机载发射架地面试验系统的动力学特性仿真与优化

doi:10.16182/j.issn1004731x.joss.24-0730

摘要/Abstract

摘要：

为解决机载发射系统的地面等效试验问题，提出一种基于多变量优化方法的地面发射架试验系统动力学特性优化方法。通过对地基边界条件的讨论，建立有效的地面发射试验系统动力学仿真模型；通过机载状态和地面试验状态下发射架结构的动力学特性对比，确定优化设计的目标和约束条件；对地面试验系统的动力学特性进行优化设计。结果表明：该方法可有效地将地面发射试验系统中的发射单元动力学特性优化为与机载状态接近，降低发射冲击时的试验系统动力学响应峰值。可有效拓展至各类地面发射试验系统的动力学特性优化设计，提升机载武器地面试验验证的有效性。

关键词: 机载发射架, 地面发射试验系统, 动力学特性仿真, 动力学优化

Abstract:

To solve the ground equivalent test problem of the airborne launch system, an optimization method for the dynamic characteristics of the ground launch rack test system based on a multi-variable optimization approach was proposed. Through the discussion on the boundary conditions of the foundation, an effective dynamic simulation model of the ground launch test system was established. By comparing the dynamic characteristics of the launch rack structure in the airborne state and the ground test state, the objectives and constraints of the optimization design were determined. The dynamic characteristics of the ground test system were optimized and designed. The results show that this method can effectively optimize the dynamic characteristics of the launch unit in the ground launch test system to be close to those in the airborne state and reduce the peak dynamic response of the test system during launch impact. This method can be effectively extended to the dynamic characteristic optimization design of various ground launch test systems and enhance the effectiveness of ground test verification for airborne weapons.

Key words: airborne launch rack, ground launch test system, dynamic characteristic simulation, dynamic optimization

中图分类号:

TJ301

白瑜光,张胜,曹玉顺等 . 机载发射架地面试验系统的动力学特性仿真与优化[J]. 系统仿真学报, 2025, 37(12): 3151-3160.

Bai Yuguang,Zhang Sheng,Cao Yushun,et al . Dynamic Characteristic Simulation and Optimization of Ground Test System for Airborne Launch Rack[J]. Journal of System Simulation, 2025, 37(12): 3151-3160.

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材料	杨氏模量/GPa	泊松比	密度/(kg·m^-3)
铝	70	0.30	2 800
钢	210	0.33	7 800

阶数	完全固支	K_W=105 920	K_W=45 000	试验值
1	8.71	8.59	8.45	8.43
2	9.86	9.79	9.70	9.66
3	10.53	10.36	10.20	10.17

阶数	优化前/Hz	优化后/Hz	机载状态/Hz	优化后误差/%
1	8.45	9.96	9.32	6.4
2	9.70	11.85	12.35	4.2
3	10.20	16.02	16.62	3.7

结构参数	优化前	优化后
前挂载结构宽度	20.00	76.16
前挂载结构高度	20.00	30.58
前挂载结构厚度	5.00	6.38
前挂载结构厚度	5.00	3.70
后挂载结构宽度	30.00	30.04
后挂载结构高度	30.00	88.34
后挂载结构厚度	6.00	4.39
后挂载结构厚度	6.00	3.79
上连接板厚度	30.00	35.43
下连接板厚度	30.00	16.92