New Computational Framework for Modeling Porous Materials
Abstract
This proposal is devoted to the development of a new framework for modeling ductile damage.While currently modeling is done using plastic potentials expressed in terms of stresses, here it isproposed a new approach and formulation in the strain-rate space. It is expected that fundamentalunderstanding of the influence of the loading path on damage evolution will result using this newframework. Specifically, the aim is to determine the combined effects of invariants (shear-meanstrain rate effects) on the overall response for general three-dimensional loadings. While atpresent, the effective response is known only for inelastic materials obeying simple flow criteria(e.g. J2 flow theory or power-type law fluids), it is conjectured that within this new framework itwill become possible to establish the effective response for materials for which plastic flow iscomplex. Furthermore, new integration algorithms will be developed for such coupled plasticity damage model and thus advance the computational techniques for predicting and thus controllingdamage accumulation for a large class of materials of interest in defense applications.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 28, 2018
- Source ID
- FA95501810517
Entities
People
- Oana Cazacu
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Florida