallmersperger_2026, title={A 2D Approach to Predict
the High‐Cycle Fatigue Life of Clinched Joints}, volume={26}, DOI={10.1002/pamm.70035},
number={1e70035}, journal={PAMM}, publisher={Wiley}, author={Chen, Chin and Hofmann,
Martin and Wallmersperger, Thomas}, year={2026} }'
chicago: Chen, Chin, Martin Hofmann, and Thomas Wallmersperger. “A 2D Approach to
Predict the High‐Cycle Fatigue Life of Clinched Joints.” PAMM 26, no. 1
(2026). https://doi.org/10.1002/pamm.70035.
ieee: 'C. Chen, M. Hofmann, and T. Wallmersperger, “A 2D Approach to Predict the
High‐Cycle Fatigue Life of Clinched Joints,” PAMM, vol. 26, no. 1, Art.
no. e70035, 2026, doi: 10.1002/pamm.70035.'
mla: Chen, Chin, et al. “A 2D Approach to Predict the High‐Cycle Fatigue Life of
Clinched Joints.” PAMM, vol. 26, no. 1, e70035, Wiley, 2026, doi:10.1002/pamm.70035.
short: C. Chen, M. Hofmann, T. Wallmersperger, PAMM 26 (2026).
date_created: 2026-02-19T10:03:06Z
date_updated: 2026-02-24T15:10:04Z
doi: 10.1002/pamm.70035
intvolume: ' 26'
issue: '1'
language:
- iso: eng
project:
- _id: '142'
name: TRR 285 - Subproject B03
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '132'
name: TRR 285 - Project Area B
publication: PAMM
publication_identifier:
issn:
- 1617-7061
- 1617-7061
publication_status: published
publisher: Wiley
status: public
title: A 2D Approach to Predict the High‐Cycle Fatigue Life of Clinched Joints
type: journal_article
user_id: '114741'
volume: 26
year: '2026'
...
---
_id: '64813'
abstract:
- lang: eng
text: This paper describes the development of a method concept for the mechanical
characterisation of cathodic electrodeposition (CED) coatings in the context of
adhesively bonded joints. The objective is to determine mechanical properties
of coating layer in order to incorporate its influence into numerical simulation
models for load-bearing adhesive joints. For this purpose, both single-lap joints
(SLJ) and modified thick adherend shear specimens (TASS) with defined CED coating
layers were produced and tested under quasi-static loading conditions. Additionally,
the deposition process was analysed in terms of coating thickness evolution as
a function of deposition time and applied voltage. The specimens were pre-cured
to reduce gas inclusions from evaporating solvents in the CED coating layer. The
pre-curing temperature was determined using DSC. The results indicate that the
modified TASS configuration is particularly suited for the reproducible evaluation
of the shear load-bearing capacity. In comparison to the SLJ, it favours the degassing
of solvents through the installation of grooves. Furthermore, it is demonstrated
that gas-induced defect zones originating from the electrochemical deposition
process significantly compromise joint performance. The experimental and process
methodology developed in this study enables isolated characterisation of the coating
layer and provides a solid foundation for simulation of coated adhesive joints.
author:
- first_name: Julia
full_name: Hofmann, Julia
id: '104312'
last_name: Hofmann
- first_name: Dominik
full_name: Teutenberg, Dominik
id: '537'
last_name: Teutenberg
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: Hofmann J, Teutenberg D, Meschut G. Method development for the mechanical characterisation
of cathodic electrodeposition coatings for numerical simulation of bonded joints.
The Journal of Adhesion. Published online 2026:1-16. doi:10.1080/00218464.2026.2621198
apa: Hofmann, J., Teutenberg, D., & Meschut, G. (2026). Method development for
the mechanical characterisation of cathodic electrodeposition coatings for numerical
simulation of bonded joints. The Journal of Adhesion, 1–16. https://doi.org/10.1080/00218464.2026.2621198
bibtex: '@article{Hofmann_Teutenberg_Meschut_2026, title={Method development for
the mechanical characterisation of cathodic electrodeposition coatings for numerical
simulation of bonded joints}, DOI={10.1080/00218464.2026.2621198},
journal={The Journal of Adhesion}, publisher={Informa UK Limited}, author={Hofmann,
Julia and Teutenberg, Dominik and Meschut, Gerson}, year={2026}, pages={1–16}
}'
chicago: Hofmann, Julia, Dominik Teutenberg, and Gerson Meschut. “Method Development
for the Mechanical Characterisation of Cathodic Electrodeposition Coatings for
Numerical Simulation of Bonded Joints.” The Journal of Adhesion, 2026,
1–16. https://doi.org/10.1080/00218464.2026.2621198.
ieee: 'J. Hofmann, D. Teutenberg, and G. Meschut, “Method development for the mechanical
characterisation of cathodic electrodeposition coatings for numerical simulation
of bonded joints,” The Journal of Adhesion, pp. 1–16, 2026, doi: 10.1080/00218464.2026.2621198.'
mla: Hofmann, Julia, et al. “Method Development for the Mechanical Characterisation
of Cathodic Electrodeposition Coatings for Numerical Simulation of Bonded Joints.”
The Journal of Adhesion, Informa UK Limited, 2026, pp. 1–16, doi:10.1080/00218464.2026.2621198.
short: J. Hofmann, D. Teutenberg, G. Meschut, The Journal of Adhesion (2026) 1–16.
date_created: 2026-03-03T08:38:13Z
date_updated: 2026-03-03T08:55:16Z
department:
- _id: '157'
doi: 10.1080/00218464.2026.2621198
language:
- iso: eng
page: 1-16
publication: The Journal of Adhesion
publication_identifier:
issn:
- 0021-8464
- 1545-5823
publication_status: published
publisher: Informa UK Limited
quality_controlled: '1'
status: public
title: Method development for the mechanical characterisation of cathodic electrodeposition
coatings for numerical simulation of bonded joints
type: journal_article
user_id: '104312'
year: '2026'
...
---
_id: '64916'
abstract:
- lang: eng
text: The joining of dissimilar materials, such as steel and aluminum, entails significant
challenges during thermal curing processes due to differing coefficients of thermal
expansion. This study addresses the formation of “viscous fingering” instabilities
in structural adhesive joints, which are induced by thermally driven relative
displacements during the liquid phase of the adhesive. Using a component-like
specimen “bridge specimen,” the dependency of this phenomenon on process temperature
and structural stiffness (rivet distance) was characterized. Experimental results
reveal that while the relative displacement scales cubically with the free buckling
length, the resulting adhesive area reduction follows an exponential trend, leading
to a loss of effective bond area of up to 79%, which significantly compromises
the joint strength in automotive applications. To predict these process-induced
defects, a thermo-chemo-viscoelastic-viscoplastic adhesive model implemented in
LS-DYNA was applied. The model combines curing kinetics, viscoelastic relaxation,
and pressure-dependent plasticity and features a geometric damage parameter (D)
that captures the adhesive area reduction caused by viscous fingering as an exponential
function of the accumulated normal strain in the liquid phase. This damage parameter,
calibrated on base-specimen level, was transferred to the component geometry.
The simulation demonstrated high predictive accuracy with a maximum deviation
of the adhesive area reduction of 3.1% compared to experimental data. This validates
the model’s capability to predict manufacturing-induced damage in complex hybrid
structures solely based on thermal boundary conditions.
article_type: original
author:
- first_name: Mohamad
full_name: Al Trjman, Mohamad
id: '65415'
last_name: Al Trjman
- first_name: Felix
full_name: Beule, Felix
id: '66192'
last_name: Beule
- first_name: Dominik
full_name: Teutenberg, Dominik
id: '537'
last_name: Teutenberg
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Julia
full_name: Riese, Julia
id: '101499'
last_name: Riese
orcid: 0000-0002-3053-0534
citation:
ama: Al Trjman M, Beule F, Teutenberg D, Meschut G, Riese J. Experimental characterization
and numerical analysis of the influence of the CED coating process on viscous
fingering formation in hybrid-jointed mixed structures. The Journal of Adhesion.
Published online 2026:1-24. doi:10.1080/00218464.2026.2644394
apa: Al Trjman, M., Beule, F., Teutenberg, D., Meschut, G., & Riese, J. (2026).
Experimental characterization and numerical analysis of the influence of the CED
coating process on viscous fingering formation in hybrid-jointed mixed structures.
The Journal of Adhesion, 1–24. https://doi.org/10.1080/00218464.2026.2644394
bibtex: '@article{Al Trjman_Beule_Teutenberg_Meschut_Riese_2026, title={Experimental
characterization and numerical analysis of the influence of the CED coating process
on viscous fingering formation in hybrid-jointed mixed structures}, DOI={10.1080/00218464.2026.2644394},
journal={The Journal of Adhesion}, publisher={Informa UK Limited}, author={Al
Trjman, Mohamad and Beule, Felix and Teutenberg, Dominik and Meschut, Gerson and
Riese, Julia}, year={2026}, pages={1–24} }'
chicago: Al Trjman, Mohamad, Felix Beule, Dominik Teutenberg, Gerson Meschut, and
Julia Riese. “Experimental Characterization and Numerical Analysis of the Influence
of the CED Coating Process on Viscous Fingering Formation in Hybrid-Jointed Mixed
Structures.” The Journal of Adhesion, 2026, 1–24. https://doi.org/10.1080/00218464.2026.2644394.
ieee: 'M. Al Trjman, F. Beule, D. Teutenberg, G. Meschut, and J. Riese, “Experimental
characterization and numerical analysis of the influence of the CED coating process
on viscous fingering formation in hybrid-jointed mixed structures,” The Journal
of Adhesion, pp. 1–24, 2026, doi: 10.1080/00218464.2026.2644394.'
mla: Al Trjman, Mohamad, et al. “Experimental Characterization and Numerical Analysis
of the Influence of the CED Coating Process on Viscous Fingering Formation in
Hybrid-Jointed Mixed Structures.” The Journal of Adhesion, Informa UK Limited,
2026, pp. 1–24, doi:10.1080/00218464.2026.2644394.
short: M. Al Trjman, F. Beule, D. Teutenberg, G. Meschut, J. Riese, The Journal
of Adhesion (2026) 1–24.
date_created: 2026-03-14T18:43:41Z
date_updated: 2026-03-14T19:04:46Z
ddc:
- '620'
- '670'
- '660'
department:
- _id: '9'
doi: 10.1080/00218464.2026.2644394
file:
- access_level: closed
content_type: application/pdf
creator: mohamada
date_created: 2026-03-14T18:50:31Z
date_updated: 2026-03-14T18:50:31Z
file_id: '64917'
file_name: Experimental characterization and numerical analysis of the influence
of the CED coating process on viscous fingering formation in hybrid-jointed mixe.pdf
file_size: 14668789
relation: main_file
success: 1
file_date_updated: 2026-03-14T18:50:31Z
has_accepted_license: '1'
keyword:
- Adhesive area reduction
- CED coating process
- delta alpha problem
- epoxy structural adhesive
- influence of manufacture
- multi-material design
- numerical simulation (FEM)
- relative displacements
- viscous fingering (saffman-taylor-instability).
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
page: 1-24
publication: The Journal of Adhesion
publication_identifier:
issn:
- 0021-8464
- 1545-5823
publication_status: published
publisher: Informa UK Limited
status: public
title: Experimental characterization and numerical analysis of the influence of the
CED coating process on viscous fingering formation in hybrid-jointed mixed structures
type: journal_article
user_id: '65415'
year: '2026'
...
---
_id: '64985'
abstract:
- lang: eng
text: Modern industrial development has necessitated a wide range of joining technologies.
Self-pierce riveting has become a prevalent technique for sheet metal assembly,
especially in automotive applications. Achieving proper joint geometry and adequate
load-bearing capacity depends on appropriate tool selection and precise process
control. Material properties and condition also play a significant role in process
performance. To accommodate the inevitable variations in component characteristics
during production, a robust and stable joining process is essential. The study
focuses on investigating the influence of preformed joining partners on the joining
process and the joint's load capacity. An EN AW-6014 in T4 condition, as well
as an HCT590X, are used as materials for this study. For this purpose, an exemplary
process chain consisting of the steps of performing, joining, and shear load testing
is studied. Each process step is implemented using an FE model to predict the
outcome of subsequent steps. For analysis of the influence of pre-strain, an optimisation
software is used to plan and execute variations of the process. These variations
are used to create a meta-model that can describe the relationships between pre-forming
and characteristic parameters of subsequent process steps. The resulting model
is validated by comparing simulation and experimental data. Finally, in a novel
approach, the robustness of the presented process chain is analyzed in terms of
a tolerable performance level for the joining partners.
article_number: '100391'
author:
- first_name: Jean-Patrick
full_name: Ludwig, Jean-Patrick
id: '76631'
last_name: Ludwig
- first_name: Emil
full_name: Tolke, Emil
last_name: Tolke
- first_name: Malte Christian
full_name: Schlichter, Malte Christian
id: '61977'
last_name: Schlichter
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: Ludwig J-P, Tolke E, Schlichter MC, Bobbert M, Meschut G. Numerical analysis
of the robustness of self-pierce riveting with pre-formed joining partners. Journal
of Advanced Joining Processes. 2026;13. doi:10.1016/j.jajp.2026.100391
apa: Ludwig, J.-P., Tolke, E., Schlichter, M. C., Bobbert, M., & Meschut, G.
(2026). Numerical analysis of the robustness of self-pierce riveting with pre-formed
joining partners. Journal of Advanced Joining Processes, 13, Article
100391. https://doi.org/10.1016/j.jajp.2026.100391
bibtex: '@article{Ludwig_Tolke_Schlichter_Bobbert_Meschut_2026, title={Numerical
analysis of the robustness of self-pierce riveting with pre-formed joining partners},
volume={13}, DOI={10.1016/j.jajp.2026.100391},
number={100391}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier
BV}, author={Ludwig, Jean-Patrick and Tolke, Emil and Schlichter, Malte Christian
and Bobbert, Mathias and Meschut, Gerson}, year={2026} }'
chicago: Ludwig, Jean-Patrick, Emil Tolke, Malte Christian Schlichter, Mathias Bobbert,
and Gerson Meschut. “Numerical Analysis of the Robustness of Self-Pierce Riveting
with Pre-Formed Joining Partners.” Journal of Advanced Joining Processes
13 (2026). https://doi.org/10.1016/j.jajp.2026.100391.
ieee: 'J.-P. Ludwig, E. Tolke, M. C. Schlichter, M. Bobbert, and G. Meschut, “Numerical
analysis of the robustness of self-pierce riveting with pre-formed joining partners,”
Journal of Advanced Joining Processes, vol. 13, Art. no. 100391, 2026,
doi: 10.1016/j.jajp.2026.100391.'
mla: Ludwig, Jean-Patrick, et al. “Numerical Analysis of the Robustness of Self-Pierce
Riveting with Pre-Formed Joining Partners.” Journal of Advanced Joining Processes,
vol. 13, 100391, Elsevier BV, 2026, doi:10.1016/j.jajp.2026.100391.
short: J.-P. Ludwig, E. Tolke, M.C. Schlichter, M. Bobbert, G. Meschut, Journal
of Advanced Joining Processes 13 (2026).
date_created: 2026-03-16T12:30:39Z
date_updated: 2026-03-16T12:38:13Z
department:
- _id: '9'
doi: 10.1016/j.jajp.2026.100391
intvolume: ' 13'
keyword:
- Self-pierce riveting
- FE modelling
- Plastic pre-deformation
- Meta modelling
language:
- iso: eng
project:
- _id: '131'
name: TRR 285 - Project Area A
- _id: '135'
name: TRR 285 - Subproject A01
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: Journal of Advanced Joining Processes
publication_identifier:
issn:
- 2666-3309
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: Numerical analysis of the robustness of self-pierce riveting with pre-formed
joining partners
type: journal_article
user_id: '76631'
volume: 13
year: '2026'
...
---
_id: '64997'
author:
- first_name: Dorte
full_name: Trienens, Dorte
id: '44116'
last_name: Trienens
- first_name: Florian
full_name: Brüning, Florian
id: '72920'
last_name: Brüning
- first_name: Volker
full_name: Schöppner, Volker
id: '20530'
last_name: Schöppner
citation:
ama: Trienens D, Brüning F, Schöppner V. Wo Forschung, KI und Praxis aufeinandertreffen.
kunststoffland NRW report. 2026;(03-2025):24–25.
apa: Trienens, D., Brüning, F., & Schöppner, V. (2026). Wo Forschung, KI und
Praxis aufeinandertreffen. kunststoffland NRW report, 03–2025, 24–25.
bibtex: '@article{Trienens_Brüning_Schöppner_2026, title={Wo Forschung, KI und Praxis
aufeinandertreffen}, number={03–2025}, journal={kunststoffland NRW report}, author={Trienens,
Dorte and Brüning, Florian and Schöppner, Volker}, year={2026}, pages={24–25}
}'
chicago: 'Trienens, Dorte, Florian Brüning, and Volker Schöppner. “Wo Forschung,
KI und Praxis aufeinandertreffen.” kunststoffland NRW report, no. 03–2025
(2026): 24–25.'
ieee: D. Trienens, F. Brüning, and V. Schöppner, “Wo Forschung, KI und Praxis aufeinandertreffen,”
kunststoffland NRW report, no. 03–2025, pp. 24–25, 2026.
mla: Trienens, Dorte, et al. “Wo Forschung, KI und Praxis aufeinandertreffen.” kunststoffland
NRW report, no. 03–2025, 2026, pp. 24–25.
short: D. Trienens, F. Brüning, V. Schöppner, kunststoffland NRW report (2026) 24–25.
date_created: 2026-03-16T14:23:33Z
date_updated: 2026-03-18T09:24:12Z
department:
- _id: '9'
- _id: '367'
issue: 03-2025
keyword:
- extrusion
- KI
- Simulation
language:
- iso: ger
page: 24–25
publication: kunststoffland NRW report
status: public
title: Wo Forschung, KI und Praxis aufeinandertreffen
type: journal_article
user_id: '59363'
year: '2026'
...
---
_id: '65108'
abstract:
- lang: eng
text: "Abstract\r\n Lithographic
surface patterning is a cornerstone of modern materials and device fabrication.
Although the available lithography techniques are constantly being advanced to
push the feature sizes down to the few-nanometer scale, such developments are
associated with many technological and economic challenges. Combining established
top-down lithography with bottom-up self-assembly strategies has the potential
to overcome those challenges and enable the manipulation of matter with molecular
precision. One of the most exciting approaches in this regard is to harness the
programmability of DNA self-assembly to create precise DNA nanostructure masks
to be used in the lithographic patterning of diverse substrates. DNA nanotechnology
has provided us with a versatile toolbox for the high-yield synthesis of 2D and
3D nanostructures with complex, user-defined shapes at unprecedented molecular
accuracy. Consequently, the last decade has seen intense research efforts aimed
at transferring such DNA nanostructure shapes into functional organic and inorganic
materials and we have now arrived at a point where sophisticated molecular lithography
approaches utilize DNA nanostructure masks for the fabrication of plasmonic surfaces
for metamaterials and sensing applications. This review summarizes how the spatial
information of such DNA nanostructure masks can be transferred into various organic
and inorganic materials through selective etching and deposition steps. The review
also discusses recent developments toward all-purpose molecular lithography schemes
and highlights promising extensions of the discussed methods toward new materials
systems and application fields."
author:
- first_name: Adrian Clemens
full_name: Keller, Adrian Clemens
id: '48864'
last_name: Keller
orcid: 0000-0001-7139-3110
- first_name: Veikko
full_name: Linko, Veikko
last_name: Linko
citation:
ama: 'Keller AC, Linko V. Molecular lithography with DNA nanostructures: Methods
and applications. Journal of Physics D: Applied Physics. Published online
2026. doi:10.1088/1361-6463/ae5667'
apa: 'Keller, A. C., & Linko, V. (2026). Molecular lithography with DNA nanostructures:
Methods and applications. Journal of Physics D: Applied Physics. https://doi.org/10.1088/1361-6463/ae5667'
bibtex: '@article{Keller_Linko_2026, title={Molecular lithography with DNA nanostructures:
Methods and applications}, DOI={10.1088/1361-6463/ae5667},
journal={Journal of Physics D: Applied Physics}, publisher={IOP Publishing}, author={Keller,
Adrian Clemens and Linko, Veikko}, year={2026} }'
chicago: 'Keller, Adrian Clemens, and Veikko Linko. “Molecular Lithography with
DNA Nanostructures: Methods and Applications.” Journal of Physics D: Applied
Physics, 2026. https://doi.org/10.1088/1361-6463/ae5667.'
ieee: 'A. C. Keller and V. Linko, “Molecular lithography with DNA nanostructures:
Methods and applications,” Journal of Physics D: Applied Physics, 2026,
doi: 10.1088/1361-6463/ae5667.'
mla: 'Keller, Adrian Clemens, and Veikko Linko. “Molecular Lithography with DNA
Nanostructures: Methods and Applications.” Journal of Physics D: Applied Physics,
IOP Publishing, 2026, doi:10.1088/1361-6463/ae5667.'
short: 'A.C. Keller, V. Linko, Journal of Physics D: Applied Physics (2026).'
date_created: 2026-03-25T07:43:24Z
date_updated: 2026-03-25T07:44:52Z
department:
- _id: '302'
doi: 10.1088/1361-6463/ae5667
language:
- iso: eng
publication: 'Journal of Physics D: Applied Physics'
publication_identifier:
issn:
- 0022-3727
- 1361-6463
publication_status: published
publisher: IOP Publishing
status: public
title: 'Molecular lithography with DNA nanostructures: Methods and applications'
type: journal_article
user_id: '48864'
year: '2026'
...
---
_id: '64581'
author:
- first_name: Karin
full_name: Binder, Karin
id: '83381'
last_name: Binder
- first_name: Stephan
full_name: Schnaitmann, Stephan
last_name: Schnaitmann
- first_name: Tim
full_name: Erickson, Tim
last_name: Erickson
citation:
ama: 'Binder K, Schnaitmann S, Erickson T. Effects of a simulation-based training
on students conceptual understanding of the Binomial test. In: Birk L, Loth G,
Jotzo L, Binder K, Frischemeier D, eds. Proceedings of the IASE 2025 Satellite
Conference - Statistics and Data Science Education in STEAM. International
Association for Statistics Education; 2026. doi:10.52041/iase25.106'
apa: Binder, K., Schnaitmann, S., & Erickson, T. (2026). Effects of a simulation-based
training on students conceptual understanding of the Binomial test. In L. Birk,
G. Loth, L. Jotzo, K. Binder, & D. Frischemeier (Eds.), Proceedings of
the IASE 2025 Satellite Conference - Statistics and Data Science Education in
STEAM. International Association for Statistics Education. https://doi.org/10.52041/iase25.106
bibtex: '@inproceedings{Binder_Schnaitmann_Erickson_2026, title={Effects of a simulation-based
training on students conceptual understanding of the Binomial test}, DOI={10.52041/iase25.106},
booktitle={Proceedings of the IASE 2025 Satellite Conference - Statistics and
Data Science Education in STEAM}, publisher={International Association for Statistics
Education}, author={Binder, Karin and Schnaitmann, Stephan and Erickson, Tim},
editor={Birk, Lisa and Loth, Gerrit and Jotzo, Luca and Binder, Karin and Frischemeier,
Daniel}, year={2026} }'
chicago: Binder, Karin, Stephan Schnaitmann, and Tim Erickson. “Effects of a Simulation-Based
Training on Students Conceptual Understanding of the Binomial Test.” In Proceedings
of the IASE 2025 Satellite Conference - Statistics and Data Science Education
in STEAM, edited by Lisa Birk, Gerrit Loth, Luca Jotzo, Karin Binder, and
Daniel Frischemeier. International Association for Statistics Education, 2026.
https://doi.org/10.52041/iase25.106.
ieee: 'K. Binder, S. Schnaitmann, and T. Erickson, “Effects of a simulation-based
training on students conceptual understanding of the Binomial test,” in Proceedings
of the IASE 2025 Satellite Conference - Statistics and Data Science Education
in STEAM, 2026, doi: 10.52041/iase25.106.'
mla: Binder, Karin, et al. “Effects of a Simulation-Based Training on Students Conceptual
Understanding of the Binomial Test.” Proceedings of the IASE 2025 Satellite
Conference - Statistics and Data Science Education in STEAM, edited by Lisa
Birk et al., International Association for Statistics Education, 2026, doi:10.52041/iase25.106.
short: 'K. Binder, S. Schnaitmann, T. Erickson, in: L. Birk, G. Loth, L. Jotzo,
K. Binder, D. Frischemeier (Eds.), Proceedings of the IASE 2025 Satellite Conference
- Statistics and Data Science Education in STEAM, International Association for
Statistics Education, 2026.'
date_created: 2026-02-21T15:10:45Z
date_updated: 2026-04-20T16:25:06Z
ddc:
- '370'
doi: 10.52041/iase25.106
editor:
- first_name: Lisa
full_name: Birk, Lisa
last_name: Birk
- first_name: Gerrit
full_name: Loth, Gerrit
last_name: Loth
- first_name: Luca
full_name: Jotzo, Luca
last_name: Jotzo
- first_name: Karin
full_name: Binder, Karin
last_name: Binder
- first_name: Daniel
full_name: Frischemeier, Daniel
last_name: Frischemeier
file:
- access_level: closed
content_type: application/pdf
creator: binder
date_created: 2026-04-20T16:24:49Z
date_updated: 2026-04-20T16:24:49Z
file_id: '65470'
file_name: Binder Schnaitmann Erickson 2026 Effects of a simulation-based training
on students conceptual understanding of the Binomial test.pdf
file_size: 1069410
relation: main_file
success: 1
file_date_updated: 2026-04-20T16:24:49Z
has_accepted_license: '1'
language:
- iso: eng
publication: Proceedings of the IASE 2025 Satellite Conference - Statistics and Data
Science Education in STEAM
publication_status: published
publisher: International Association for Statistics Education
status: public
title: Effects of a simulation-based training on students conceptual understanding
of the Binomial test
type: conference
user_id: '83381'
year: '2026'
...
---
_id: '65488'
article_number: '100402'
author:
- first_name: Julia
full_name: Mergheim, Julia
last_name: Mergheim
- first_name: Thomas
full_name: Wallmersperger, Thomas
last_name: Wallmersperger
- first_name: Eugen
full_name: Wolf, Eugen
last_name: Wolf
- first_name: Malte
full_name: Schlichter, Malte
last_name: Schlichter
- first_name: Jean-Patrick
full_name: Ludwig, Jean-Patrick
last_name: Ludwig
- first_name: Johannes
full_name: Friedlein, Johannes
last_name: Friedlein
- first_name: Johannes
full_name: Gerritzen, Johannes
last_name: Gerritzen
- first_name: Deekshith Reddy
full_name: Devulapally, Deekshith Reddy
id: '76837'
last_name: Devulapally
- first_name: Chin
full_name: Chen, Chin
last_name: Chen
- first_name: Deborah
full_name: Weiss, Deborah
last_name: Weiss
- first_name: Sven
full_name: Krome, Sven
last_name: Krome
- first_name: Gregor
full_name: Reschke, Gregor
last_name: Reschke
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
citation:
ama: 'Mergheim J, Wallmersperger T, Wolf E, et al. Simulation-based process chain
for aluminum clinched joints: Predicting geometry, strength, and failure behavior.
Journal of Advanced Joining Processes. Published online 2026. doi:10.1016/j.jajp.2026.100402'
apa: 'Mergheim, J., Wallmersperger, T., Wolf, E., Schlichter, M., Ludwig, J.-P.,
Friedlein, J., Gerritzen, J., Devulapally, D. R., Chen, C., Weiss, D., Krome,
S., Reschke, G., & Gude, M. (2026). Simulation-based process chain for aluminum
clinched joints: Predicting geometry, strength, and failure behavior. Journal
of Advanced Joining Processes, Article 100402. https://doi.org/10.1016/j.jajp.2026.100402'
bibtex: '@article{Mergheim_Wallmersperger_Wolf_Schlichter_Ludwig_Friedlein_Gerritzen_Devulapally_Chen_Weiss_et
al._2026, title={Simulation-based process chain for aluminum clinched joints:
Predicting geometry, strength, and failure behavior}, DOI={10.1016/j.jajp.2026.100402},
number={100402}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier
BV}, author={Mergheim, Julia and Wallmersperger, Thomas and Wolf, Eugen and Schlichter,
Malte and Ludwig, Jean-Patrick and Friedlein, Johannes and Gerritzen, Johannes
and Devulapally, Deekshith Reddy and Chen, Chin and Weiss, Deborah and et al.},
year={2026} }'
chicago: 'Mergheim, Julia, Thomas Wallmersperger, Eugen Wolf, Malte Schlichter,
Jean-Patrick Ludwig, Johannes Friedlein, Johannes Gerritzen, et al. “Simulation-Based
Process Chain for Aluminum Clinched Joints: Predicting Geometry, Strength, and
Failure Behavior.” Journal of Advanced Joining Processes, 2026. https://doi.org/10.1016/j.jajp.2026.100402.'
ieee: 'J. Mergheim et al., “Simulation-based process chain for aluminum clinched
joints: Predicting geometry, strength, and failure behavior,” Journal of Advanced
Joining Processes, Art. no. 100402, 2026, doi: 10.1016/j.jajp.2026.100402.'
mla: 'Mergheim, Julia, et al. “Simulation-Based Process Chain for Aluminum Clinched
Joints: Predicting Geometry, Strength, and Failure Behavior.” Journal of Advanced
Joining Processes, 100402, Elsevier BV, 2026, doi:10.1016/j.jajp.2026.100402.'
short: J. Mergheim, T. Wallmersperger, E. Wolf, M. Schlichter, J.-P. Ludwig, J.
Friedlein, J. Gerritzen, D.R. Devulapally, C. Chen, D. Weiss, S. Krome, G. Reschke,
M. Gude, Journal of Advanced Joining Processes (2026).
date_created: 2026-04-22T10:23:12Z
date_updated: 2026-04-22T10:26:11Z
department:
- _id: '149'
- _id: '321'
- _id: '9'
doi: 10.1016/j.jajp.2026.100402
language:
- iso: eng
project:
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '140'
name: TRR 285 - Subproject B01
publication: Journal of Advanced Joining Processes
publication_identifier:
issn:
- 2666-3309
publication_status: published
publisher: Elsevier BV
status: public
title: 'Simulation-based process chain for aluminum clinched joints: Predicting geometry,
strength, and failure behavior'
type: journal_article
user_id: '76837'
year: '2026'
...
---
_id: '65491'
abstract:
- lang: eng
text: "Abstract\r\n The micropolar
continuum is a special case of a micromorphic material model and has additional
degrees of freedom in the form of microrotations compared to the classical continuum.
With the micropolar model, size effects can be considered and the boundary value
problem can be regularized when localization effects occur. In order to map the
microrotations, an additional strain measure and an additional stress are introduced.
For simulation of plasticity, it is possible to define one yield function, and
thus one plastic multiplier as well as one equivalent plastic strain occur. This
approach is known as the single-surface plasticity approach. The macro- and micro-stresses
are coupled in a common flow function. On the other hand, there is the so-called
double-surface plasticity when one yield function, one plastic multiplier, and
one equivalent plastic strain, respectively, are introduced for each of the macro-
and micro-variables. The coupling of the macro- and micro-variables is established
by a possible coupling of both yield functions. The purpose of this paper is to
compare both approaches and to identify similarities and differences."
article_number: '94'
author:
- first_name: Alexander
full_name: Börger, Alexander
id: '52037'
last_name: Börger
- first_name: Rolf
full_name: Mahnken, Rolf
last_name: Mahnken
citation:
ama: Börger A, Mahnken R. Single-surface and double-surface plasticity for micropolar
continuum. Archive of Applied Mechanics. 2026;96(5). doi:10.1007/s00419-026-03049-w
apa: Börger, A., & Mahnken, R. (2026). Single-surface and double-surface plasticity
for micropolar continuum. Archive of Applied Mechanics, 96(5), Article
94. https://doi.org/10.1007/s00419-026-03049-w
bibtex: '@article{Börger_Mahnken_2026, title={Single-surface and double-surface
plasticity for micropolar continuum}, volume={96}, DOI={10.1007/s00419-026-03049-w},
number={594}, journal={Archive of Applied Mechanics}, publisher={Springer Science
and Business Media LLC}, author={Börger, Alexander and Mahnken, Rolf}, year={2026}
}'
chicago: Börger, Alexander, and Rolf Mahnken. “Single-Surface and Double-Surface
Plasticity for Micropolar Continuum.” Archive of Applied Mechanics 96,
no. 5 (2026). https://doi.org/10.1007/s00419-026-03049-w.
ieee: 'A. Börger and R. Mahnken, “Single-surface and double-surface plasticity for
micropolar continuum,” Archive of Applied Mechanics, vol. 96, no. 5, Art.
no. 94, 2026, doi: 10.1007/s00419-026-03049-w.'
mla: Börger, Alexander, and Rolf Mahnken. “Single-Surface and Double-Surface Plasticity
for Micropolar Continuum.” Archive of Applied Mechanics, vol. 96, no. 5,
94, Springer Science and Business Media LLC, 2026, doi:10.1007/s00419-026-03049-w.
short: A. Börger, R. Mahnken, Archive of Applied Mechanics 96 (2026).
date_created: 2026-04-23T11:55:35Z
date_updated: 2026-04-23T11:56:38Z
department:
- _id: '9'
- _id: '952'
- _id: '321'
doi: 10.1007/s00419-026-03049-w
intvolume: ' 96'
issue: '5'
language:
- iso: eng
publication: Archive of Applied Mechanics
publication_identifier:
issn:
- 0939-1533
- 1432-0681
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: Single-surface and double-surface plasticity for micropolar continuum
type: journal_article
user_id: '85414'
volume: 96
year: '2026'
...