Analysis of Hypervelocity Perforation of a Visco-Plastic Solid Including the Effects of Target-Material Yield Strength
Abstract
A visco-plastic flow theory for the solution of hypervelocity perforation of thin plates has been investigated. A short-time analytical solution of the governing equation including the effects of yield strength of the target material was obtained and expressions were derived for the velocities, displacements, strains and strain rates present in the target material during hypervelocity impact. In addition, pertinent parameters have been varied and a comparison has been made with the solution in which the yield strength was neglected. The results indicate that velocities, displacements, and stresses determined from the present solution are at times markedly different from the results obtained when the yield strength was neglected. The results indicate that the velocities, displacements, and stresses determined from the present solution are at times markedly different from the results obtained when the yield strength is neglected. The effects on the radius of perforation of the plate material when the yield strength is included were found to be not as significant as those of the solution neglecting target yield strength and resulted in little variation in the computed perforation radii.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1965
- Accession Number
- ADA956235
Entities
People
- Robert G. Thomson
Organizations
- National Aeronautics and Space Administration