Axial crushing behaviors of buckling induced triangular tubular structures
作者： Weiwei Li , Jianhua Dong , Hualin Fan , Hualin Fan
DOI: 10.1016/J.MATDES.2021.109513
关键词: Buckling 、 Amplitude 、 Finite element method 、 Materials science 、 Folding (DSP implementation) 、 Energy absorbers 、 Specific energy absorption 、 Compression (physics) 、 Composite material 、 Modal analysis
摘要: Abstract To reduce the initial peak force (IPF) and improve crushing efficiency (CFE) of tubular energy absorbers, buckling induced tubes (BITs) were designed based on modal analysis straight-walled triangular tubes. The mechanism BIT under quasi-static compression was revealed through finite element (FEA) theoretical analysis. It is found that can be folded according to specific mode by cleverly presetting convex-concave structure form. larger amplitude wave, smaller IPF, as well mean (MCF). But CFE greatly improved. Compared with straight tubes, high-order BITs have lower IPF but greater MCF, absorption (SEA). A simplified model Shanley proposed predict BIT. MCF predicted improved super folding (SFE) (SSFE) models. End induction introduced an efficient way keep enhance simultaneously.
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