Microcrack dependent discontinuity conditions across a shock front

Conference · Mon Jun 01 04:00:00 EDT 1987

OSTI ID:6376497

Stout, R B

A shock front analysis for propagating spatial discontinuities of microcrack density, mass density, momentum density, and energy density is developed. The analysis is based on concepts from discontinuum mechanics, which in the case of microcrack kinetics represents interatomic discontinuities between the surfaces of a microcrack by a relative deformation functional. The kinematics of the relative deformation functional decomposes the total relative velocity between atoms into two forms; one is a relative velocity function to describe the recoverable lattice structure motion, and the other is a relative velocity functional to describe the motion from discontinuities due to microcrack kinetics. This means that across a shock front involving microcrack kinetics, the discontinuity conditions for mass density, momentum density, and energy density will depend explicitly on the microcrack density function.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6376497
• Report Number(s): UCRL-96386; CONF-870753-5; ON: DE87011888
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
CRACK PROPAGATION
MATHEMATICAL MODELS
PHYSICAL PROPERTIES
STRESS INTENSITY FACTORS
THERMODYNAMIC PROPERTIES