重型运载火箭集中力扩散舱段多区域联合设计与优化

王志祥; 雷勇军; 段静波; 欧阳兴; 张大鹏; 王婕

doi:10.7527/S1000-6893.2021.25135

航空学报 >

2022 , Vol. 43 >Issue 3: 225135 - 225135

DOI: https://doi.org/10.7527/S1000-6893.2021.25135

固体力学与飞行器总体设计

重型运载火箭集中力扩散舱段多区域联合设计与优化

王志祥 ,
雷勇军 ,
段静波 ,
欧阳兴 ,
张大鹏 ,
王婕

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1. 国防科技大学空天科学学院, 长沙 410005;
2. 空天任务智能规划与仿真湖南重点实验室, 长沙 410005;
3. 石家庄铁道大学工程力学系, 石家庄 050043;
4. 北京宇航系统工程研究所, 北京 100071

收稿日期: 2020-12-22

修回日期: 2021-04-19

网络出版日期: 2021-06-29

基金资助

国家重点研发计划（2017YFB0306200）；国家自然科学基金（11902348）；湖南省自然科学基金（2020 JJ5650）；国防科技大学科研计划资助项目（ZK20-27）

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Multi-region integrated design and optimization of concentrated-force diffusion component in heavy-lift launch vehicle

WANG Zhixiang ,
LEI Yongjun ,
DUAN Jingbo ,
OUYANG Xing ,
ZHANG Dapeng ,
WANG Jie

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1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;
2. Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions, Changsha, 410073, China;
3. Department of Engineering Mechanics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China;
4. Beijing Institute of Aerospace Systems Engineering, Beijing 100076, China

Received date: 2020-12-22

Revised date: 2021-04-19

Online published: 2021-06-29

Supported by

National Key R&D Program of China(2017YFB0306200);National Natural Science Foundation of China(11902348);National Science Foundation of Hunan Province(2020 JJ5650);Science Project of the National University of Defense Technology(ZK20-27)

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摘要

为提高重型运载火箭集中力扩散舱段的承载能力和集中力扩散性能，提出了变截面-等比布局多区域联合设计方法和建立了基于静力分析以及工程估算方法的优化模型，并据此开展集中力扩散舱段优化设计。建立了集中力扩散舱段参数化有限元模型，基于显式动力学方法开展了结构承载性能和集中力扩散性能分析。依据集中力扩散舱段结构形式和承载特点，提出了综合多区域变厚度蒙皮、变截面主梁和副梁/桁条等比非均匀布局的联合设计方法，实现了结构精细化设计。为综合提高结构承载性能和集中力扩散性能，建立了基于静力分析和工程估算方法的优化模型，并基于模拟退火法求解该优化模型，获得了减重效果明显的优化结构。对比结果表明，捆绑接头两侧副梁/桁条靠近捆绑接头密布、捆绑接头中间副梁远离捆绑接头密布、变截面主梁以及变厚度蒙皮设计有利于提高结构承载效率和集中力扩散性能，验证了提出的多区域联合设计方法和优化模型在设计集中力扩散舱段方面的有效性和优越性，证明了本文优化工作具有一定的工程应用价值。

关键词： 重型运载火箭; 集中力扩散舱段; 集中力扩散; 极限承载能力; 联合设计; 扩散不均匀度

本文引用格式

王志祥 , 雷勇军 , 段静波 , 欧阳兴 , 张大鹏 , 王婕 . 重型运载火箭集中力扩散舱段多区域联合设计与优化[J]. 航空学报, 2022 , 43(3) : 225135 -225135 . DOI: 10.7527/S1000-6893.2021.25135

Abstract

To improve the load-carrying capacity and concentrated-force diffusion performance, a novel integrated design method combining variable profile, proportional layout and multi-region design, along with optimization model based on the static analysis and engineering estimat method is proposed for the optimal design of the concentrated-force diffusion component in the heavy-lift launch vehicle.parametric finite element model is for the concentrated-force diffusion component, of which the load-carrying capacity and concentrated-force diffusion performance are analyzed.According to the structural form and load-carrying characteristic of the concentrated-force diffusion component, an integrated design method of variable thickness, variable profiles and proportional layout is proposed for the detailed design.To comprehensively improve the load-carrying capacity and concentrated-force diffusion performance, an optimization model based on the static analysis and engineering estimat method is solved by the simulated annealing method, thereby an optimized structure with weight reduction.The comparison results show that it beneficial to improve the load-carrying efficiency and concentrated-force diffusion performance the auxiliary-beams/stringers on both sides of the strap-on devices densely close to strap-on devices the auxiliary-beams between strap-on devices densely far away from strap-on devices, main-beams with variable profile and skin with variable thickness.The effectiveness and superiority of the proposed integrated design method and optimization model are validated for the prospect of engineering application.

Key words： heavy launch vehicles; concentrated-force diffusion component; concentrated-force diffusion; ultimate load-carrying capacity; integrated design method; non-uniformity of concentrated-force diffusion

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