Accession Number:

AD0763753

Title:

The Mechanics of Materials with Permanent Memory. Part I.

Descriptive Note:

Technical rept.,

Corporate Author:

UTAH UNIV SALT LAKE CITY DEPT OF CIVIL ENGINEERING

Report Date:

1973-07-01

Pagination or Media Count:

87.0

Abstract:

The report deals with the stress constitutive problem for a class of materials typified by highly filled propellants. These materials exhibit both permanent and fading memory effects. The permanent memory effect is due to damage or microstructural weakening. A particular deformation history causes a certain damage. The stress response depends on this state of damage together with the deformation history itself. Introducing the idea of a damage functional, the stress response functional is assumed to depend on the history of that functional in addition to the deformation history itself. A topological structure is then built in which the stress response functional can be assumed continuous and differentiable. A Taylor series type expansion of the stress response functional is taken about the rest deformation and damage history. The topological structure leads to a Hilbert space in which a representation for the first order approximation is obtained. Modified author abstract

Subject Categories:

  • Solid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE