Finite-strain formulation and FE implementation of a constitutive model for powder compaction

  title={Finite-strain formulation and FE implementation of a constitutive model for powder compaction},
  author={S. Stupkiewicz and A Piccolroaz and Davide Bigoni},
  journal={Computer Methods in Applied Mechanics and Engineering},
Abstract A finite-strain formulation is developed, implemented and tested for a constitutive model capable of describing the transition from granular to fully dense state during cold forming of ceramic powder. This constitutive model (as well as many others employed for geomaterials) embodies a number of features, such as pressure-sensitive yielding, complex hardening rules and elastoplastic coupling, posing considerable problems in a finite-strain formulation and numerical implementation. A… Expand

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