Progressive Failure and Energy Absorption of Aluminum Extrusion Damage

Abstract

Aluminim Tubular structures are of interest as viable<br><br>energy absorbing components in vehicular front rail<br><br>structures to improve crashworthiness. Desirable tools<br><br>in designing such structures are models capable of<br><br>simulating damage growth in Aluminim materials. This<br><br>paper studied the deformation and damage behaviors of<br><br>aluminum-alloy under crushing loadings. The numerical<br><br>analysis is carried out by Abaqus software. Subsequently,<br><br>the collapse behavior of aluminim extrusion damage<br><br>was experimentally characterized. Finally in order<br><br>to find more efficient and lighter crush absorber and<br><br>achieving minimum peak crushing force, response surface<br><br>methodology (RSM) has been applied for optimizing the<br><br>square aluminim extrusion tube.