Design of Octagonal Energy Absorbing Members Subjected to Dynamic Load: Enhancement of Crashworthiness
Abdulbasit Abdullah1, Khairul Salleh Mohamed Sahari2, Samer F3, Jamal O. Sameer4
1Abdulbasit Abdullah, Department of Mechanical Engineer, University of Tenaga Nassional, College of Engineering, Kuala Lumpur, Malaysia.
2Khairul Salleh Mohamed Sahari, Assoc. Prof. Dr. Head of Department of Mechanical Engineering, University of Tenaga Nasional, College of Engineering, Kuala Lumpur, Malaysia,
3Samer F,  Department of Mechanical Engineer, Alanbar University, Engineering, Alanbar, Ramadi, Iraq.
4Jamal O. Sameer, Department of Mechanical Engineer, University of Tenaga Nasional, College of Engineering, Kuala Lumpur, Malaysia.
Manuscript received on November 29, 2014. | Revised Manuscript received on December 11, 2014. | Manuscript published on December 30, 2014. | PP: 144-152 | Volume-4 Issue-2, December 2014. | Retrieval Number:  B3651124214/2013©BEIESP

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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: This study examines the crashworthiness performance of the octagonal thin wall tube, based on numerical simulation. The purpose is to find the optimal design with the lowest weight and best crashworthiness parameters in order to protect the passengers’ life. Octagonal members with various trigger mechanisms (circular, square and elliptical triggers) with different distributions from the free end of tube were compared with aluminium alloy (AA6060) tube of 5 mm wall thickness, filled with hollow aluminium foam. The filled aluminium tube has given better results by enhancing the energy absorption by 7.1%, CFE by 29.4% and peak force 16% in case axial loading.
Keywords: Dynamic compression, Thin wall, energy absorption, Direct and oblique loading, aluminum foam.