Reference : Phase field fracture model for viscoplastic materials in large deformations
Scientific congresses, symposiums and conference proceedings : Unpublished conference
Engineering, computing & technology : Materials science & engineering
Computational Sciences
http://hdl.handle.net/10993/39735
Phase field fracture model for viscoplastic materials in large deformations
English
Kabore, Brice Wendlassida mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Loew, Pascal Juergen mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > >]
Peters, Bernhard mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
13-Jun-2019
No
Conference on Computational Modeling of Fracture and Failure of Materials and Structures (CFRAC 2019)
12-06-2019 to 14-06-2019
[en] Phase-field fracture ; viscoplasticity ; large deformations
[en] Phase-field modeling approach to material fracture and damage has received a growing interest among researchers. It has proven to be an effective way to address crack related discontinuities in continuum mechanics. Also, it solves the problem related to tracking the fracture surface by simply representing the fracture phase with a continuous field variable. Recently, phase-field fracture models have been extended to finite deformations, crack nucleation and applied to complex material behaviors such as plasticity and viscoplasticity. In this contribution we describe a viscoplastic model coupled with a phase-field dynamic fracture model in a large strain formulation. The model include damage, history, rate and temperature dependent behavior. A finite element implementation is presented in a staggered time integration. Moreover, we address the crack closure and crack surfaces interpenetration taking into account tension-compression strength asymmetry. Performance of the model on dynamic crack propagation are presented.
http://hdl.handle.net/10993/39735

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