Analytical Modeling of High Rate Processes.
Abstract
Research was undertaken to deduce the mechanical properties of materials that are not usually candidates for Taylor test analysis. The Taylor test is a very promising method for acquiring data in the 10000 - 1000000 /sec. Strain rate regime. It may be the only for deducing the state of stress for these strain rates, if high strains are required. The Taylor test is usually performed for ductile metals for which there is a recovered specimen and elastic unloading is insignificant. However, many of the materials that presently interest the Air Force are not of this nature. Polymers are not of this nature. They have large elastic strains and the recovered specimen is usually of no value in determining the states of stress that the specimen has experienced during the deformation process. This is also true of some energetic materials. The mechanical behavior of energetics is of paramount importance to the Air Force's Hard Target Penetrator designers. In order to accomplish their objective, the computational mechanics group requires the mechanical behavior of energetic materials in a regime of strain rates that are consistent with impact and penetration events. This leads us to the direction that the work supported by AFOSR has taken.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 13, 1998
- Accession Number
- ADA343323
Entities
People
- S. E. Jones
Organizations
- University of Alabama