Experimental Analysis of Crashworthiness Behavior of Energy Absorber Tubes Under 3D Oblique Load

Subject Areas : Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering

ابوالفضل  خلخالی ¹ (استادیار، دانشکده مهندسی خودرو، دانشگاه علم و صنعت ایران)
علیرضا  سالور ² (دانشجوی کارشناسی ارشد، دانشکده مهندسی خودرو، دانشگاه علم و صنعت ایران)

Received: 2015-09-28 Accepted : 2015-09-28 Published : 2012-06-21

Keywords: energy absorption, Experimental analysis, Quasi-static Test, 3D Oblique Load,

Abstract :

Actual applications of the energy absorbers showed that actual loads are not applied in the form of pure axial compression, pure bending or pure torsion. In reality, an energy absorber component may be subjected to combined loading of compression, bending and torsion. A number of previous articles have investigated the behavior of energy absorbers under oblique loading. In such cases, the oblique load was considered as 2D load determined with one angle parameter to the profile of specimen. However, in reality, it is possible that the energy absorber component be under a 3D oblique load condition with three spatial components determined by two angle parameter in 3D space. In present paper, crashworthiness behavior of thin walled tubes is experimentally analyzed under 3D oblique load. To perform this job, a fixture was designed and installed on the universal tensile and compression testing machine. All tests were conducted in quasi-static form and finally a diagram of force and displacement and crushing modes were extracted and the effect of oblique load aspects on energy absorbing characteristics was investigated.

References:

[1] Johnson W., Mamalis AG., Crashworthiness of vehicles. London: Mechanical. Engineering. Publications Ltd., 1978.

[2] Johnson W., Reid SR., Metallic energy dissipating systems, Applied Mechanics Review, vol. 31(3), 1978, pp. 277–288.

[3] Jones N., Wierzbicki T., editors. Structural crash worthiness, London: Butterworth and Co. Publishers, 1983.

[4] Guoxing Lu., Tongxi Yu., Energy Absorption of Structures and Materials. England: Woodhead Publishing Ltd and CRC Press LLC, 2003.

[5] Alexander J.M., An approximate analysis of the collapse of thin cylindrical shells under axial loading Quart, Journal of Mechanicals and Applied Mathematics, vol. 13, 1960, pp.1–9.

[6] Mamalis A.G., Johnson W., The quasi-static crumpling of thin walled circular cylinders and frusta under axial compression, International Journal of Mechanical Science, vol. 25, 1983, pp. 713–32.

[7] Jones N., Abramowicz W., Static and dynamic axial crushing of circular and square tubes. In: Reid SR, editor, Metal forming and Impact Mechanics. Oxford, Pergamon Press, 1985, pp. 225.

[8] Johnson W., Impact Strength of Material. London: Edward Arnold, 1972.

[9] Abramowicz W., The effective crushing distance in axially compressed thin-walled metal columns, International Journal Impact Engineering, vol. 13, 1983, pp. 309-317.

[10] Abramowicz W., Jones N., Dynamic axial crushing of circular tubes. International Journal Impact Engineering, vol. 23, 1984, pp. 263-281.

 [11] Gupta N.K., Velmurugan R., Consideration of internal folding and non-symmetric fold formation axisymmetric axial collapse round tubes, International Journal of Solids Structures, vol. 34, 1997, pp. 2611–30.

[12] Han D.C., Park S.H., Collapse behavior of square thin-walled columns subjected to oblique loads, Journal. Thin-Walled Structures, vol. 35, 1999, pp.167-184.

 

 

 

 

 

[13] Reyes A., Langseth M., Hopperstad O.S., Crashworthiness of aluminum extrusions subjected to oblique loading: experiments and numerical analyses, International Journal of Mechanical Sciences, vol. 44, 2002, pp. 1965–1984.

[14] Reyes A., Langseth M., Hopperstad O.S., Square aluminum tubes subjected to oblique loading, International Journal of Impact Engineering, vol. 28, 2003, pp.1077–1106.

 [15] Reyes A., Longseth M., Hopperstad O.S., Aluminum foam-filled extrusions subjected to oblique loading: experimental and numerical study, Journal of Solids and Structures, vol. 41, 2004, pp.1645-1675.

[16] Ahmad Z., Thambiratnam D.P., Tan A.C.C., Dynamic energy absorption characteristics of foam-filled conical tubes under oblique impact loading, International Journal of Impact Engineering, vol. 37, 2010, 475–488.

[17] Zhibin Li., Jilin Yu., Liuwei Guo., Deformation and energy absorption of aluminum foam-filled tubes subjected to oblique loading, International Journal of Mechanical Sciences, vol. 54(1), 2012, pp. 48–56.