Robust Design of the Shaped Charge on the Experimental Design Method

摘要

In the field of the shaped charge structural design, some factors' variations make a great influence on the penetrative performance, those insignificant variations effect on the penetration result largely. So the shaped charge structural design pursues in both of the penetrate depth and its run-out. Based on the experimental design method, the robust design method to the shaped charge structure is proposed. In it, some structural parameters are taken as design variables, the uncertainties of the structure are considered, the penetration depth is taken as the structural response characteristic, the SN ratio which belongs to the penetration larger is better design problem is taken as the objective function. The nominal values and lower and upper bounds of design variables are arranged into an inner orthogonal array. The variance of the structural response, namely penetrate depth, is evaluated by the Taguchi method where uncertainties are arranged into an outer orthogonal array. The best design is obtained through the analysis of variance and F-test, which is used as a new nominal design in the next step. The process is iterated until reaching a convergence. A shaped charge structure with biconical liner is designed as an example. The method is demonstrated to be effective from the example design. This technique enables to get an optimum shaped charge structure design with robustness.