Finite Element Structural Analysis and Topology Optimization of a Vehicle-borne Missile Launching Cradle

被引：0

作者：

Niu C. ^{[1
,2
]}

Gu G. ^{[1
]}

Zhu L. ^{[1
]}

Xu H. ^{[1
]}

Li Z. ^{[1
]}

Zhang W. ^{[2
]}

Chen Y. ^{[1
]}

Wang B. ^{[1
]}

Shi J. ^{[1
]}

Li Y. ^{[1
]}

机构：

[1] Xi'an Modern Control Technology Research Institute, Shaanxi, Xi'an

[2] State IJR Center of Aerospace Design and Additive Manufacturing, School of Mechanical Engineering, Northwestern Polytechnical University, Shaanxi, Xi'an

来源：

Binggong Xuebao/Acta Armamentarii | 2023年 / 44卷 / 02期

关键词：

finite element analysis; topology optimization; vehicle-borne missile launching cradle;

D O I：

10.12382/bgxb.2021.0561

中图分类号：

学科分类号：

摘要：

Launching cradle is a key load-bearing component of a vehicle-borne missile launcher. Its static and dynamic structural characteristics, such as structural stiffness and natural frequency, significantly affect the accuracy of missile launching. Using a vehicle-borne missile launching cradle as the research object, the loading characteristics are investigated through finite element modeling and analyses under various load conditions such as overloading during marching and missile-carrying. General guidelines for missile loading, unloading, and launch sequence planning are proposed based on the finite element analysis results. The launching cradle's topology optimization is then performed with multiple load conditions considered. The influence of manufacturing constraints as well as minimum and maximum member size constraints on the optimized topological configuration is investigated. The launching cradle is reconstructed according to the optimized configurations. Finite element analyses are carried out to verify the optimized design. Compared with the original design, the weight is reduced by 10. 69% while both structural rigidity and strength are improved under almost all considered load conditions. The maximum improvement in structural rigidity reaches 21. 47%, and the maximum reduction in equivalent stress reaches 31. 97% . Meanwhile, the first six natural frequencies increase by more than 12%, which is of great significance for reducing launching disturbances. © 2023 China Ordnance Society. All rights reserved.

引用

页码：437 / 451

页数：14

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