A THEORETICAL METHOD TO OBTAIN THE SECOND ORDER PARTIAL DERIVATIVE OF SHEAR MODU LUS WITH RESPECT TO PRESSURE | Zendy

Hua Jing-Song | Zendy; JIN FU-QIAN | Zendy; Hua Tan | Zendy

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A THEORETICAL METHOD TO OBTAIN THE SECOND ORDER PARTIAL DERIVATIVE OF SHEAR MODU LUS WITH RESPECT TO PRESSURE

Author(s) -

Hua Jing-Song,

JIN FU-QIAN,

Hua Tan

Publication year - 2000

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.49.2443

Subject(s) - shear modulus , order (exchange) , bulk modulus , materials science , shear (geology) , derivative (finance) , tungsten , alloy , crystal structure , physics , thermodynamics , condensed matter physics , crystallography , chemistry , composite material , metallurgy , finance , financial economics , economics

This article deduced a theoretical method to obtain the second order partial der ivatice of shear modulus with respect to pressure G″P from the theor y of electron structure for crystal materials.We obtained G″P0=-0.033GPa-1 for 93 tungsten alloy,and applied this result in the fini te strain theory of Birch-Murnaghan,when comparing the calculated results of G″ P0=-0.033GPa-1 with the results of G″P=0, we find the results of G″P=0 are greater than that of the results o f G″P≠0.The difference between them becomes greater when the pressu re increases. Therefore,we can conclude that G″P cannot be neglected at high pressures.

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