Determination of JWL-EOS parameters for explosive detonation products using genetic algorithm

In view of the complexity and uncertainty of manual adjustment parameters, a new methodology of determining JWL-EOS parameters of the detonation product, based on the cylinder test data, is established by using the genetic algorithms. In this method, the ZND detonation model and three compatible relationships between six parameters of JWL EOS of the detonation product are taken into account, and the finite element procedure DYNA2D of explosive detonation driving a cylinder is considered as a subroutine. The JWL-EOS parameters of the detonation products for PBXC03 and PBXC10 explosives are determined by using this method. Then, the cylinder expansion processes, respectively driven by PBXC03 and PBXC10 explosives, are simulated and compared with the cylinder test data. The calculated results are in good agreement with the experiments. Therefore, the method and program developed in this paper are reasonable.