THEORETICAL HYPERVELOCITY IMPACT CALCULATIONS
Abstract
The principal uncertainty in the visco-plastic model of hypervelocity impact is the lack of data on strain-rate effects under the severe conditions of interest. Estimates of micron for iron and aluminum are first determined that are compatible both with observed strain-rate effects in plastic waves and the very abrupt shock profiles known to exist at pressures greater than about .2 megabar. In the second part of the report detailed calculations are presented describing the cratering process for a cylindrical projectile impacting a thick target of like metal. It is shown that momentum scaling cannot be justified; energy scaling for geometrically similar impact situations is accurately predicted upon taking into account the different rates of shock propagation during the early stages of the cratering process.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1964
- Accession Number
- AD0430606
Entities
People
- T. D. Riney
Organizations
- General Electric