Accession Number : AD0772919

Title :   Sensitivity of Material Response Calculations to the Equation of State Model

Descriptive Note : Final rept. May-Oct 1973

Corporate Author : SYSTEMS SCIENCE AND SOFTWARE LA JOLLA CA

Personal Author(s) : Wray, William O

PDF Url : AD0772919

Report Date : Dec 1973

Pagination or Media Count : 63

Abstract : The report examines the sensitivity of material response calculations to the choice of equation of state model. Three equation of state models, all of which are available as subroutines in the RIP code, are considered: (1) modified PUFF; (2) RIP mixed phase; and (3) GRAY. Each of these models is used to calculate the one-dimensional response of aluminum, beryllium and titanium; this series of calculations is performed for two distinct x-ray sources. The sensitivity of the calculated material response to the choice of equation of state model is characterized in terms of the generated impulse and the peak propagating stress at the time the radiation source is cut off. For the calculations presented in this report, the three equation of state models are in fairly good agreement.

Descriptors :   *ALUMINUM, *BERYLLIUM, *COMPUTER PROGRAMS, *EQUATIONS OF STATE, *TITANIUM, MATHEMATICAL MODELS, SENSITIVITY

Subject Categories : Metallurgy and Metallography
      Computer Programming and Software
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE