An Elastic-Viscoplastic Constitutive Model for Earth Materials

Abstract

This report describes the development of a three-dimensional elastic- viscoplastic work-hardening constitutive relationship for earth materials. The constitutive relationship is capable of reproducing the hysteretic behavior of the material under both hydrostatic and deviatoric states of stress; it also accounts for shear-induced volume change and the effect of superimposed hydrostatic stress on shearing response. The capability of the constitutive relationship for simulating the time-dependent response of earth materials is examined; an example fit for a clayey sand is given based on static laboratory triaxial shear and static and dynamic uniaxial strain test results.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1982
Accession Number
ADA123393

Entities

People

  • Behzad Rohani
  • George Y. Baladi

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Bulk Modulus
  • Engineers
  • Equations
  • Hardening
  • Materials
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Models
  • Plastic Properties
  • Shear Modulus
  • Shear Tests
  • Strain Rate
  • Stress Strain Relations
  • Stresses
  • Three Dimensional
  • Waterways

Fields of Study

  • Engineering

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Geotechnical Engineering.
  • Structural Dynamics.