Theory of Viscoplastic Shells for Dynamic Response.

Abstract

Viscoplastic shell model is formulated which utilizes the shell membrane strains and curvatures as the kinematic variable and the shell stress resultants as the dynamic variables. The viscoplastic shell model combines the concept of Perzyna's viscoplastic constitutive equations with Bieniek's shell stress resultant formulation. The model is incorporated into the EPSA code for the analysis of shells in an acoustic medium subjected to dynamic loading which produce large elasto-viscoplastic deformations in the shell. Several examples are presented to exhibit the effect of material rate dependence upon structural response.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1982
Accession Number
ADA131272

Entities

People

  • I. S. Sandler
  • M. P. Bieniek
  • R. S. Atkatsh

Tags

Communities of Interest

  • Air Platforms
  • Counter WMD
  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Civil Engineering
  • Constitutive Equations
  • Curvature
  • Differential Equations
  • Dynamic Response
  • Engineering
  • Equations
  • Equations Of Motion
  • Experimental Data
  • Materials
  • Mechanical Properties
  • Mechanics
  • New York
  • Strain Rate
  • Stress Strain Relations
  • Stresses
  • Structural Response

Readers

  • Computational Fluid Dynamics (CFD)
  • Structural Dynamics.