Abstract
Thin-walled tube was applicable as energy absorption in impact structural. Deformation ideally flows along tube’s axis in compression direction resulted plastic deformation. The deformation required external energy which taken from excessive source. Limitation of thin-walled tube was at collapse direction flows only in compression condition parallel to tube axis. Distortion of direction will trigger unstable collapse which reduce and blocked deformation flow. In real condition it is difficult to create perfect collapse deformation due to misalignment of flow. Compress-expand thin walled tube has wide stable area of collapse deformation compared with several tubes in compression direction. This research introduces conversion mechanism to thin-walled structure to adapt tensile direction which release from its service limitation. Tensile mechanism which called as tensile crash box using compress-expand cylindrical thin-walled tube consist of three main parts are able to absorb energy of deformation in tensile direction. Result from finite element analysis of tensile crash box was obtained that geometric parameter of compress-expand tube was highly influenced to energy absorption of tensile crash box.
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