Numerical simulation of ground shock produced by chemical explosion in closed soil

Empirical formula[1] can be used to get ground shock parameters produced by conventional weapons buried in soil medium. With the development of finite element technology, ground shock parameters can be obtained by numerical simulation. However, sometimes the numerical simulation results were not consistent with the empirical formula results[2].A two-dimensional axial symmetry model and a three-dimensional model were set up to calculate the ground shock from a fully buried spherical charge, numerical results and empirical formula results were compared and the causes of the calculation error were analyzed.