Community Research and Development Information Service - CORDIS


The need to reduce the weight of automotive assemblies to give improved fuel economy remains a major driving force within the automotive industry. Weight reduction can only be achieved provided there is no loss in the overall properties of the structure. The collapse resistance of box sections is an important consideration in this context. In this report it was demonstrated that, for a low yield stress material, there is an optimum ratio between the length of the structure and the cross-sectional area which, when exceeded, leads to unstable collapse. Also for a given section design, the primary factor governing both the radius and the number of folds obtained, at a constant impact energy, is the cross-sectional area of the box. Changes in flange width, section length and joining process did not lead to any significant change in either the number of radius of folds. The positioning of triggers had little effect on the location of fold initiation.

Additional information

Authors: JONES T B, British Steel, Welsh Laboratories, Port Talbot (GB);WHITE M D, British Steel, Welsh Laboratories, Port Talbot (GB)
Bibliographic Reference: EUR 15838 EN (1996) 119pp., FS, ECU 15.00
Availability: Available from the (2)
ISBN: ISBN 92-827-7201-2
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