Accession Number : AD0691087

Title :   NONLINEAR VISCOELASTICITY OF ALMOST-ELASTIC MATERIALS.

Descriptive Note : Technical rept.,

Corporate Author : STANFORD UNIV CALIF DEPT OF APPLIED MECHANICS

Personal Author(s) : Lockett,F. J.

Report Date : MAY 1969

Pagination or Media Count : 34

Abstract : A theory is developed for nonlinear viscoelastic materials whose behavior differs only slightly from that of a nonlinear elastic material. Solutions of problems are considered as perturbations about the solution of the corresponding problem for an elastic material, and the perturbation equations are relatively simple to solve. It is shown that, in a wide class of practically important problems, the experimental task of determining parameters is feasible, and the problem of inter-relating different types of material parameters is tractable. (Author)

Descriptors :   (*VISCOELASTICITY, THEORY), (*ROCKET PROPELLANT GRAINS, VISCOELASTICITY), MATERIALS, NONLINEAR SYSTEMS, STRESSES, EQUATIONS OF MOTION, BOUNDARY VALUE PROBLEMS

Subject Categories : Mechanics
      Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE