---
_id: '58491'
abstract:
- lang: eng
  text: <jats:p>Similar to bulk metal forming, clinch joining is characterised by
    large plastic deformations and a variety of different 3D stress states, including
    severe compression. However, inherent to plastic forming is the nucleation and
    growth of defects, whose detrimental effects on the material behaviour can be
    described by continuum damage models and eventually lead to material failure.
    As the damage evolution strongly depends on the stress state, a stress-state-dependent
    model is utilised to correctly track the accumulation. To formulate and parameterise
    this model, besides classical experiments, so-called modified punch tests are
    also integrated herein to enhance the calibration of the failure model by capturing
    a larger range of stress states and metal-forming-specific loading conditions.
    Moreover, when highly ductile materials are considered, such as the dual-phase
    steel HCT590X and the aluminium alloy EN AW-6014 T4 investigated here, strong
    necking and localisation might occur prior to fracture. This can alter the stress
    state and affect the actual strain at failure. This influence is captured by coupling
    plasticity and damage to incorporate the damage-induced softening effect. Its
    relative importance is shown by conducting inverse parameter identifications to
    determine damage and failure parameters for both mentioned ductile metals based
    on up to 12 different experiments.</jats:p>
article_number: '157'
author:
- first_name: Johannes
  full_name: Friedlein, Johannes
  last_name: Friedlein
- first_name: Max
  full_name: Böhnke, Max
  last_name: Böhnke
- first_name: Malte
  full_name: Schlichter, Malte
  last_name: Schlichter
- first_name: Mathias
  full_name: Bobbert, Mathias
  last_name: Bobbert
- first_name: Gerson
  full_name: Meschut, Gerson
  last_name: Meschut
- first_name: Julia
  full_name: Mergheim, Julia
  last_name: Mergheim
- first_name: Paul
  full_name: Steinmann, Paul
  last_name: Steinmann
citation:
  ama: Friedlein J, Böhnke M, Schlichter M, et al. Material Parameter Identification
    for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch
    Joining. <i>Journal of Manufacturing and Materials Processing</i>. 2024;8(4).
    doi:<a href="https://doi.org/10.3390/jmmp8040157">10.3390/jmmp8040157</a>
  apa: Friedlein, J., Böhnke, M., Schlichter, M., Bobbert, M., Meschut, G., Mergheim,
    J., &#38; Steinmann, P. (2024). Material Parameter Identification for a Stress-State-Dependent
    Ductile Damage and Failure Model Applied to Clinch Joining. <i>Journal of Manufacturing
    and Materials Processing</i>, <i>8</i>(4), Article 157. <a href="https://doi.org/10.3390/jmmp8040157">https://doi.org/10.3390/jmmp8040157</a>
  bibtex: '@article{Friedlein_Böhnke_Schlichter_Bobbert_Meschut_Mergheim_Steinmann_2024,
    title={Material Parameter Identification for a Stress-State-Dependent Ductile
    Damage and Failure Model Applied to Clinch Joining}, volume={8}, DOI={<a href="https://doi.org/10.3390/jmmp8040157">10.3390/jmmp8040157</a>},
    number={4157}, journal={Journal of Manufacturing and Materials Processing}, publisher={MDPI
    AG}, author={Friedlein, Johannes and Böhnke, Max and Schlichter, Malte and Bobbert,
    Mathias and Meschut, Gerson and Mergheim, Julia and Steinmann, Paul}, year={2024}
    }'
  chicago: Friedlein, Johannes, Max Böhnke, Malte Schlichter, Mathias Bobbert, Gerson
    Meschut, Julia Mergheim, and Paul Steinmann. “Material Parameter Identification
    for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch
    Joining.” <i>Journal of Manufacturing and Materials Processing</i> 8, no. 4 (2024).
    <a href="https://doi.org/10.3390/jmmp8040157">https://doi.org/10.3390/jmmp8040157</a>.
  ieee: 'J. Friedlein <i>et al.</i>, “Material Parameter Identification for a Stress-State-Dependent
    Ductile Damage and Failure Model Applied to Clinch Joining,” <i>Journal of Manufacturing
    and Materials Processing</i>, vol. 8, no. 4, Art. no. 157, 2024, doi: <a href="https://doi.org/10.3390/jmmp8040157">10.3390/jmmp8040157</a>.'
  mla: Friedlein, Johannes, et al. “Material Parameter Identification for a Stress-State-Dependent
    Ductile Damage and Failure Model Applied to Clinch Joining.” <i>Journal of Manufacturing
    and Materials Processing</i>, vol. 8, no. 4, 157, MDPI AG, 2024, doi:<a href="https://doi.org/10.3390/jmmp8040157">10.3390/jmmp8040157</a>.
  short: J. Friedlein, M. Böhnke, M. Schlichter, M. Bobbert, G. Meschut, J. Mergheim,
    P. Steinmann, Journal of Manufacturing and Materials Processing 8 (2024).
date_created: 2025-01-31T16:59:13Z
date_updated: 2025-01-31T17:03:34Z
doi: 10.3390/jmmp8040157
intvolume: '         8'
issue: '4'
keyword:
- ductile damage
- stress-state dependency
- failure
- parameter identification
- punch test
- clinching
language:
- iso: eng
project:
- _id: '130'
  grant_number: '418701707'
  name: 'TRR 285: TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
    Prozessketten'
- _id: '131'
  name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '139'
  name: 'TRR 285 – A05: TRR 285 - Subproject A05'
publication: Journal of Manufacturing and Materials Processing
publication_identifier:
  issn:
  - 2504-4494
publication_status: published
publisher: MDPI AG
status: public
title: Material Parameter Identification for a Stress-State-Dependent Ductile Damage
  and Failure Model Applied to Clinch Joining
type: journal_article
user_id: '84990'
volume: 8
year: '2024'
...
---
_id: '27186'
abstract:
- lang: eng
  text: 'The presented paper aims to characterize the damage and fracture behavior
    of HX340LAD Micro-Alloyed steels using small punch test. Variations with respect
    to punch geometries and cutting clearance are made to describe the damage behavior
    of the material under different loading conditions. Experimental investigations
    are conducted to identify the crack initiation in the specimens. Furthermore,
    the numerical FEM simulations are performed to identify the stress state at crack
    initiation. It is shown that different stress states from shear to biaxial tension
    can be achieved by changing the geometries of punch and varying the cutting clearance.
    Moreover, it is presented how changing the configurations can influence the stress
    state variables: Triaxiality and lode angle parameter.'
article_type: original
author:
- first_name: Mortaza
  full_name: Otroshi, Mortaza
  id: '71269'
  last_name: Otroshi
  orcid: 0000-0002-8652-9209
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
citation:
  ama: Otroshi M, Meschut G. Influence of cutting clearance and punch geometry on
    the stress state in small punch test . <i>Engineering Failure Analysis</i>. 2022;136(c).
    doi:<a href="https://doi.org/10.1016/j.engfailanal.2022.106183">10.1016/j.engfailanal.2022.106183</a>
  apa: Otroshi, M., &#38; Meschut, G. (2022). Influence of cutting clearance and punch
    geometry on the stress state in small punch test . <i>Engineering Failure Analysis</i>,
    <i>136</i>(c). <a href="https://doi.org/10.1016/j.engfailanal.2022.106183">https://doi.org/10.1016/j.engfailanal.2022.106183</a>
  bibtex: '@article{Otroshi_Meschut_2022, title={Influence of cutting clearance and
    punch geometry on the stress state in small punch test }, volume={136}, DOI={<a
    href="https://doi.org/10.1016/j.engfailanal.2022.106183">10.1016/j.engfailanal.2022.106183</a>},
    number={c}, journal={Engineering Failure Analysis}, publisher={Elsevier}, author={Otroshi,
    Mortaza and Meschut, Gerson}, year={2022} }'
  chicago: Otroshi, Mortaza, and Gerson Meschut. “Influence of Cutting Clearance and
    Punch Geometry on the Stress State in Small Punch Test .” <i>Engineering Failure
    Analysis</i> 136, no. c (2022). <a href="https://doi.org/10.1016/j.engfailanal.2022.106183">https://doi.org/10.1016/j.engfailanal.2022.106183</a>.
  ieee: 'M. Otroshi and G. Meschut, “Influence of cutting clearance and punch geometry
    on the stress state in small punch test ,” <i>Engineering Failure Analysis</i>,
    vol. 136, no. c, 2022, doi: <a href="https://doi.org/10.1016/j.engfailanal.2022.106183">10.1016/j.engfailanal.2022.106183</a>.'
  mla: Otroshi, Mortaza, and Gerson Meschut. “Influence of Cutting Clearance and Punch
    Geometry on the Stress State in Small Punch Test .” <i>Engineering Failure Analysis</i>,
    vol. 136, no. c, Elsevier, 2022, doi:<a href="https://doi.org/10.1016/j.engfailanal.2022.106183">10.1016/j.engfailanal.2022.106183</a>.
  short: M. Otroshi, G. Meschut, Engineering Failure Analysis 136 (2022).
date_created: 2021-11-07T20:34:51Z
date_updated: 2022-04-25T07:48:20Z
department:
- _id: '157'
doi: 10.1016/j.engfailanal.2022.106183
intvolume: '       136'
issue: c
keyword:
- Ductile damage
- stress state
- small punch test
- triaxiality
- lode angle parameter
language:
- iso: eng
publication: Engineering Failure Analysis
publication_identifier:
  issn:
  - 1350-6307
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: 'Influence of cutting clearance and punch geometry on the stress state in small
  punch test '
type: journal_article
user_id: '71269'
volume: 136
year: '2022'
...