Accession Number : ADA297801

Title :   Stress-Stress Modelling for Heterogeneous Granular Materials Based on Micromechanics.

Descriptive Note : Final technical rept. 1 Jan 92-31 Dec 94,

Corporate Author : MASSACHUSETTS UNIV AMHERST

Personal Author(s) : Chang, Ching S.

PDF Url : ADA297801

Report Date : 15 MAY 1995

Pagination or Media Count : 74

Abstract : The objective of this research is to develop a micromechanics theory for granular material considering the effects of micro-structure. This type of micro-structural based constitutive theory is useful in many fields of studies such as in the mechanics of soil, powder, composite and ceramic. The specific efforts are focused in the following four different areas: (1) descriptions of micro-structure, (2) micro-macro relationship, (3) classes of micromechanics constitutive theory, and (4) contact law of the inter-particle binder. These four areas are the fundamental elements to the construction of a micromechanics theory for granular media. Particular attention will be given to the effect of heterogeneity in micro-structure on the micro-macro mechanical behavior. The nature of this investigation is focused on theoretical development. The developed theory is evaluated by experimental and computer simulation results. (MM)

Descriptors :   *MICROMECHANICS, *GRANULAR MATERIALS, KINEMATICS, STRESS STRAIN RELATIONS, COMPUTERIZED SIMULATION, PARTICLE SIZE, MICROSTRUCTURE, STRESS ANALYSIS, POWDERS, COMPOSITE MATERIALS, DEFORMATION, STIFFNESS, DISPLACEMENT, ELASTIC PROPERTIES, CERAMIC MATERIALS, SOILS, WAVE PROPAGATION, HETEROGENEITY, PARTICULATES, BINDERS.

Subject Categories : Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE