---
_id: '24009'
abstract:
- lang: eng
  text: <jats:p>Heat-assisted forming processes are becoming increasingly important
    in the manufacturing of sheet metal parts for body-in-white applications. However,
    the non-isothermal nature of these processes leads to challenges in evaluating
    the forming limits, since established methods such as Forming Limit Curves (FLCs)
    only allow the assessment of critical forming strains for steady temperatures.
    For this reason, a temperature-dependent extension of the well-established GISSMO
    (Generalized Incremental Stress State Dependent Damage Model) fracture indicator
    framework is developed by the authors to predict forming failures under non-isothermal
    conditions. In this paper, a general approach to combine several isothermal FLCs
    within the temperature-extended GISSMO model into a temperature-dependent forming
    limit surface is investigated. The general capabilities of the model are tested
    in a coupled thermo-mechanical FEA using the example of warm forming of an AA5182-O
    sheet metal cross-die cup. The obtained results are then compared with state of
    the art of evaluation methods. By taking the strain and temperature path into
    account, GISSMO predicts greater drawing depths by up to 20% than established
    methods. In this way the forming and so the lightweight potential of sheet metal
    parts can by fully exploited. Moreover, the risk and locus of failure can be evaluated
    directly on the part geometry by a contour plot. An additional advantage of the
    GISSMO model is the applicability for low triaxialities as well as the possibility
    to predict the materials behavior beyond necking up to ductile fracture.</jats:p>
article_number: '5106'
author:
- first_name: Alan Adam
  full_name: Camberg, Alan Adam
  id: '60544'
  last_name: Camberg
- first_name: Tobias
  full_name: Erhart, Tobias
  last_name: Erhart
- first_name: Thomas
  full_name: Tröster, Thomas
  id: '553'
  last_name: Tröster
citation:
  ama: Camberg AA, Erhart T, Tröster T. A Generalized Stress State and Temperature
    Dependent Damage Indicator Framework for Ductile Failure Prediction in Heat-Assisted
    Forming Operations. <i>Materials</i>. Published online 2021. doi:<a href="https://doi.org/10.3390/ma14175106">10.3390/ma14175106</a>
  apa: Camberg, A. A., Erhart, T., &#38; Tröster, T. (2021). A Generalized Stress
    State and Temperature Dependent Damage Indicator Framework for Ductile Failure
    Prediction in Heat-Assisted Forming Operations. <i>Materials</i>, Article 5106.
    <a href="https://doi.org/10.3390/ma14175106">https://doi.org/10.3390/ma14175106</a>
  bibtex: '@article{Camberg_Erhart_Tröster_2021, title={A Generalized Stress State
    and Temperature Dependent Damage Indicator Framework for Ductile Failure Prediction
    in Heat-Assisted Forming Operations}, DOI={<a href="https://doi.org/10.3390/ma14175106">10.3390/ma14175106</a>},
    number={5106}, journal={Materials}, author={Camberg, Alan Adam and Erhart, Tobias
    and Tröster, Thomas}, year={2021} }'
  chicago: Camberg, Alan Adam, Tobias Erhart, and Thomas Tröster. “A Generalized Stress
    State and Temperature Dependent Damage Indicator Framework for Ductile Failure
    Prediction in Heat-Assisted Forming Operations.” <i>Materials</i>, 2021. <a href="https://doi.org/10.3390/ma14175106">https://doi.org/10.3390/ma14175106</a>.
  ieee: 'A. A. Camberg, T. Erhart, and T. Tröster, “A Generalized Stress State and
    Temperature Dependent Damage Indicator Framework for Ductile Failure Prediction
    in Heat-Assisted Forming Operations,” <i>Materials</i>, Art. no. 5106, 2021, doi:
    <a href="https://doi.org/10.3390/ma14175106">10.3390/ma14175106</a>.'
  mla: Camberg, Alan Adam, et al. “A Generalized Stress State and Temperature Dependent
    Damage Indicator Framework for Ductile Failure Prediction in Heat-Assisted Forming
    Operations.” <i>Materials</i>, 5106, 2021, doi:<a href="https://doi.org/10.3390/ma14175106">10.3390/ma14175106</a>.
  short: A.A. Camberg, T. Erhart, T. Tröster, Materials (2021).
date_created: 2021-09-09T10:05:11Z
date_updated: 2023-05-24T08:51:02Z
department:
- _id: '9'
- _id: '149'
- _id: '321'
doi: 10.3390/ma14175106
language:
- iso: eng
publication: Materials
publication_identifier:
  issn:
  - 1996-1944
publication_status: published
status: public
title: A Generalized Stress State and Temperature Dependent Damage Indicator Framework
  for Ductile Failure Prediction in Heat-Assisted Forming Operations
type: journal_article
user_id: '15952'
year: '2021'
...