Crashworthiness Analysis and Optimization of Thin-Walled Square Tube with Pyramidal Ripples Based on Mechanics Properties


Article Preview

Thin-walled structure absorbs most impact kinetic energy during collision accident,and they are widely used as energy-absorbing element. In order to improve crashworthiness of them, regular pyramidal ripple is added on the thin-walled square tube’s surface. Explicit finite element technology is applied to simulate the behavior of the tube under axial impact load. Simulation data was delt with by Response Surface Method to form a function of variables and response,and the new structure was optimized. Research results show that, the thin-walled square tube with pyramidal ripples can improve controllable of structure deformation obviously and Optimized structure can absorb and dissipate much more impact kinetic energy.



Edited by:

B. Xu and H.Y. Li




X. G. Hu and J. B. Yang, "Crashworthiness Analysis and Optimization of Thin-Walled Square Tube with Pyramidal Ripples Based on Mechanics Properties", Advanced Materials Research, Vol. 625, pp. 69-74, 2013

Online since:

December 2012




[1] Pugsley A, Macaulay M. The large scale crumpling of thin cylindrical columns. Quarterly Iournal of Mechanics and Applied Mathematics, 13(1): 1-9(1960).


[2] Hanssen.A. G, Langseth. M and Hopperstad O.S. Static and dynamic crushing of circulae aluminium extrusion with aluminium foam filler. International Journal of Impact Engineering, 24(5): 475-477(2000).


[3] Alexander. J.M. An approximate analysis of the collapse of thin cylindrical shells under axial load. Quarterly Journal of Mechanics and Applied Mathematics, 13: 10 -15(1969).


[4] Bai Jinze. Underlying Rationale and Case Studies of LS-DYNA3D.Beijing:Science Press, 23-60(2005).

[5] Yamazaki. K, Han.J. Maximization of the crushing energy absorption of tubes. Structural Optimizat ion. 16: 37-46(1998).


[6] Forsberg.J. On polynomial response surface and Kriging for use in structural optimization of crashworthiness.Structural and Multidisciplinary Optimizat ion, 29(3): 232-243(2005).

[7] Sui Yunkang, Bai Haibo. Plate-shell structure optimization based on central point's accurate response surface method. Journal of MachineDesign, 22(1 1): 10-l1(2005).