Accession Number : ADA319061

Title :   Viscosity and Strain Gradient Effects on the Kinetics of Propagating Phase Boundaries in Solids.

Descriptive Note : Technical rept.,

Corporate Author : CALIFORNIA INST OF TECH PASADENA DIV OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s) : Turteltaub, Sergio

PDF Url : ADA319061

Report Date : SEP 1996

Pagination or Media Count : 71

Abstract : The theory of thermoelastic materials undergoing solid-solid phase transformations requires constitutive information that governs the evolution of a phase boundary. This is known as a kinetic relation which relates a driving traction to the speed of propagation of a phase boundary. The kinetic relation is prescribed in the theory from the onset. Here, though, a special kinetic relation is derived from an augmented theory that includes viscous, strain gradient and heat conduction effects. Based on a special class of solutions, namely traveling waves, the kinetic relation is inherited from the augmented theory as the viscosity, strain gradient and heat conductivity are removed by a suitable limit process.

Descriptors :   *PHASE TRANSFORMATIONS, *VISCOSITY, *THERMOELASTICITY, THERMOMECHANICS, STRESS ANALYSIS, REACTION KINETICS, DEFORMATION, STRAIN(MECHANICS), TEMPERATURE GRADIENTS, THERMAL CONDUCTIVITY, CONDUCTION(HEAT TRANSFER), THERMAL STRESSES, SOLID PHASES, HELMHOLTZ EQUATIONS.

Subject Categories : Mechanics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE