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| Impact energy absorption analysis and design optimization of variable cross-section beam multi-stable structures |
| Received:November 22, 2021 Revised:June 20, 2022 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20211222001 |
| KeyWord:structural optimization multi-stable beam structure vibration reduction and energy absorption beam with variable cross section |
| Author | Institution |
| 刘姣姣 |
大连理工大学 工业装备结构分析国家重点实验室, 大连 |
| 付莉莉 |
西安航天动力研究所, 西安 |
| 高超 |
西安航天动力研究所, 西安 |
| 张晓鹏 |
大连理工大学 工业装备结构分析国家重点实验室, 大连 |
| 罗阳军 |
哈尔滨工业大学深圳理学院, 深圳 |
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| Abstract: |
| This paper studies the impact absorption effects and design optimization of variable cross-section multi-stable beam-based structures.The loading/unloading simulation of the large deformed multi-stable structure is performed with the finite element analysis to analyze the principle of vibration reduction and energy absorption of multi-stable structures.The influences of the periodic arrangement in series and parallel on the overall energy absorption characteristics of the structure are also studied.The multi-parameters-based shape characterization method of the beams with variable cross-sections is proposed.According to the characteristics of the energy storage of the multi-stable structure,the optimization model for the variable cross-section multi-stable beam structure is established.The optimal variable cross-section beam shape with the total mass constant is obtained by solving the optimization problem.Furthermore,the effectiveness of the optimization is verified by the finite element analysis of the optimization results,and the dynamic response analysis of the structure under the transient impact load proves the impact protection effect of the multi-stable structure. |