Collapse characteristics of multi-cell square tube structure under oblique load
LI Zhichao1, KANG Yingzi1, ZHEN Ran2, LI Ruilong2, SHANGGUAN Wenbin1
1.School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China;
2. Shandong Meichen Industry Group Co., Ltd., Weifang 262200, China
Abstract:The finite element model for calculating energy absorption characteristics of multi-cell square tube structure was established, and axial collapse tests of double-cell tubes were used to verify the correctness of the established model.The developed model was used to study collapse characteristics of multi-cell square tube structure under oblique load.Results showed that multi-cell square tube structure can have the global buckling deformation under oblique loads with angles of 20°and 30° to cause significant drop of its energy absorption capacity.Thus, a layered multi-cell square tube structure was proposed.It was shown that the layered multi-cell square tube structure has a larger energy absorption capacity and crushing force efficiency under oblique loading; under oblique loads with large angles, it can avoid the global buckling deformation.Using the complex proportion assessment method, oblique comprehensive impact performances of traditional square tubes, multi-cell ones and layered multi-cell ones were evaluated to determine the layered multi-cell square tube L5 having the optimal oblique impact performance.
李志超1,康英姿1,甄冉2,李瑞龙2,上官文斌1. 斜向载荷下多胞方管结构的压溃特性研究[J]. 振动与冲击, 2020, 39(21): 95-100.
LI Zhichao1, KANG Yingzi1, ZHEN Ran2, LI Ruilong2, SHANGGUAN Wenbin1. Collapse characteristics of multi-cell square tube structure under oblique load. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(21): 95-100.
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