Evaluation of Three Constitutive Models for Soils.
Abstract
The finite element method provides a powerful technique for analysis of stresses and movements in earth masses, and it has already been applied to a number of practical problems including embankment dams, open excavations, braced excavations, and a variety of soil-structure interaction problems. If the results of soil deformation analyses are to be realistic and meaningful, it is important that the stress-strain characteristics of the soil be represented in the analyses in a reasonable way. This is difficult becuase the stress-strain characteristics of soils are extremely complex, and the behavior of soil is nonlinear, inelastic, and highly dependent on the magnitudes of the stresses in the soil. The purpose of this report is to compare the characteristics of the hyperbolic, the Cam Clay and the Al-Shawaf and Powell stress-strain models for use in finite element analyses of earth masses. The principal objective of the study was to investigate the potential advantages and disadvantages of the Al-Shawaf-Powell model as compared to the other, more widely used stress-strain relationships.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1979
- Accession Number
- ADA068222
Entities
People
- James M. Duncan
- Patrick C. Lucia
Organizations
- University of California, Berkeley