Presentation Details
Variational constitutive updates based on hyper-dual numbers - theory of gradient enhanced thermoplasticity
Friday, 13 Oct 2017; 09:10 - 09:30 in room 7.31
In Session:
CS05: Damage and Plasticity
Friday, 13 Oct 2017; 08:30 - 10:30 in room 7.31
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1st and presenting Author
Volker Fohrmeister
Institute of Mechanics
TU Dortmund University
Dortmund, Germany
Institute of Mechanics
TU Dortmund University
Dortmund, Germany
2nd Author
Alexander Bartels
Institute of Mechanics
TU Dortmund University
Dortmund, Germany
Institute of Mechanics
TU Dortmund University
Dortmund, Germany
3rd Author
Jörn Mosler
Institute of Mechanics
TU Dortmund University
Dortmund, Germany
Institute of Mechanics
TU Dortmund University
Dortmund, Germany
Micro Abstract:
We present a generic framework for thermomechanically coupled gradient-enhanced plasticity theory based on variational constitutive updates, i.e., all relevant equations are fulfilled by minimizing an incremental potential. Within the numerical implementation, the exact derivatives of this potential are computed by means of hyper-dual numbers. By doing so, the laborious task of implementation is highly reduced.