MATHEMATICAL MODEL FOR POROUS MEDIUM DYNAMICS

A. T. Sapozhnikov, P. D. Gershchuk
VANT. Ser.: Mat. Mod. Fiz. Proc. 1995. Вып.3. С. 25-32.

      A semi-empirical model is proposed to describe the pressure ш the porous medium under deformation and heating. The model reflects the basic experimental behavior features of porous material under deformation.
      The algorithm is given for numerical integration of the energy conservation law for porous medium in terms of viscosity and energy release. 1 lie formulas are proposed for the calculation of the shift modulus, bulk modulus, dynamic strength yield and spalling resistance of the porous medium.
      The model is intended for the program implementation of solid and porous medium dynamics. The model capabilities are demonstrated through the description of properties of carbon and some metals. The computational results are given for the impact of a thin plate against porous copper layer.