---
res:
  bibo_abstract:
  - <jats:title>Abstract</jats:title><jats:p>Stretching of polycarbonate films leads
    to the formation of shear bands in the necking zone [1]. Standard viscoplastic
    material models render mesh size dependent results, which requires a mathematical
    regularization. To this end, we present a finite strain gradient theory for a
    viscoplastic, isotropic material model where we extend the model presented in
    [2] to a micromorphic model by introducing a new micromorphic variable as an additional
    degree of freedom with its first gradient [3, 4]. The variable here has the meaning
    of a micro plastic strain, and is coupled with the macro plastic by a micro penalty
    term, forcing the macro‐plastic strain to be close to the micro‐plastic strain
    for the targeted shear band regularization effect. We have implemented the model
    equations as a three dimensional initial boundary value problem in an in house
    FE‐tool, to simulate different geometries with different thickness and to compare
    it the experimental tests. The analysis is performed for a uniaxial tensile geometry
    as well as for a biaxial tensile geometry. The numerical examples show the ability
    of the model to regularize the shear bands and solve the problem of localization.</jats:p>@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Ayoub
      foaf_name: Hamdoun, Ayoub
      foaf_surname: Hamdoun
      foaf_workInfoHomepage: http://www.librecat.org/personId=57708
  - foaf_Person:
      foaf_givenName: Rolf
      foaf_name: Mahnken, Rolf
      foaf_surname: Mahnken
      foaf_workInfoHomepage: http://www.librecat.org/personId=335
  bibo_doi: 10.1002/pamm.202200074
  bibo_issue: '1'
  bibo_volume: 22
  dct_date: 2023^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/1617-7061
  - http://id.crossref.org/issn/1617-7061
  dct_language: eng
  dct_publisher: Wiley@
  dct_title: A finite strain gradient theory for viscoplasticity by means of micromorphic
    regularization@
...