ARMA/NARMS 04-546 Unified Compaction/Dilation, Strain-Rate Sensitive, C for Rock Mechanics Structural Analysis Applications

Sandia’s GeoModel is a generalized plasticity model that was developed primari also applicable to a much broader class of materials such as concretes, ceramics, and even som been incorporated through empirically fitted functions found to be well suited for a wide variety been generalized to include any form of inelastic material response including pore collapse a anisotropy is supported in a limited sense through kinematic hardening. Applications involvin through an overstress model. Inelastic deformation can be associated or non-associated, and the material input parameters in the rare case when all features are needed, but simpler idealizations Mises yield, or Mohr-Coulomb failure) can be replicated by simply using fewer parameters. For computational tr relatively straightforwa using standard labor GeoModel strikes a bala micro-mechanics and genized, and semi-emp The over-arching goal general-purpose constitu for any geological or predictive over a wide r rates. Being a unified simultaneously model m or (by using only a sm parameters) it can dupli models such as classic Mohr-Coulomb failure. can require as many as complicated materials parameters for idealized