A SURVEY PAPER ON FACTORS CONTROLLING THE ENERGY ABSORPTION OF CRASH BOX

Thin-walled tubular Crash box are extensively used as energy absorbers in numerous automotive and aerospace applications as a result of their higher energy absorption capacity. In past lot of research has been done on crash tubes. Crash box of various cross section/shape and materials have been analyzed. Some researchers have done quasi-static analysis whereas some have gone for dynamic analysis. Just in case of energy absorption through dynamic impact, Speed of impact & momentum of impact are influential factors. The dimensions viz. lengths, width, wall thickness, material, and loading conditions were also varied. Crash box with metallic/structural foam filling, multi-cell or tapered crash boxes have also been studied for axial or oblique loading conditions. Some researchers have used finite element based software's for their study while others used experimental method. Review of all the above factors & their effect on energy absorption capability of tubes is taken into account during this paper, based on which the parameters will be selected for further research.

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