ةvolution 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).