东南大学学报（英文版）2022，Vol.38Issue(1)：15-19,5.DOI:10.3969/j.issn.1003-7985.2022.01.003
多管火箭动力学灵敏度分析及优化设计新方法
Novel sensitivity analysis method and dynamics optimization for multiple launch rocket systems
摘要
Abstract
This study establishes the launch dynamics method,sensitivity analysis method,and multiobjective dynamic optimization method for the dynamic simulation analysis of the multiple launch rocket system(MLRS)based on the Riccati transfer matrix method for multibody systems(RMSTMM),direct differentiation method(DDM),and genetic algorithm(GA),respectively.Results show that simulation results of the dynamic response agree well with test results.The sensitivity analysis method is highly programming,the matrix order is low,and the calculation time is much shorter than that of the Lagrange method.With the increase of system complexity,the advantage of a high computing speed becomes more evident.Structural parameters that have the greatest influence on the dynamic response include the connection stiffness between the pitching body and the rotating body,the connection stiffness between the rotating body and the vehicle body,and the connection stiffnesses among 14#,16#,and 17#wheels and the ground,which are the optimization design variables.After optimization,angular velocity variances of the pitching body in the revolving and pitching directions are reduced by 97.84％and 95.22％,respectively.关键词
多体系统Riccati传递矩阵法/多管火箭系统/发射动力学/灵敏度分析/优化设计Key words
Riccati transfer matrix method for multibody systems/multiple launch rocket system/launch dynamics/sensitivity analysis/optimization design分类
军事科技引用本文复制引用
屠天雄,王国平,芮筱亭,缪云飞..多管火箭动力学灵敏度分析及优化设计新方法[J].东南大学学报（英文版）,2022,38(1):15-19,5.基金项目
The Natural Science Foundation of China(No.11972193),the Science Challenge Project(No.TZ2016006-0104). （No.11972193）
