THIN ALUMINUM TUBE AS A STRUCTURE OF BUMP ENERGY ABSORBER

  • Witono Hardi Universitas Khairun
Keywords: energy absorbed, thin aluminum tube, aluminum alloy, finite elemen method

Abstract

The number of deaths from car accidents is an issue of great concern recently. The main
cause of death is the incident of collisions on passengers during a collision between
vehicles. One of the effort to reduce the risk by installing a structure that can absorb the
impact energy. A lot of research has been done on the use of thin-walled structures as
energy impact absorber. In this study the thin tube aluminum alloy is used as the
structure of energy absorber. A thin tube of 20 mm in diameter with a thickness of 0.5 mm
and 1 mm is subjected to a drop test with varying load heights. The kinetic energy
absorbed by the structure and the maximum deformation occurred is calculated the
energy efficiency absorbed per unit length. Drop test is conducted by using ANSYS
WORKBENCH 18.2 student version which software is based on finite element method.
The dropweight is modeled by a stainless steel cube 7.8 kg of weight The altitude varies 1
m, 2 m and 3 m. . From the results of this simulation it is found thatenery per crush length
sequentially are5317.662 J/m, 6024.821 J/m and 6246.636 J/m at heigh 1m ,2mand 3 m
the thickness is 1 mm. The thickness of 0.5 mm are 2377.077 J/m, 3023.196 J/m and
3538.99 J/m

Downloads

Download data is not yet available.

References

Norman Jones, Structural Impact, The University of Liverpool, Published by
Cambride University Press, 1989
Witono Hardi, Analisa Collision Pada Chasis Kendaraan Kota M-Its 4ws, tesis
S2 ITS 2006
Zaini Ahmad, Impact of Energy Absorption of Empty and Foam-Filled Conical
Tube, Queenslnad university of Technology, 2009
Guoxing Lu and Tongxi Yu Energy absorption of structures and
materialsFirst published 2003,Woodhead Publishing Ltd and CRC Press
LLC © 2003,Woodhead Publishing Limited
Awali, Jatmiko, Choiron, Moh Agus, Yuda Surya Irawan., 2015, “Pengaruh
Variasai Geometri Crashbox 2 Segmen Terhadap Kemampuan Menyerap
Energi Impak Dengan Simulasi Komputer”, Jurnal Rekasaya Mesin,
ISSN 2477-6041 Vol. 5, No.21, 2014 p.113-118
Published
2018-01-18