Deformation Behavior of Sands under Cyclic Loading - A Micro-Structural Approach

Abstract

The overall objective of this research is to develop a constitutive model for granular materials accounting for its micro-structure. The project focussed on the theoretical development of stress-strain relationship from a micro-mechanics approach, the law governing the force-displacement behavior at a contact under a general cyclic loading condition, and the mathematical characterization of the packing structure in the form of fabric tensor of a granular assembly. Experimental tests were conducted on rod assemblies in a directional shear box to verify the developed theory. Analytical expressions were obtained for the stiffness constants of anisotropic granular assemblies.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1988
Accession Number
ADA199999

Entities

People

  • Ching S. Chang

Organizations

  • University of Massachusetts Amherst

Tags

Communities of Interest

  • Air Platforms
  • Human Systems

DTIC Thesaurus Topics

  • Air Force
  • Civil Engineering
  • Constitutive Equations
  • Coordinate Systems
  • Distribution Functions
  • Elastic Properties
  • Granular Materials
  • Materials
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Particle Spins
  • Physical Properties
  • Shear Modulus
  • Stiffness
  • Stress Strain Relations
  • Stresses

Fields of Study

  • Engineering

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Structural Health Monitoring of Composite Structures.
  • Theoretical Analysis.