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Yang, Mao; Han, Bin; Su, Pengbo; Li, Feihao; Zhao, Zhongnan; Zhang, Qi; Zhang, Qiancheng; Hong, Zhenjun; Lu, Tian Jian
Mechanics of advanced materials and structures, 11/2021, Volume: 28, Issue: 23Journal Article
All-metallic truncated conical sandwich shells with corrugated cores (TCSS) were investigated for crashworthiness under quasi-static oblique compression using a combined experimental and numerical approach. Subsequently, multi-objective optimization design of the TCSS was also performed by adopting the algorithm of NSGA-II to achieve maximum specific energy absorption (SEA) and minimum peak force ( ). Compared with a monolithic shell, the TCSS exhibits much higher SEA and lower under oblique loading, especially with its semi-apical angle set around 10° to 15°. The results provide valuable guidance for the application of truncated conical sandwich tubes in protective engineering, such as vehicle crashworthiness.
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