Three-Dimensional Elasto-Plastic Analysis for Soils.
Abstract
This report presents the second year accomplishments perfecting the elasto-plastic constitutive equations of Hardin (1978) and their implementation into EPSAP (Elasto-Plastic Soil Analysis Program). Essential features of soil behavior that result from the soil skeleton being particulate are included in the soil model. It is recognized that plastic behavior of particulate materials depends on direction of effective stress increment as well as state of effective stress. Two classes of stress increment directions are defined with different plastic potential and hardening functions for each class. Work has been directed toward: (1) modeling soil strength in terms of effective stress; (2) modeling work softening behavior for class 1 plastic hardening; (3) modeling class 2 plastic hardening; (4) modeling the class 1 plastic potential function for cyclic loading; (5) possible use of undrained triaxial compression test data for clays; (6) implementation into the finite element program of constitutive models; (7) introduction of two new elements into the analysis program, a modified eight node hexahedron finite element and an eight node infinite element; and (8) improvement of the nonlinear finite element solution strategy.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 15, 1986
- Accession Number
- ADA174583
Entities
People
- Bobby O. Hardin
- George E. Blandford
Organizations
- University of Kentucky