Mat-1.600 Laskennallisen tieteen ja tekniikan seminaari

27.9.2004  klo 14.15  U356

Lourenco Beirao da Veiga, Univ.  Pavia
Integration schemes for von-Mises plasticity based on exponential maps


ABSTRACT:

I will adress the problem of solving the constitutive law for associative von-
Mises plasticity with linear isotropic and kinematic hardening.

After a brief introduction to the model and to which is perhaps the most
classical algorithm used for its approximation, I will derive a different
model formulation which allows to solve the problem using exponential maps.

Various exponential methods are shown and a comparison between them (and the
classical method above) is performed. This comparison is based on the analysis
of some algorithmical properties and on numerical tests.