Amirkabir University of Technology Amirkabir Journal of Mechanical Engineering 2008-6032 49 4 2018 02 20 Numerical Behavior Study of Expanded Metal Tube Absorbers and Effect of Cross Section Size and Multi-Layer under Low Axial Velocity Impact Loading Numerical Behavior Study of Expanded Metal Tube Absorbers and Effect of Cross Section Size and Multi-Layer under Low Axial Velocity Impact Loading 685 696 727 10.22060/mej.2016.727 FA A. Ghodsbin Jahromi Department of Mechanical Engineering, Semnan University, Semnan, Iran Hossein Hatami Assistant Professor of Mechanical Engineering Faculty, Lorestan University, Lorestan, Iran 0000-0002-6235-6569 Journal Article 2016 01 06 In this paper, the performance of the Expanded Metal Tube absorbers under axis impact<br />loading was investigated. A cylindrical expanded metal sheets is used as an energy absorber. Thin-walled<br />expanded metal sheets, despite their low weight, have high energy absorption capacity. The cellular<br />direction of expanded metal sheets will have a large impact on the absorber behavior. In this study, a<br />sheet with angle α=0 is used to create a cylindrical Expanded Metal Tube absorber. In this study, to<br />evaluate the performance of energy absorption caused by the collapse and to achieve maximum energy<br />absorption, a numerical study of the effect of the cross-section size and making the absorber a multi-layer<br />one on the energy absorption behavior has been discussed. Numerical studies have been performed by<br />the ABAQUS Finite Element Method software. The output of ABAQUS software is displayed in form<br />of the force-displacement diagram. In this study, numerical investigation of collapse, force-displacement<br />and the effective parameters have been carried out. From the results obtained, it was observed that<br />increasing the size of the cross-section and making the absorber multi-layer , will have a significant<br />effect on the initial maximum crushing force and energy absorption capacity and making the absorber a<br />multi-layer improves the crushing efficiency. In this paper, the performance of the Expanded Metal Tube absorbers under axis impact<br />loading was investigated. A cylindrical expanded metal sheets is used as an energy absorber. Thin-walled<br />expanded metal sheets, despite their low weight, have high energy absorption capacity. The cellular<br />direction of expanded metal sheets will have a large impact on the absorber behavior. In this study, a<br />sheet with angle α=0 is used to create a cylindrical Expanded Metal Tube absorber. In this study, to<br />evaluate the performance of energy absorption caused by the collapse and to achieve maximum energy<br />absorption, a numerical study of the effect of the cross-section size and making the absorber a multi-layer<br />one on the energy absorption behavior has been discussed. Numerical studies have been performed by<br />the ABAQUS Finite Element Method software. The output of ABAQUS software is displayed in form<br />of the force-displacement diagram. In this study, numerical investigation of collapse, force-displacement<br />and the effective parameters have been carried out. From the results obtained, it was observed that<br />increasing the size of the cross-section and making the absorber multi-layer , will have a significant<br />effect on the initial maximum crushing force and energy absorption capacity and making the absorber a<br />multi-layer improves the crushing efficiency. https://mej.aut.ac.ir/article_727_fb89705ae6d743bf1e848c206e16a1d7.pdf