Accession Number:

AD0288885

Title:

STRESS WAVE PROPAGATION AND SPALLATION IN UNIAXIAL STRAIN

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE AEROELASTIC AND STRUCTURES RESEARCH LAB

Report Date:

1962-09-01

Pagination or Media Count:

137.0

Abstract:

A discussion of the analytical methods of predicting uniaxial stress wave propagation and spall as a result of uniformly distributed intense impulsive loading is given. For the materials for which data currently exists, no strain-rate effects are observed on yield i.e. two aluminum alloys and the strain-rate effect on the fracture threshold is found to be small copper. For such materials a detailed analytical treatment is possible, once the constants associated with the constitutive equation and fracture criterion are evaluated. The plate impact experiment provides a convenient means of evaluating these constants. Considerations entering into the interpretation of the plate impact experiment and a detailed analysis of the effect of air between the impacting plates are given.

Subject Categories:

  • Mechanics
  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE