NONLINEAR VISCOELASTIC STRESS ANALYSIS WITH SMALL DILATATIONAL CHANGES.

Abstract

A derivation is given of the nonlinear stress constitutive equation for viscoelastic materials with small dilatational changes. This particular derivation results in a form for the constitutive equations which is suitable for application in solving boundary value problems. The resulting equations are applied to obtain the quasi-static solution for a pressurized viscoelastic hollow cylinder bonded to an elastic casing. The inner boundary of the cylinder is assumed to be ablating and hence time-dependent. The problem is solved for linear and nonlinear, both incompressible and compressible, materials. For linear problems, both analytical and numerical solutions are obtained. For nonlinear problems, numerical solutions are evaluated by using finite difference techniques and assuming particular forms of kernel functions in the constitutive equation. The linear and nonlinear results are compared. The effects due to the material nonlinearity and compressibility are discussed. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1968
Accession Number
AD0679070

Entities

People

  • Edward C. Ting

Organizations

  • Stanford University

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Value Problems
  • Compressive Properties
  • Constitutive Equations
  • Differential Equations
  • Equations
  • Kernel Functions
  • Materials
  • Mathematics
  • Stress Analysis
  • Stresses

Fields of Study

  • Mathematics

Readers

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