DTIC AD0256905: FUNDAMENTAL STUDIES RELATING TO SYSTEMS pdf

DTIC AD0256905: FUNDAMENTAL STUDIES RELATING TO SYSTEMS

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Description of the Book:

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

• Creator/s: Defense Technical Information Center
• Date: 2/1/1961
• Year: 1961
• Book Topics/Themes: DTIC Archive, Williams, M L, CALIFORNIA INST OF TECH PASADENA GRADUATE AERONAUTICAL LABS, *ELASTIC PROPERTIES, *SOLID ROCKET PROPELLANTS, *PROPELLANT GRAINS, STRESSES, TEMPERATURE, MECHANICAL PROPERTIES, PHYSICAL PROPERTIES, MATHEMATICAL ANALYSIS, EQUATIONS, VISCOSITY, FAILURE(MECHANICS), RELAXATION TIME, FRACTURE(MECHANICS), DEFORMATION, THEORY, STRUCTURES

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