Numerical analysis of a steel hollow beam subjected to axial compression and oblique loadings
List of Authors
  • Rizal Zahari , Syed Aftab

Keyword
  • Quasi-static and dynamic analysis, oblique loadings, high strain rates, peak load, specific energy absorption (SEA)

Abstract
  • Over the past few decades there has been a growing interest in designing a structural component which is capable of absorbing a large amount of energy during impact. This so-called energy absorbers have found common usage in many applications such as in aircraft, automotive, and road barriers. This paper presents the crush analysis of a hollow square beam subjected to axial compression and oblique loadings. Quasi-static and dynamic numerical analyses using ANSYS finite element analysis commercial package were carried out on the beam subjected to various angles of oblique loadings applied at the edge of the beam to simulate one of the actual load cases which might occur in the event of impact. The isotropic strain hardening rule and the Johnson-Cook material models (for high strain rates) were utilized for the quasi-static and dynamic crush analyses respectively. Validation of the numerical analysis were carried out and the results were in good agreement with the published results which confirms the accuracy of the simulation scheme. Parametric study was performed for the steel hollow tube to investigate the effect of beam wall thickness, load obliquity, and the impact velocity onto the specific energy absorption (SEA) and the initial peak load. Based on the quasi-static analysis, it has been observed that the peak load and SEA increases with the beam wall thickness but linearly reduced when the oblique angles of the applied loadings are increased. On the other hand, increasing in the impact velocity has resulted in the increase in both the SEA and peak load.

Reference
  • [1] P.Xue, M.L.Ding, C.F.Qiao,T.X.Yu, “Crashworthiness study of a civil airctaft fuselage section,” Latin American Journal of Solids and Structures, 11(9), 2014.

    [2] H.F. Mahmood, and A.Paluszny, “Design of thin walled columns for crash energy management-their strength and mode of collapse,” 4th International Conference on Vehicle Structural Mechanics. Detroit(MI), November 1981.

    [3] D.C. Han and S.H. Park, “Collapse behavior of square thin-walled columns subjected to oblique loads,” Thin-Walled Structures,vol 35(3), pp 167-174,1999.

    [4] A. G.R.Reyes, M. H., L. Magnus, O.S. Hopperstad, “Crashworthiness of aluminum extrusions subjected to oblique loading: experiments and numerical analyses,” Int J of Mech Sciences, vol 44,pp.1965–1984, 2003.

    [5] G. Nagel, Impact and Energy Absorption of Straight and Tapered Rectangular Tubes, Phd Thesis, Queensland University, Australia, 2005.

    [6] E. F. Abdewi, S. Sulaimen, A.M.S. Hamouda, E. Mahdi “Quasi-static axial and lateral crushing of radial corrugated composite tubes,” Thin-Walled Structures, vol 36 (3), pp 320-332,2008.

    [7] A. Abbasi-Bani, A. Zarei-Hanzaki, M. H. Pishbin, & N. Haghdadi, “ A comparative study on the capability of Johnson-Cook and Arrhenius-type constitutive equations to describe the flow behavior of Mg-6Al-1Zn alloy,” Mechanics of Materials, vol 71, pp 53-6, 2014.

    [8] S.T. Taher, R.Zahari, S.Ataollahi, F.Mustapha, S. Basri, “A double cell Foam-Filled Composite Block for Efficient Energy Absorption under Axial compression,” Composite Structures, vol 89 (3), pp 399-407.

    [9] E. Rasooliyazdi, R. Zahari, A. Ghadianlou, A. Farhaninejad, B. Sahari, F. A. Aziz, H. Jamali,” Crashworthiness design of a vehice side door beam based on the elliptical geometry modification using multi-objective optimization,” International Review of Mechanical Engineering, vol 8(1), pp 28-35, 2014.

    [10] M.Ferdynus, K. Szklarek, M. Kotelko, “Crashworthiness perfomance of thin-walled hollow and foam-filled prismatic frusta, Part 2: Experimental study.

    [11] L. K. Teek R. Zahari, M.T.H Sultan, F. Mustapha, “Experimental Assessment of the Collapse Behaviour of Hybrid Composite Square tube Subjected to oblique loadings,” The International Journal of Engineering and Science. ISSN:2319-1813. 2014.

    [12] Ahmed Salim Saleh AL-Hamdi “Experimental and Numerical Crushing Behaviour of Square Metal and Composite Tubes” Thesis report, BEng. Military Technological College, Oman, 2019.

    [13] G. Balaji and K. Annamalai, "An experimental and numerical scrutiny of crashworthiness variables for square column with V-notch and groove initiators under quasi-static loading", Cogent Engineering, vol. 4, no. 1, p. 1364118, 2017.

    [14] D. Karantza and E. Manolakos “Crashworthiness Analysis of Square Aluminum Tubes Subjected to Oblique Impact: Experimental and Numerical Study on the Initial Contact Effect”, Metals vol.12, p.1862, 2022.

    [15] Y. Zhang, N. He, Y.Hou, “Crashworthiness optimization of a vertex fractal hexagonal structure”, International Journal of Computational Methods, vol 17, No. 07, 1950031, 2020.