航天器密封舱结构的安定分析与优化  

Shakedown Analysis and Optimization of Airtight Cabin Used in Spacecrafts

作　　者：王新 陈耕[1,2] 刘峰 余晨帆[3] 张乐乐 WANG Xin;CHEN Geng;LIU Feng;YU Chenfan;ZHANG Lele(School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Beijing,100044;National International Science and Technology Cooperation Base,Beijing Jiaotong University,Beijing,100044;Beijing Institute of Spacecraft System Engineering,Beijing,100094)

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044 [2]北京交通大学轨道车辆运用工程国家国际科技合作基地,北京100044 [3]北京空间飞行器总体设计部,北京100094

出　　处：《中国机械工程》2022年第20期2502-2508,共7页China Mechanical Engineering

基　　金：中央高校基本科研业务费专项资金(2020RC202);国家自然科学基金(52075033)。

摘　　要：壁板式密封舱结构是返回式航天器的主要金属部件,其载荷复杂、可靠性要求高、结构优化目标不易实现。由于以弹性极限为核心的传统设计方法难以在保证强度的前提下有效实现结构减重,提出了一种基于安定理论的密封舱结构设计与优化方法。使用Abaqus参数化建模方法对不同参数组合下的模型进行了批量化安定分析,在得到各种设计构型的安定载荷因子后进行了详尽的敏感度分析,综合考虑了各构型的质量强度关系并给出了效率较高的设计方案。研究结果表明,将安定分析用于密封舱结构,可以在保持质量不变的前提下,通过优化结构尺寸有效提高承载能力。As the main metal components of return-type spacecraft,the integrally stiffened structure of airtight cabins was subjected to complex loads and had to meet high reliability requirements,therefore it was not easy to achieve structure optimization.Since the traditional design method with elastic limit as the core was difficult to achieve structural weight reduction effectively with the premise of ensuring strength,a structural design and optimization method of airtight cabins was proposed based on shakedown theory.Parametric modeling method of Abaqus was used to perform a batch shakedown analysis of the model with different combinations of parameters.After calculated the load factor from each samples and performed very detailed parameter sensitivity analyses,the strength-to-weight relationship of each configuration was integrated into account and a more efficient design solution was given.Results show that,using shakedown analysis in airtight cabins,the load-carrying capacity may be improved by optimizing structural dimensions,while keeping the weight unchanged.

关 键 词：安定 密封舱 参数化建模 结构优化 

分 类 号：V414.19[航空宇航科学与技术—航空宇航推进理论与工程]