---
_id: '59441'
abstract:
- lang: eng
  text: '<jats:p>Abstract. Accurate Finite Element Modeling (FEM) of joints is essential
    in the design of complex mechanical systems such as automotive body-in-white (BIW)
    structures, as it plays a critical role in evaluating their performance. Although
    well-established techniques exist for modeling rotationally symmetric joints,
    there remains a significant gap in effectively modeling non-rotationally symmetric
    joints. These joints are particularly relevant in the automotive BIW, where they
    can better accommodate anisotropic loading conditions. In this study, strategies
    for modeling non-rotationally symmetric joints were explored using finite element
    simulations in LS-DYNA. The findings demonstrate that discrete beam elements can
    capture the anisotropic characteristics of such joints. Two models were tested:
    a single-beam model for stiffness periodicity every 90°, and a three-beam model
    for stiffness periodicity every 120°. Force responses, stress distribution, and
    sheet bending behaviors were analyzed, confirming that discrete beam elements
    can accurately represent direction-dependent stiffness. These results establish
    a foundation for developing advanced joint modeling strategies in complex mechanical
    systems.</jats:p>'
author:
- first_name: Deekshith Reddy
  full_name: Devulapally, Deekshith Reddy
  id: '76837'
  last_name: Devulapally
- first_name: Thomas
  full_name: Tröster, Thomas
  id: '553'
  last_name: Tröster
citation:
  ama: 'Devulapally DR, Tröster T. Modelling strategies for non-rotationally symmetric
    joints. In: <i>Materials Research Proceedings</i>. Vol 52. Materials Research
    Forum LLC; 2025. doi:<a href="https://doi.org/10.21741/9781644903551-21">10.21741/9781644903551-21</a>'
  apa: Devulapally, D. R., &#38; Tröster, T. (2025). Modelling strategies for non-rotationally
    symmetric joints. <i>Materials Research Proceedings</i>, <i>52</i>. <a href="https://doi.org/10.21741/9781644903551-21">https://doi.org/10.21741/9781644903551-21</a>
  bibtex: '@inproceedings{Devulapally_Tröster_2025, title={Modelling strategies for
    non-rotationally symmetric joints}, volume={52}, DOI={<a href="https://doi.org/10.21741/9781644903551-21">10.21741/9781644903551-21</a>},
    booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
    LLC}, author={Devulapally, Deekshith Reddy and Tröster, Thomas}, year={2025} }'
  chicago: Devulapally, Deekshith Reddy, and Thomas Tröster. “Modelling Strategies
    for Non-Rotationally Symmetric Joints.” In <i>Materials Research Proceedings</i>,
    Vol. 52. Materials Research Forum LLC, 2025. <a href="https://doi.org/10.21741/9781644903551-21">https://doi.org/10.21741/9781644903551-21</a>.
  ieee: 'D. R. Devulapally and T. Tröster, “Modelling strategies for non-rotationally
    symmetric joints,” in <i>Materials Research Proceedings</i>, Paderborn, 2025,
    vol. 52, doi: <a href="https://doi.org/10.21741/9781644903551-21">10.21741/9781644903551-21</a>.'
  mla: Devulapally, Deekshith Reddy, and Thomas Tröster. “Modelling Strategies for
    Non-Rotationally Symmetric Joints.” <i>Materials Research Proceedings</i>, vol.
    52, Materials Research Forum LLC, 2025, doi:<a href="https://doi.org/10.21741/9781644903551-21">10.21741/9781644903551-21</a>.
  short: 'D.R. Devulapally, T. Tröster, in: Materials Research Proceedings, Materials
    Research Forum LLC, 2025.'
conference:
  end_date: 2025-04-03
  location: Paderborn
  name: '21st International conference on sheet metal '
  start_date: 2025-04-01
date_created: 2025-04-08T14:57:51Z
date_updated: 2026-02-27T10:50:10Z
department:
- _id: '149'
- _id: '9'
- _id: '321'
doi: 10.21741/9781644903551-21
intvolume: '        52'
language:
- iso: eng
project:
- _id: '140'
  name: 'TRR 285 – B01: TRR 285 - Subproject B01'
- _id: '52'
  name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '130'
  name: 'TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
    Prozessketten'
publication: Materials Research Proceedings
publication_identifier:
  issn:
  - 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
status: public
title: Modelling strategies for non-rotationally symmetric joints
type: conference
user_id: '76837'
volume: 52
year: '2025'
...
---
_id: '59897'
abstract:
- lang: eng
  text: <jats:p>This paper discusses the influence of joint orientation with non-rotationally
    symmetric geometry, on load distribution and structural behavior. The focus is
    on understanding how changes in the alignment of individual joints affect the
    distribution of load, neighboring joints, and the overall performance of the component.
    Lap shear specimens with multiple joints arranged in a line are analyzed to explore
    these effects. Simplified models are used to model the joints in finite element
    simulations, allowing for efficient yet accurate analysis of the load distribution
    and structural response under varying joint orientations. Variations in joint
    orientation result in measurable changes in the distribution of forces on adjacent
    joints, influencing their behavior and that of the overall assembly. Experimental
    validation confirms the numerical results, providing deeper insights into the
    interaction between individual joints and their surroundings. This work contributes
    to the development of systematic approaches for optimizing the design of components
    with non-rotationally symmetric joints. The study highlights the importance of
    considering directional properties of joints in designing structural components.</jats:p>
article_number: '01035'
author:
- first_name: Deekshith Reddy
  full_name: Devulapally, Deekshith Reddy
  id: '76837'
  last_name: Devulapally
- first_name: Christian
  full_name: Steinfelder, Christian
  last_name: Steinfelder
- first_name: Thomas
  full_name: Tröster, Thomas
  id: '553'
  last_name: Tröster
- first_name: Alexander
  full_name: Brosius, Alexander
  last_name: Brosius
citation:
  ama: 'Devulapally DR, Steinfelder C, Tröster T, Brosius A. Impact of non-rotationally
    symmetric joint orientation on neighbouring joints and component performance in
    lap shear specimens. In: <i>MATEC Web of Conferences</i>. Vol 408. EDP Sciences;
    2025. doi:<a href="https://doi.org/10.1051/matecconf/202540801035">10.1051/matecconf/202540801035</a>'
  apa: Devulapally, D. R., Steinfelder, C., Tröster, T., &#38; Brosius, A. (2025).
    Impact of non-rotationally symmetric joint orientation on neighbouring joints
    and component performance in lap shear specimens. <i>MATEC Web of Conferences</i>,
    <i>408</i>, Article 01035. <a href="https://doi.org/10.1051/matecconf/202540801035">https://doi.org/10.1051/matecconf/202540801035</a>
  bibtex: '@inproceedings{Devulapally_Steinfelder_Tröster_Brosius_2025, title={Impact
    of non-rotationally symmetric joint orientation on neighbouring joints and component
    performance in lap shear specimens}, volume={408}, DOI={<a href="https://doi.org/10.1051/matecconf/202540801035">10.1051/matecconf/202540801035</a>},
    number={01035}, booktitle={MATEC Web of Conferences}, publisher={EDP Sciences},
    author={Devulapally, Deekshith Reddy and Steinfelder, Christian and Tröster, Thomas
    and Brosius, Alexander}, year={2025} }'
  chicago: Devulapally, Deekshith Reddy, Christian Steinfelder, Thomas Tröster, and
    Alexander Brosius. “Impact of Non-Rotationally Symmetric Joint Orientation on
    Neighbouring Joints and Component Performance in Lap Shear Specimens.” In <i>MATEC
    Web of Conferences</i>, Vol. 408. EDP Sciences, 2025. <a href="https://doi.org/10.1051/matecconf/202540801035">https://doi.org/10.1051/matecconf/202540801035</a>.
  ieee: 'D. R. Devulapally, C. Steinfelder, T. Tröster, and A. Brosius, “Impact of
    non-rotationally symmetric joint orientation on neighbouring joints and component
    performance in lap shear specimens,” in <i>MATEC Web of Conferences</i>, Lisabon,Portugal,
    2025, vol. 408, doi: <a href="https://doi.org/10.1051/matecconf/202540801035">10.1051/matecconf/202540801035</a>.'
  mla: Devulapally, Deekshith Reddy, et al. “Impact of Non-Rotationally Symmetric
    Joint Orientation on Neighbouring Joints and Component Performance in Lap Shear
    Specimens.” <i>MATEC Web of Conferences</i>, vol. 408, 01035, EDP Sciences, 2025,
    doi:<a href="https://doi.org/10.1051/matecconf/202540801035">10.1051/matecconf/202540801035</a>.
  short: 'D.R. Devulapally, C. Steinfelder, T. Tröster, A. Brosius, in: MATEC Web
    of Conferences, EDP Sciences, 2025.'
conference:
  location: Lisabon,Portugal
  name: 44th Conference of the International Deep Drawing Research Group
date_created: 2025-05-14T11:28:32Z
date_updated: 2026-03-19T10:42:18Z
department:
- _id: '9'
- _id: '321'
- _id: '149'
doi: 10.1051/matecconf/202540801035
intvolume: '       408'
language:
- iso: eng
project:
- _id: '140'
  name: 'TRR 285 – B01: TRR 285 - Subproject B01'
- _id: '130'
  name: 'TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
    Prozessketten'
- _id: '52'
  name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: MATEC Web of Conferences
publication_identifier:
  issn:
  - 2261-236X
publication_status: published
publisher: EDP Sciences
status: public
title: Impact of non-rotationally symmetric joint orientation on neighbouring joints
  and component performance in lap shear specimens
type: conference
user_id: '76837'
volume: 408
year: '2025'
...
---
_id: '55638'
abstract:
- lang: eng
  text: <jats:p>Abstract. Traditionally, joints are cylindrical and rotationally symmetric.
    In the present study, non-rotationally symmetric joints are used for joining steel
    and Glass mat-reinforced thermoplastic sheets (GMT). In addition, the study also
    analyzes the impact of non-rotational symmetric joint rotation on the load-bearing
    capacity. Single lap joint specimens were fabricated using the In-Mold assembly
    technique for joining steel sheets with GMT. Tensile shear tests were performed
    on different orientations of the joint geometry, and it was observed that changing
    the joint orientation influences the load-bearing capacity. The joints are constitutively
    modeled using beam elements and the influence of joint rotation on load distribution
    is examined through a static simulation study. </jats:p>
author:
- first_name: Deekshith Reddy
  full_name: Devulapally, Deekshith Reddy
  id: '76837'
  last_name: Devulapally
- first_name: Sven
  full_name: Martin, Sven
  id: '38177'
  last_name: Martin
- first_name: Thomas
  full_name: Tröster, Thomas
  id: '553'
  last_name: Tröster
citation:
  ama: 'Devulapally DR, Martin S, Tröster T. Non-rotationally symmetric joints – Mechanisms
    and load bearing capacity. In: <i>Materials Research Proceedings</i>. Materials
    Research Forum LLC; 2024. doi:<a href="https://doi.org/10.21741/9781644903131-183">10.21741/9781644903131-183</a>'
  apa: Devulapally, D. R., Martin, S., &#38; Tröster, T. (2024). Non-rotationally
    symmetric joints – Mechanisms and load bearing capacity. <i>Materials Research
    Proceedings</i>. <a href="https://doi.org/10.21741/9781644903131-183">https://doi.org/10.21741/9781644903131-183</a>
  bibtex: '@inproceedings{Devulapally_Martin_Tröster_2024, title={Non-rotationally
    symmetric joints – Mechanisms and load bearing capacity}, DOI={<a href="https://doi.org/10.21741/9781644903131-183">10.21741/9781644903131-183</a>},
    booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
    LLC}, author={Devulapally, Deekshith Reddy and Martin, Sven and Tröster, Thomas},
    year={2024} }'
  chicago: Devulapally, Deekshith Reddy, Sven Martin, and Thomas Tröster. “Non-Rotationally
    Symmetric Joints – Mechanisms and Load Bearing Capacity.” In <i>Materials Research
    Proceedings</i>. Materials Research Forum LLC, 2024. <a href="https://doi.org/10.21741/9781644903131-183">https://doi.org/10.21741/9781644903131-183</a>.
  ieee: 'D. R. Devulapally, S. Martin, and T. Tröster, “Non-rotationally symmetric
    joints – Mechanisms and load bearing capacity,” 2024, doi: <a href="https://doi.org/10.21741/9781644903131-183">10.21741/9781644903131-183</a>.'
  mla: Devulapally, Deekshith Reddy, et al. “Non-Rotationally Symmetric Joints – Mechanisms
    and Load Bearing Capacity.” <i>Materials Research Proceedings</i>, Materials Research
    Forum LLC, 2024, doi:<a href="https://doi.org/10.21741/9781644903131-183">10.21741/9781644903131-183</a>.
  short: 'D.R. Devulapally, S. Martin, T. Tröster, in: Materials Research Proceedings,
    Materials Research Forum LLC, 2024.'
date_created: 2024-08-19T08:29:22Z
date_updated: 2026-02-27T10:50:30Z
department:
- _id: '149'
- _id: '321'
- _id: '9'
doi: 10.21741/9781644903131-183
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
project:
- _id: '140'
  name: 'TRR 285 – B01: TRR 285 - Subproject B01'
- _id: '52'
  name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '130'
  name: 'TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
    Prozessketten'
publication: Materials Research Proceedings
publication_identifier:
  issn:
  - 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
status: public
title: Non-rotationally symmetric joints – Mechanisms and load bearing capacity
type: conference
user_id: '76837'
year: '2024'
...