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

Author
Aliguer, I.; Carol, I.; Sture, S.
Type of activity
Presentation of work at congresses
Name of edition
12th International Conference on Computational Plasticity: fundamentals and applications
Date of publication
2013
Presentation's date
2013-09
Book of congress proceedings
Computational Plasticity XII: fundamentals and applications: XII International Conference on Computational Plasticity: Barcelona, Spain: september 3-5, 2013: proceedings
First page
1331
Last page
1340
URL
http://congress.cimne.com/complas2013/proceedings/ Open in new window
Abstract
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...
Keywords
FEM, Interface elements, Viscoplastic relaxation, Viscoplasticity
Group of research
MECMAT - Mechanics of Materials

Participants

  • Aliguer Piferrer, Ignasi  (author and speaker )
  • Carol Vilarasau, Ignacio  (author and speaker )
  • Sture, Stein  (author and speaker )