Accession Number:

ADA264592

Title:

A Conservative Formulation for Plasticity

Descriptive Note:

Corporate Author:

STATE UNIV OF NEW YORK AT STONY BROOK

Personal Author(s):

Report Date:

1992-01-01

Pagination or Media Count:

33.0

Abstract:

In this paper we propose a fully conservative form for the continuum equations governing rate-dependent and rate-independent plastic flow in metals. The conservation laws are valid for discontinuous as well as smooth solutions. In the rate-dependent case, the evolution equations are in divergence form, with the plastic strain being passively convected and augmented by source terms. In the rate-independent case, the conservation laws involve a Lagrange multiplier that is determined by a set of constraints we show that Riemann problems for this system admit scale-invariant solutions.

Subject Categories:

  • Plastics
  • Numerical Mathematics
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE