Crashworthiness Characteristics of Multi-Cell Tubular Structures Subjected To Axial Impact 
A. Praveen Kumar1, L. Ponraj Sankar2, D. Maneiah3, B. Raju4
1A Praveen kumar*, Department of Mechanical Engineering, CMR Technical Campus, Hyderabad, India.
2L. Ponraj Sankar, Department of Civil Engineering, CMR Institute of Technology, Hyderabad, India.
3D. Maneiah, Department of Mechanical Engineering, CMR Technical campus, Hyderabad, India.
4B.Raju, Department of Mechanical Engineering, CMR Technical campus, Hyderabad, India.
Manuscript received on November 10, 2019. | Revised Manuscript received on November 17, 2019. | Manuscript published on 30 November, 2019. | PP: 3911-3915 | Volume-8 Issue-4, November 2019. | Retrieval Number: D8325118419/2019©BEIESP | DOI: 10.35940/ijrte.D8325.118419
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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: To mitigate the impact forces in crash events, thin-walled tubular elements are employed as an energy absorbing attenuators in frontal part of the automotive vehicles. To develop more progressive deformation modes, at the initial period, and to absorb more impact energy at the final period of crash, it is significant to enhance the crashworthiness performance of the tube by modifying its geometrical parameters. Multi-cell tubular structures have recognized to own superior impact energy absorbing ability and lightweight effect in the modern automotive vehicles. This research article examines the deformation behaviour of thin walled aluminum alloy multi-cell tube with different stiffeners exposed to axial impact loading using numerical simulation. Nonlinear impact simulations were performed on multi-cell tubes using finite element ABAQUS/CAE explicit code. From the overall results obtained, the deformation behaviour of multi-cell tubes was compared. Furthermore, hexagonal tubes with stiffeners were retained as most prominent for better energy dissipation. This type of tube was found to be most efficient type to enhance the crashworthiness performance during axial impact.
Keywords: Axial impact, ABAQUS/CAE, Crashworthiness, Multi-cell, Stiffeners.
Scope of the Article: Sequential, Parallel and Distributed Algorithms and Data Structures.