Adiabatic Shear Bands in Simple and Dipolar Viscoplastic Materials

Abstract

We have analyzed the thermomechanical deformations of a viscoplastic body deformed in either simple shear or plane strain compression with the objectives of studying the initiation and development of shear bands. The material defect has been modeled by either introducing a temperature perturbation, or a weaker material, or a void, or a rigid non-heat-conducting inclusion at the site of the defect. The viscoplastic response of the material has been represented by various constitutive relations. It is found that different ways to model the material defect give similar results, and that the Bodner-Partom law gives results that are in better agreement with experimental findings than predictions from other flow rules.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1991
Accession Number
ADA246055

Entities

People

  • Romesh C. Batra

Tags

Communities of Interest

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

DTIC Thesaurus Topics

  • Boundary Value Problems
  • Chemistry
  • Computational Science
  • Crystal Structure
  • Differential Equations
  • Finite Element Analysis
  • Heat Transfer
  • Materials
  • Mechanical Properties
  • Mechanics
  • Partial Differential Equations
  • Shear Stresses
  • Stress Concentration
  • Stress Strain Relations
  • Thermal Conductivity
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Mechanical Engineering/Mechanics of Materials.