Thermal Runaway Due to Strain-Heading Feedback,

Abstract

A one-dimensional, dynamic, thermomechanical model, which includes nonlinear inelastic deformation, internal heat generation (strain-heating), temperature dependent material properties, thermal expansion and thermoelastic coupling, is considered for a uniform thin bar subjected to mechanical or thermal disturbances. A nonlinear Maxwell material is examined in this model and special attention is focused on the temperature change. By solving a nonlinear problem, it is found that a thermal instability, called thermal runaway, may result due to the mutual feedback between strain-heating and the temperature dependent inelastic material properties. Neglecting this important phenomenon may lead to unexpected material failure.

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Document Details

Document Type
Technical Report
Publication Date
May 28, 1985
Accession Number
ADA189798

Entities

People

  • Daniel J. Inman
  • Francis A. Cozzarelli
  • K. T. Wan

Organizations

  • University at Buffalo

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aluminum
  • Classification
  • Climate Change
  • Computational Science
  • Couplings
  • Demographic Cohorts
  • Differential Equations
  • Energy
  • Engineering
  • Equations
  • Feedback
  • Instability
  • Materials
  • Mechanics
  • Steady State
  • Thermal Expansion
  • Thermal Instability

Readers

  • Plasma Physics / Magnetohydrodynamics
  • Structural Dynamics.
  • Thermal Physics or Thermal Science.