Investigation on Spot Welding Effect on Truss Core Panel for Crashworthiness


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One of the main concerns of the automotive industry is reduction in structural weight of automobiles. Reduction of weight on vehicles has been proven to lower the usage of fuel, and therefore save a lot of energy in order to move from one place to another. At the same time, reduction of weight often means reduction in material usage, often regarded to be threatening structural strength of parts, components or vehicles body in white (BIW). Truss Core Panel, which has been developed from the study of origami engineering, specifically plane-tilings and space fillings, is a suitable candidate because it can be produced from thin sheet metals and can be joined using spot welding. In this paper, method for evaluating truss core panels for crashworthiness has been established based previous research on crashworthiness evaluation on thin shells. The effect of different configuration of spot welding has been investigated. The number of spot weld (n) along central member and side members of truss core panel has been varied and modeled from n = 2, 4, 6 ... to n = 30, and compared to a truss core panel model that is fully welded along central member and side members. The results also show that it is possible to attain similar mean crush force to fully welded structure with smaller number of spot welds.



Materials Science Forum (Volumes 773-774)

Edited by:

A. Kiet Tieu, Hongtao Zhu and Qiang Zhu




N. Hilman et al., "Investigation on Spot Welding Effect on Truss Core Panel for Crashworthiness", Materials Science Forum, Vols. 773-774, pp. 766-775, 2014

Online since:

November 2013




[1] S. Tokura and I. Hagiwara, Forming Process Simulation of Truss Core Panel, J. Comput. Sci. Technol. 4 (2010) 25-35.

[2] S. Tokura and I. Hagiwara, A Study for the Influence of Work Hardening on Bending Stiffness of Truss Core Panel, J. Appl Mech – T ASME 77 (2010).


[3] S. Tokura and I. Hagiwara, Shape Optimization to Improve Impact Energy Absorption Ability of Truss Core Panel, J. Comput. Sci. Technol. 5 (2011) 1-12.


[4] Y. Xiang, Q. Wang, Z. Fan, and H. Fang, Optimal crashworthiness design of a spot-welded thin-walled hat section, Finite Elem. Anal. Des. 42 (2006) 846-855.


[5] M. R. Bambach, H. H. Jama, and M. Elchalakani, Static and dynamic axial crushing of spot-welded thin-walled composite steel-CFRP square tubes, Int. J. Impact. Eng. 36 (2009) 1083-1094.


[6] M. R. Bambach, G. Tan, and R. H. Grzebieta, Steel spot-welded hat sections with perforations subjected to large deformation pure bending, Thin Wall Struct. 47 (2009) 1305-1315.


[7] M. D. White and N. Jones, Experimental quasi-static axial crushing of top-hat and double-hat thin walled sections, Int. J. Mech. Sci. 41 (1999) 179-208.


[8] H. Song, Z. Fan, G. Yu, Q. Wang, and A. Tobota, Partition energy absorption of axially crushed aluminum foam-filled hat sections, Int. J. Solids. Struct. 42 (2005) 2575-2600.


[9] F. Schneider, Influence of spot-weld failure on crushing of thin-walled structural sections Int. J. Mech. Sci. 45 (2003) 2061-(2081).


[10] E. Rusinski, A. Kopczynski, and J. Czmochowski, Tests of thin-walled beams joined by spot welding, J. Mater. Process Tech. 157-158 (2004) 405-409.


[11] M. Shariati, H. R. Allahbakhsh, J. Saemi, and M. Sedighi, Optimization of foam filled spot-welded column for the crashworthiness design, Mechanika 3 (2010) 10-16.

[12] B. J. M. Alexander, An Approximate Analysis of the Collapse of Thin Cylindrical Shells Under Axial Loading, 13 (1960).

[13] T. Wierzbicki, S. U. Bhat, W. Abramovic, and D. Brodkin, Alexander Revisited - A Two Folding Elements Model of Progressive Crushing of Tubes, Int. J. Solids. Struct. 29 (1992) 3269-3288.


[14] M. Yamashita and M. Gotoh, Impact behavior of honeycomb structures with various cell specifications - numerical simulation and experiment, Int. J. Impact Eng. 32 (2005) 612-630.


[15] J. O. Hallquist, LS-DYNA KEYWORD USER's MANUAL, Vol. 1, LSTC, (2007).

[16] F. Tarlochan, A. M. S. Hamouda, E. Mahdi, and B. B. Sahari, Composite sandwich structures for crashworthiness applications, P. I. Mech. Eng. L. -J. Mat. 221 (2007), 121-130.

[17] H. Zarei and M. Kroger, Optimum honeycomb filled crash absorber design, Mater. Design 29 (2008) 193- 204.


[18] F. Seeger, M. Feucht, T. H. Frank, B. Keding, and A. Haufe, An Investigation on Spot Weld Modelling for Crash Simulation with LS-DYNA, Proceedings of the 4th LS-DYNA Anwenderforum, Bamberg, Germany, (2005).

[19] F. Seeger, G. Michel, and M. Blanquet, Investigation of Spot Weld Behavior Using Detailed Modeling Technique, Proceedings of the 7th LS-DYNA Anwenderforum, Bamberg, Germany, (2008).