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On integration strategies for Perzyna-type viscoplasticity, and application to zero-thickness interface elements

Autor
Aliguer, I.; Carol, I.; Sture, S.
Tipus d'activitat
Presentació treball a congrés
Nom de l'edició
12th International Conference on Computational Plasticity: fundamentals and applications
Any de l'edició
2013
Data de presentació
2013-09
Llibre d'actes
Computational Plasticity XII: fundamentals and applications: XII International Conference on Computational Plasticity: Barcelona, Spain: september 3-5, 2013: proceedings
Pàgina inicial
1331
Pàgina final
1340
URL
http://congress.cimne.com/complas2013/proceedings/ Obrir en finestra nova
Resum
In this paper, Perzyna-type viscoplastic rate equations are integrated for a time step by considering the step as stress-driven. Depending on how the increment is imposed (constant, linear etc.), different strategies arise. The secant compliance is obtained by truncated expansion of the yield function. The viscoplastic model can be applied to materials exhibiting rate-dependent behavior, but it can also be used to recover an inviscid elastoplasticity solution when stationary conditions are reach...
Paraules clau
FEM, Interface elements, Viscoplastic relaxation, Viscoplasticity
Grup de recerca
MECMAT - Mecànica de Materials

Participants