A Modified PUFF Equation of State for Anisotropic Materials

CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2011, Vol. 28 ›› Issue (3): 368-374.

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A Modified PUFF Equation of State for Anisotropic Materials

HUANG Xia¹, TANG Wenhui¹, JIANG Banghai¹, WANG Daorong²

1. College of Science, National University of Defense Technology, Changsha 410073, China;
2. National Key Laboratory of Science and Technology on Test Physics & Numerical Mathematical, Beijing 100076, China

Received:2010-03-17 Revised:2010-09-08 Online:2011-05-25 Published:2011-05-25

Abstract

Abstract: A modified PUFF equation of state is proposed with considenation of both non-linear volume change and anisotropic strength of material under compression and dilation.Taking 2-D impact of orthotropic material and thermal shock wave under X-ray radiation as examples,a finite element program is developed.The mean stresses obtained by traditional and modified PUFF equation of state are compared.They are obviously different at low compression and tension states.With increase of stress,they tends to be consistent gradually.

Key words: modified PUFF equation of state, anisotropic, nonlinearity, X-ray radiation

CLC Number:

O434.1

HUANG Xia, TANG Wenhui, JIANG Banghai, WANG Daorong. A Modified PUFF Equation of State for Anisotropic Materials[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2011, 28(3): 368-374.

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A Modified PUFF Equation of State for Anisotropic Materials

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