An Empirical Material Constant on the Hugoniot of Solids: From Comparative Study of Porous Materials

From the systemically comparative study of previous experimental solid Hugoniot data of different porous samples, a new material parameter , which keeps in constant along Hugoniot for all kinds of solid materials, was revealed. For different materials, the value of is different. There exist an universal power relationship between material constant and initial density 0 for metal. By using this constant , Hugoniot data between different porous samples can be converted very simply, and Grneisen parameter can also be obtained very easily. The limitation of this empirical material parameter being as a constant was discussed with variations of pressure and porosity.