Further Results on the Initiation and Growth of Adiabatic Shear Bands.
Abstract
Growth of perturbations in the simple shearing deformation of a softening thermo-visco-plastic solid have been examined by means of a finite element technique. It has been found that very small perturbations grow slowly at first, even though the underlying homogeneous stress strain response has passed peak stress, but that eventually explosive growth occurs. During the slow growth phase, the stress follows the homogeneous response quite closely, but in the explosive phase, the stress drops precipitously. Large perturbations grow at a larger initial rate, and accelerate rapildy even before peak homogeneous stress. Inclusion of a dipolar plastic effect appears to be stabilizing. Keywords: Plastic deformation; Material instability; and Adiabatic shear bands.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1986
- Accession Number
- ADA168012
Entities
People
- Romesh C. Batra
- Thomas W. Wright
Organizations
- Ballistic Research Laboratory