Substitute Modeling for Crash Simulations

© Photo Fraunhofer IWM

A reliable and practical description of joint failure in crash simulations depends on special elements, so-called substitute models and their input data. The Fraunhofer IWM has developed a simple, efficient substitute model and a technique for determining the failure parameters for spot welds. A material model has also been implemented for modeling the failure of adhesive bonds with parameters that have been determined from substance and joint samples and calibrated for substitute modeling. The models are verified by simulating trials on spot-welded and glued, component-like samples.