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Modeling of Bolts using the GISSMO Model for Crash Analysis

The prediction accuracy of bolted connections is becoming increasingly important in the automotive sector. The requirements and thus the vehicle architectures are changing due to the electrification of vehicles and the high weight of batteries as well as their low permissible intrusion depth. Bolts are required as detachable fasteners to connect batteries with the body in white. The energy absorption concepts of vehicles with internal combustion engines have been continuously developed over the past decades. Thanks to many years of experience, the bolt connection behavior and load transfer are well known. Energy absorption concepts for electrically powered vehicles are in a comparatively early development phase. For the evaluation and further development of new crash concepts, a reliable simulation method is a basic requirement to predict joint failure in bolted connections.