EQUATION OF STATE OF SOLIDS. II ALUMINUM AND TEFLON
Abstract
The pressure-volume-energy (P-V-E) equation of state of aluminum and Teflon has been investigated. The P-V-E equation of state of a material is needed to solve nonreactive flow problems using computer codes such as PUFF. Explosively induced shock waves have been used to generate Hugoniot curves for solid and porous specimens of aluminum and Teflon. For aluminum it is found that the following P-V-E equation of state can reproduce the experimental data quite nicely: P = bE + g(V) b is a constant and g is an arbitrary function of V. This corresponds to gamma/V = constant, where gamma is Gruneisen's ratio. Because of the spread of the Teflon data in the P-V plane, it was not possible to obtain a P-V-E fit. However, the data imply that Gruneisen's ratio varies from about 0.7 to 1.4 at high pressures. Gas gun experiments using manganin wire pressure recordings were performed. Sound speeds deduced rom these records imply that Teflon becomes anomalously stiff under shock.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1967
- Accession Number
- AD0820805
Entities
People
- A. L. Fahrenbruch
- G. D. Anderson
Organizations
- SRI International