Damage and Failure Model Characterization for High Strength AA6000 Automotive Aluminium Alloys

In this work we compare two different approaches for characterizing the GISSMO damage and failure model for high strength AA6000 series aluminium alloys using LS-DYNA®. The aim is to determine a consistent and reliable procedure for determining failure related mechanical properties of the material for use in automotive crash applications. The two approaches considered here are: a) an inverse numerical technique using LS-OPT® to solve an optimization problem and b) direct measurement of material data using specific mechanical tests and digital image correlation. The material data determined by both approaches is compared and evaluated for accuracy using the GISSMO test geometries and a comparison between shell elements and solid elements is given.