Optimization design for priming parameters of two-point explosion based on gray theory

Aimed at the selection problem of priming parameters of two-point explosion in concrete, a method for optimizing the parameters was proposed based on the gray theory.The experimental program was developed by the orthogonal experimental design technique, static explosion experiments were simulated by the software AUTODYN under different priming parameters.The gray relational degree and the gray incidence coefficient between the priming parameters and crater diameter as well as crater depth were calculated.The optimization of the priming parameters was done based on the single-objective function and the multi-objective function, and the additional production experiments were completed.The results show that the crater diameter increases 4%-42%, the left crater depth increases(0-29)%and the right crater depth increases(0-32)%by means of the optimized parameters, the damage effect of two-point explosion in concrete is improved than before.