| 空间低温杜瓦瓶凯夫拉支撑结构多约束优化设计 |
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| 引用本文： | 王国鹏,李建国,赵雅楠,洪国同. 空间低温杜瓦瓶凯夫拉支撑结构多约束优化设计[J]. 宇航学报, 2019, 40(9): 1089-1094. DOI: 10.3873/j.issn.1000-1328.2019.09.013 |
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| 作者姓名： | 王国鹏 李建国 赵雅楠 洪国同 |
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| 作者单位： | 1. 中国科学院理化技术研究所空间功热转换技术重点实验室,北京100190;2. 中国科学院大学,北京100190 |
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| 基金项目： | 国家自然科学基金(51606207); A类先导科技专项(XDA18050000) |
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| 摘 要： | 采用新型凯夫拉纤维作为某空间用小型低温杜瓦瓶的支撑材料,在验证其力学性能的基础上,设计了杜瓦瓶的支撑结构,建立了一种新的热力学耦合优化模型,给出支撑结构固有频率、热应力及发射环境下的约束条件,通过一种“离散点加密”新约束优化法计算出了支撑结构满足约束条件范围内的要求的最优设计参数。
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| 关 键 词： | 凯夫拉 支撑结构 低温杜瓦瓶 非线性约束优化 |
| 收稿时间： | 2018-11-07 |
Optimization of a Spaceflight Cryogenic Vessel Support Structure Using Kevlar Fiber |
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| WANG Guo peng,LI Jian guo,ZHAO Ya nan,HONG Guo tong. Optimization of a Spaceflight Cryogenic Vessel Support Structure Using Kevlar Fiber[J]. Journal of Astronautics, 2019, 40(9): 1089-1094. DOI: 10.3873/j.issn.1000-1328.2019.09.013 |
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| Authors: | WANG Guo peng LI Jian guo ZHAO Ya nan HONG Guo tong |
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| Affiliation: | 1. Key Laboratory of Space Energy Conversion Technology (SECT), Technical Institute of Physics and Chemistry (TIPC), CAS, Beijing 100190, China; 2. University of Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | A new kind of material called Kevlar fiber is used as the supporting material for some space used Dewars. The tensile test of the Kevlar is done and the support structure is designed. On this basis, a new thermodynamic optimization model and the computational formula of its natural frequency, thermal stress and launch environment stress are established. Finally, the optimal result is given by a new optimum design by using a constrained optimization method called “descript point encryption”. |
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| Keywords: | Kevlar Support structure Cryogenic Dewars Nonlinear constrained optimization |
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