Blade shape and thickness influence of multi-blade cutting tool during axial impact to the extruded aluminum tube
Thin-walled structures, like crash boxes, may be used as energy absorbers in the automotive chassis. There have been lots of investigations about the behavior of these parts during frontal crashes. Previous researches show that thin-walled circular tube has the highest energy absorption among different structures. In this study, nu-merical modeling of the aluminum alloy tube is done using a 4-blades cutting tool which inserts an impact to the tube with the velocity of 10 m/s. The modeling is performed based on the comprehensive damage criterion of Hoo-putra. By using this modeling, the effects of 4-blades tool with different cutting blade’s shapes and thicknesses on effective parameters of energy absorption including max-imum displacement, maximum force, specific energy ab-sorption and crushing force efficiency are investigated. The obtained results show that the effects of shape and thickness of the cutting tool blades cannot be neglected and a multi-purpose optimization is needed for proper tool design according to the customer requirements.