Analysis and Numerical Simulation of Strain Localization in Inelastic Solids Under Fully Coupled Thermomechanical and Poroplastic Conditions
Abstract
We represent in this report a summary of the research supported by the ONR during the period June 1996 to May 31 2000 on the analysis and numerical simulation of strain localization in inelastic solids. Special attention is given to the analysis of failure under coupled thermo- and poro-plastic conditions, as well as the consideration of coupled plastic damage in solids. The highly non-smooth solutions of interest involve discontinuous displacement fields, the so-called strong discontinuities, requiring the formulation of a new framework for their inclusion in the local continuum and the development of enhanced finite element techniques that incorporate the associated singular strain fields to capture the localized dissipative mechanisms characteristic of the failure of solids in a physically correct and efficient manner. Both Lagrangian and arbitrary Lagrangian- Eulerian finite element techniques have been developed. The resulting models and numerical methods have been studied and evaluated in detail through rigorous mathematical analyses and a number of numerical simulations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2000
- Accession Number
- ADA380940
Entities
People
- Francisco Armero
Organizations
- University of California, Berkeley