Modeling of microstructural pattern formation in crystal plasticity

Publikation: Beiträge in SammelwerkenAbstracts in KonferenzbändenForschungbegutachtet

Authors

The mechanical behavior of most materials is dictated by a present or emergent underlying microstructure which is a direct result of different, even competing physical mechanisms occurring at lower length scales. In this work, energetic microstructure interaction via different non-convex contributions to the free energy in metals is modeled. For this purpose rate dependent gradient extended crystal plasticity models at the glide-system level are formulated. The non-convex energy serves as the driving force for the emergent microstructure. The competition between the kinetics and the relaxation of the free energy is an essential feature of the model. Non-convexity naturally arises in finite-deformation single-slip crystal plasticity and the results of the gradient model are compared with an effective laminate model based on energy relaxation. Both models predict the formation of first-order laminates. Algorithmic and numerical aspects will be discussed and compared.
OriginalspracheEnglisch
TitelBook of Abstract of the Joint Annual Meeting of GAMM and DMV
HerausgeberGesellschaft für angewandte Mathematik und Mechanik e.V
Anzahl der Seiten1
VerlagTechnische Universität Braunschweig
Erscheinungsdatum2016
Seiten621
PublikationsstatusErschienen - 2016
VeranstaltungJoint DMV and GAMM Annual Meeting - DMV & GAMM 2016 - TU Braunschweig, Braunschweig, Deutschland
Dauer: 07.03.201611.03.2016
https://jahrestagung.gamm-ev.de/index.php/2016/joint-dmv-and-gamm-annual-meeting

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