Évolution du module de cisaillement avec la pression et la température

The aim of the present Note is to propose a predictive model of the shear modulus G versus pressure P and temperature T to complete the principal known elasto-plastic models implemented in hydrodynamic computer codes. The generic approach consists in modelling G(T) by considering the Lindemann theory at the melting point: the melting temperature and the shear vibration of the material are closely connected. The drastic fall of G(T) at the melting point is discussed and compared to experimental data achieved on tin (β) by ultrasonics. Finally, we propose a relationship between G(P,T) and the melting temperature. To cite this article: M.-H. Nadal et al., C. R. Physique 6 (2005).