Generalized Phenomenological Cyclic Stress-Strain-Strength Characterization of Granular Media.
Abstract
This document describes the second year's efforts of a two year study to investigate the stress-strain-strengh of granular media in the hopes of characterizing it as an elastoplastic continuum. Emphasis was given to stress paths which involved rotations of the principal planes, a very real world situation, e.g., a passing moving wheel, an earthquake, etc. Also, to improve on the available data sets (hollow cylinder, and a few triaxial strength tests), a number of triaxial tests were performed in an attempt to replicate the hollow cylinder tests, investigate anisotropy (both inherent and stress induced), and probe the shape of the yield surface (that which separates elastic from plastic behavior). The second year's effort concentrated on the reevaluation of the state variables which control the stress-strain and strength characteristics of granular soil. It was discovered that there existed a unique relationship between plastic modulus and stress state, and that the assumption of the yield surface being attached to the stress state was not a bad first approach. However, the research also revealed that the significance of material anisotropy may not be as important as the type of applied surface tractions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 02, 1984
- Accession Number
- ADA173976
Entities
People
- D. B. Bloomquist
- D. Seereeram
- M. C. Mcvay
- P. F. Linton
Organizations
- University of Florida