模拟余弦冲量载荷的柔爆索布局优化和实验验证

Layout Optimization of MDFs that Produce Cosine Density Impulse Around Cylindrical Shells and Its Experimental Validation

阐述了用柔爆索模拟强X光作用在圆柱壳外表面呈余弦分布的冲量载荷的基本原理;结合模拟余弦的柔爆索在圆柱壳周围的布局问题,简述了遗传算法的基本流程;编制了基于遗传算法的柔爆索布局优化的计算程序,给出了算例,并进行了实验验证;对算例理论计算与实测结果的分析表明,遗传算法适用于多参数优化问题,实测冲量余弦分布的偏差约在10%内,实验结果与理论计算之间存在一定误差,需引入修正系数.

The theory of cosine density impulse caused by intense X-rays around cylindrical shells simulated by mild detonating fuses （MDFs） was presented. The flow chart of genetic algorithm （GA） was stated by combining the problem of layout of MDFs around the cylindrical shells. The calculation program of optimization layout of MDFs on the basis of GA method was programmed. An example was given, and it was testified by experiments. The results of theoretical calculation and experiments were analyzed. The results show that GA method is suitable to solve multi-parameter optimization problem. The distribution error of experimental cosine impulse is about 10%. There are some differences between experimental results and theoretical results, so that the correction factor should be proposed.