FUNDAMENTAL STUDIES RELATING TO SYSTEMS ANALYSIS OF SOLID PROPELLANTS

Abstract

A description is presented of the type of structural complications introduced by a viscoelastic material to provide background information for evaluating the structural integrity of a solid propellant rocket grain. From the engineering standpoint the problem areas were separated into 3 categories: (1) characterization of material properties; (2) analysis procedures; and (3) failure criteria. The assumptions under which the analysis was made are that: (1) the viscoelastic medium is isotropic, homogeneous, and continuous; (2) deformations are sufficiently small to be considered infinitesimal; (3) inertia forces, due to straining, are neglected; and (4) idealized geometries are considered for which analytical solutions may be obtained. Discussions on material characterization include the operational concept for stress-strain relations, linear viscoelastic and model representation, spectral distribution functions, temperature-time shift phenomena, and mechanical property determination.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1961
Accession Number
AD0256905

Entities

People

  • M. L. Williams
  • P. J. Blatz
  • R. A. Schapery

Organizations

  • California Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Computational Science
  • Creep
  • Differential Equations
  • Elastic Properties
  • Jet Propulsion
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Stress Strain Relations
  • Stress Waves
  • Stresses

Readers

  • Rocket Propulsion.
  • Structural Health Monitoring of Composite Structures.
  • Theoretical Analysis.