Some Remarks on Rate-Dependent Plasticity,

Abstract

First, some motivation is provided for the development of a relatively simple rate-dependent theory of plasticity based on an elastic-viscoplastic constitutive model. This idealization includes unloading and allows for suitable definition of plastic strain. Next, within the scope of a purely mechanical theory, a special constitutive response is used to discuss the nature of constitutive restrictions for a finitely deforming rate-dependent material, which are obtained from an appropriate work inequality. With the help of these restrictions, certain features of the theory are elaborated upon with particular reference to normality and convexity. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1983
Accession Number
ADA136084

Entities

People

  • Paul M. Naghdi

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • California
  • Coefficients
  • Constitutive Equations
  • Continuum Mechanics
  • Deceleration
  • Engineering
  • Equations
  • Hardening
  • Mechanical Engineering
  • Mechanical Properties
  • Mechanics
  • Observation
  • Plastic Properties
  • Sequences
  • Strain Rate
  • Time Intervals
  • Unloading

Readers

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