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Some Theoretical Aspects of the Grüneisen Coefficient for the Equation of State of Solids
Published online by Cambridge University Press: 15 February 2011
Abstract
The aim of this study is to specify the Güneisen coefficient variation versus volume γ(V). First for isotropic solid, and in the anharmonic approximation we recall the various classical laws on γ(V). On the other hand, the shock wave physics have shown the experimental evidence of the linear relationship between shock velocity (U) versus jump of particle velocity (u) with some further consequences on γ(V) [cf. MRS Symp. Proc. vol 731 paper W-8.1 (Spring 2002)]. In this paper, we point out the failure of the γ(V) representation in the anharmonic approximation to reproduce the shock wave data U(u). Taking now into account the anharmonic effects in solids, we propound a new analysis of the γ(V) law which is well suited for the shock wave physics of solids.
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- Copyright © Materials Research Society 2003