Composite Explosive Energy Output And The Target Plate Plastic Deformation Response Study

To investigate the explosion energy output of composite explosives and large plastic deformation of the clamped square plate subjected to air non-contact explosion loading, the experimental investigations, theoretical analysis and numerical simulations were carried out with a comparison of insensitive RDX and aluminized RDX explosives. The parameter of deflection is emphases.The main work and results are as follows:1. The experimental study on the deflection of the square plate was conducted. There were two experimental projects: the charge parallel the plate (project A) and the charge perpendicular to the plate (project B). The results are as follows: with the increase of distance, the action area of detonation products on the surface of target plate is larger and the deflection of target plate is smaller. With the same explosives and the same distance, the deflection of target plate in project B is larger than that in project A. With the different explosives and the same distance, the deflection of target plate under explosive loading of aluminized explosives is larger in project A, but it is smaller in project Bothe plate deformation concentrates on the center of the plate in the project B, but it doesn't in the project A. The results showed: the deformation of the target plate subjected to air explosion loading can be attributed to the co-effects of detonation products and shock wave.2. The detonation product mark of aluminized RDX explosives on the target plate is not in evidence as that of insensitive RDX.3. The theoretical study with the semiempirical expression and the numerical simulation on the large plastic deformation of the target plate were conducted. The theoretical results of the semiempirical expression and program simulating results are agreement well with the experimental data, which could be applied to the large deformation of the steel plate structure and the engineering prediction of the damage or safety of the target plate under the action of explosive blast wave in future.