OPTIMIZATION IN THE ASPECT OF CRASH TRIGGERS PATTERN UNDER AXIAL AND OBLIQUE IMPACT LOADING

Abstract

A crash box is a thin-walled structure made of metal, alloy or composite material which is mounted on the front region as well as rear region of the vehicle. Main purpose of crash box is to absorb the energy during the collision event i.e. crash. A crash box should absorb maximum possible energy and should deform sequentially so that the deformation pattern is not random. In this paper the effect of various types of triggers is investigated for mild steel crash boxes. Triggers are the mechanism provided for structural failure or deformation of sections, importance of structural failure is to reduce the shock during the impact and smoothly transfer of energy to the supporting structure. A comparative study of variation of peak forces, energy absorbed was done with the variation of crash triggers for crash box. Force vs. displacement curves were plotted for each case providing detailed discernment into the force variation during deformation.