Consistent Kinetics Porosity (CKP) Model: A Theory for the Mechanical Behavior of Moderately Porous Solids

摘要

This report describes a constitutive model for moderately porous solids. The model combines many conventional theories for porous materials into single self-consistent formulation, which is why we call it the 'Consistent Kinetics Porosity (CKP) model.' By consistent, we mean that each feature of the model is implemented in a manner that is mathematically compatible with the other features. The CKP model has been implemented and tested in a stand-alone deformation driver code (1) and in Sandia National Laboratories' parallel arbitrary Lagrangian-Eulerian finite element code, ALEGA (2,3). The numerical implementation follows the MIG model interface guidelines (4), making it ready for implementation in other host codes with minimal modifications. The body of this report focuses on the physical theory of the CKP model.