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发表时间：2013-01-01

发表刊物：计算力学学报

所属单位：运载工程与力学学部

期号：4

页面范围：502-507

ISSN号：1007-4708

摘要：Energy absorption of non-convex multi-corner thin-walled columns subject to axial crush were investigated ,and their performance were compared with square and multi-cell square columns .First ,the three types of columns with the same wall thickness were investigated using explicit non-linear finite element software ANSYS/LS-DYNA .And then ,investigation of their energy absorption under three different requirements were carried out ,which were the same amount of material usage ,the same amount of energy absorption and the same maximum peak force .The results showed ,non-convex multi-corner columns were superior to square column as energy absorber no matter in specific energy absorption or crush force efficiency .Non-convex multi-corner columns performed better than multi-cell square column except for crush force efficiency in some cases .

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