基于优化最佳逼近的火箭弹高速侵彻等效缩比方法

Equivalent Scaling Method of High-speed Rocket Projectile Penetration Based on Optimization of Optimal Approximation

文中基于优化理论开展了火箭弹高速侵彻等效缩比方法研究。通过量纲分析、优化拉丁超立方方法确定弹长、弹径、弹体初速度及靶标厚度为设计变量的样本空间,高精度数值计算获取设计变量关于弹体过载和持续时间的目标响应,建立快速分析模型,以响应最佳逼近为优化目标,以最小缩比为约束,模拟退火算法实现等效缩比优化模型的求解。优化结果代入侵彻模型进行参数反演,结果表明,缩比模型与原模型的过载特性具有较高的一致性。

Based on optimization theory , equivalent scaling method of high-speed penetration projectile was carried out in this paper .Four designed variables were length , radius, initial velocity of projectile and thickness of target , which were determined according to dimension-al analysis and Latin Hypercube sampling optimization methods .The designed variables on acceleration and duration of projectile response were obtained through high-precision numerical simulation , the designed variables and objective response were achieved and a rapid analy-sis model was established , the optimization was to find out approximation to the best response , and the minimum reduction ratio was regar-ded as constraints , and equivalent scaled optimization was solved by simulated annealing algorithm .Parameter inversion was carried out through the penetration model with optimization results , and the results showed that there was high consistency between the acceleration characteristics of the scaling model and that of the original model .