Collapsible Impact Energy Absorber Of Multi Tubular Structure By Computational Analysis

Nawi, Ruzaini Mohd (2017) Collapsible Impact Energy Absorber Of Multi Tubular Structure By Computational Analysis. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Mekanik. (Submitted)

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Analysis of crashworthy structures has been a primary area of interest for many reseachers for quite a few years now . The quest for a better energy absorbing structure or a better crashworthy structure has led reseachers to carry out various analysis procedures experimentally also by simulating the characteristics. This thesis examines the deformation and energy absorption of single, double and multi-wall circular tube structure of two materials which are A36 mild steel and AZ31 magnesium alloy . The tubes are compressed axially at a speed of 15.6 m/s. Modeling and numerical simulation of these materials single , double and multi wall configuration tube is presented in ABAQUS .The performance parameters used are the deformation modes , absorbed crash energy, crush force efficiency, and specific energy absorption. The results described the using of magnesium alloy and mild steel as an energy longitudinal member used in crashworthiness applications. Magnesium alloy, material are chosen due to lighter in weight and is preferred to use to decrease the environmental pollution and fuel consumptions. In comparison , mild steel material have been used in decade in transport and automotive industry . It is observed that most of the tube structure of both materials shows mixed deformation modes due to the significant effect of stress wave propagation but only single tube magnesium alloy show concertina modes . Finally , the design was further enhanced for better crash performances by using multi-wall empty tube of magnesium alloy because of higher in energy absorbed . This study will help automotive industry to design superior crashworthy components with multi-tube structures and will reduce the experimental trials by conducting the numerical simulations.

Item Type: Monograph (Project Report)
Subjects: T Technology
T Technology > TJ Mechanical engineering and machinery > TJ1-1570 Mechanical engineering and machinery
Divisions: Kampus Kejuruteraan (Engineering Campus) > Pusat Pengajian Kejuruteraan Mekanikal (School of Mechanical Engineering) > Monograph
Depositing User: Mr Mohamed Yunus Mat Yusof
Date Deposited: 20 Jul 2022 02:52
Last Modified: 20 Jul 2022 02:52

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