Constitutive model for strain rates from 10/sup -4/ to 10/sup 6/ s/sup -1/

Journal Article · Wed Feb 15 04:00:00 EST 1989 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.342968· OSTI ID:6547485

Steinberg, D J; Lund, C M

We have developed an addition to the Steinberg--Guinan high strain-rate constitutive model that extends its validity to strain rates as low as 10/sup -4/ s/sup -1/. With this new model, we have successfully reproduced a number of rate-dependent, shock-induced phenomena in tantalum, such as precursor on reshock, precursor decay, and shock smearing. We have also successfully calculated a plate-impact experiment at a loading stress of 230 GPa as well as extensive data for yield strength versus strain rate at room temperature and yield strength versus temperature at a strain rate of 10/sup -4/ s/sup -1/.

• Research Organization: Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550
• OSTI ID: 6547485
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 65:4; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700208* -- Fusion Power Plant Technology-- Inertial Confinement Technology
DATA
ELEMENTS
EQUATIONS
EQUATIONS OF STATE
INFORMATION
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
METALS
NUMERICAL DATA
SHOCK WAVES
STRAINS
TANTALUM
THEORETICAL DATA
TRANSITION ELEMENTS
YIELD STRENGTH