The Variational Formulation Ofviscoplastic Constitutive Updatesm

  title={The Variational Formulation Ofviscoplastic Constitutive Updatesm},
  author={L.. and StainierGraduate and Aeronautical and LaboratoriesCalifornia},
  • L.., StainierGraduate, +1 author LaboratoriesCalifornia
  • Published 1999
We present a class of constitutive updates for general viscoplastic solids including such aspects of material behavior as nite elastic and plastic deformations, non-Newtonian viscosity, rate-sensitivity and arbitrary ow and hardening rules. The distinguishing characteristic of the proposed constitutive updates is that, by construction, the corresponding incremental stress-strain relations derive from a pseudo-elastic strain-energy density. This in turn confers the incremental boundary value… CONTINUE READING
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