Design, Analysis and Optimization of Linear Bundled Separation Device for Launch Vehicle

doi:10.3901/JME.2019.14.060

Journal of Mechanical Engineering ›› 2019, Vol. 55 ›› Issue (14): 60-68.doi: 10.3901/JME.2019.14.060

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Design, Analysis and Optimization of Linear Bundled Separation Device for Launch Vehicle

BI Xiangjun¹, CHEN Bingquan^1,2, WU Hao³, WANG Lipeng³, JIANG Liangliang³, WANG Bo¹, ZHOU Caihua^1,4

1. State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024;
2. CRRC Changchun Railway Vehicles Co., Ltd., Changchun 130062;
3. Beijing Institute of Astronautical Systems Engineering, Beijing 100076;
4. School of Mechanical Engineering, Dalian University of Technology, Dalian 116024

Received:2018-09-05 Revised:2019-01-09 Online:2019-07-20 Published:2019-07-20

Abstract

Abstract: Currently, the dotted strap-on linkage of launch vehicle has caused excessive concentrated load in the working process. In order to solve the problem, it's presented for the first time that a linear separation system can be applied to the issue of bundled separation between the central stage and the booster. And then linear bundled separation device is optimized to improve the power transmission efficiency and realize the lightweight design. FEM analysis is used to discuss the separation and linkage principle of linear bundled separation device, by simulating stress during binding and the separation process under transient internal pressures. Based on multidisciplinary optimization platform Isight and ABAQUS, the optimization design of linear bundled separation device is completed. Compared with the traditional dotted strap-on linkage, the optimized linear bundled separation device can lose the weight of the launch vehicle 48%, and the problem of excessive concentrated load is effectively solved. Design of linear bundled separation device and the analysis-optimization system will provide reference for our country's typical structures of launch vehicle in the future.

Key words: launch vehicle, linear separation joints, strap-on linkage, structural optimization design

CLC Number:

TG156

BI Xiangjun, CHEN Bingquan, WU Hao, WANG Lipeng, JIANG Liangliang, WANG Bo, ZHOU Caihua. Design, Analysis and Optimization of Linear Bundled Separation Device for Launch Vehicle[J]. Journal of Mechanical Engineering, 2019, 55(14): 60-68.

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Design, Analysis and Optimization of Linear Bundled Separation Device for Launch Vehicle

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