Abstract
The transportation industry currently considers aluminium foam with interest for use in passive safety components. For low speed crashes, the crash box concept is widely used in bumper systems as a constituent for localisation of plastic energy absorption. The current paper summarises the experiences gained at the Structural Impact Laboratory related to generic, composite crash boxes made from aluminium extrusions with aluminium-foam filler. The experience is concentrated in a simple framework of design formulas that can be applied for preliminary design of such components.
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