A finite strain elastoplastic model based on Flory’s decomposition
Palavras-chave:
Large strains, Plasticity, Flory’s decomposition, Total Lagrangian formulation, FEMResumo
In this study, an alternative formulation is proposed to solve large strain elastoplastic problems. In the
proposed strategy, the Flory decomposition is adopted, enabling the separation of volumetric and deviatory
stresses at the Lagrangian space. In addition to stresses, the energetically conjugated strains, namely, volumetric
and isochoric, are also established, enabling the construction of an elastoplastic model for which the flow law
comes from the stress state, regardless the yielding surface. Representative examples are used to validate and
show the possibilities of the proposed formulation.
