Crushing behavior of circumferentially corrugated square tube with different cross inner ribs
作者： Zhixiang Li , Wen Ma , Ping Xu , Shuguang Yao
DOI: 10.1016/J.TWS.2019.106370
关键词:
摘要: Abstract In this paper, new designed circumferentially corrugated square tubes (CCSTs) with cosine and triangular corrugation cross-sectional profiles, respectively, are proposed for energy absorption. Three types of cross inner ribs, namely, crisscross, X shape star shape, introduced to induce the deformation CCSTs. Quasi-static crushing test finite element simulation were used investigate performance The results showed that all profile CCSTs can not deform stably, only crisscross rib progressively. (i.e., CTC_C) under different geometric parameters was therefore further studied. It found CTC_C develops four modes, ordered progressive mode Ⅱ (OPM Ⅱ) better absorption efficiency than other modes. Finally, a theoretical model based on Simplified Super Folding Element method presented predict mean force deforming OPM Ⅱ. By comparing experimental FE results, proved be very accurate.
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