Accession Number:

ADA094028

Title:

The Basis for an Elastic-Plastic Code,

Descriptive Note:

Corporate Author:

STANFORD UNIV CA

Personal Author(s):

Report Date:

1976-05-01

Pagination or Media Count:

23.0

Abstract:

A complete stress-analysis of a metal-forming process is necessary in order to assess the onset of metal-forming defects such as the initiation of internal or surface cracks or the generation of residual stresses, and this demands elastic-plastic analysis. This report comprises comments on the plasticity theory formulation needed for a finite-element computer code designed for the analysis of metal forming processes. J. R. Rice has pointed out the importance of convection and rotation terms in the definition of stress-rate for inclusion in elastic-plastic constitutive relations, and that the development of uniqueness and stability analysis by R. Hill provides a convenient vehicle for including these effects. The development of these concepts is described and how they generate a convenient variational principle to form the basis of an elastic-plastic code to analyze metal forming. Author

Subject Categories:

  • Fabrication Metallurgy
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE