---
res:
  bibo_abstract:
  - A coupled finite plasticity ductile damage and failure model is proposed for the
    finite element simulation of clinch joining, which incorporates stress-state dependency
    and regularisation by gradient-enhancement of the damage variable. Ductile damage
    is determined based on a failure indicator governed by a failure surface in stress
    space. The latter is exemplary chosen as a combination of the Hosford–Coulomb
    and Cockcroft–Latham–Oh failure criteria for the high and low stress triaxiality
    range, respectively, to cover the wide stress range encountered in forming. Damage
    is coupled to elasto-plasticity to capture the damage-induced degradation of the
    stiffness and flow stress. This affects the material behaviour up to failure,
    thereby realistically altering the stress state. Consequently, especially for
    highly ductile materials, where substantial necking and localisation precede material
    fracture, the failure prediction is enhanced. The resulting stress softening is
    regularised by gradient-enhancement to obtain mesh-objective results. The analysis
    of a modified punch test experiment emphasises how the damage-induced softening
    effect can strongly alter the actual stress state towards failure. Moreover, the
    impact of successful regularisation is shown, and the applicability of the damage
    and failure model to clinch joining is proven.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Johannes
      foaf_name: Friedlein, Johannes
      foaf_surname: Friedlein
  - foaf_Person:
      foaf_givenName: Julia
      foaf_name: Mergheim, Julia
      foaf_surname: Mergheim
  - foaf_Person:
      foaf_givenName: Paul
      foaf_name: Steinmann, Paul
      foaf_surname: Steinmann
  bibo_doi: 10.1016/j.jmps.2025.106026
  bibo_volume: 196
  dct_date: 2025^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0022-5096
  dct_language: eng
  dct_publisher: Elsevier BV@
  dct_subject:
  - Finite plasticity
  - Ductile damage
  - Gradient-enhancement
  - Stress-state dependency
  - Failure
  dct_title: Modelling of stress-state-dependent ductile damage with gradient-enhancement
    exemplified for clinch joining@
...