Simplified truck chassis modelling and crashworthiness analysis

Abstract

In this paper, a simplified model is developed for a truck chassis, which is comprised of beam and spring elements and can be used for crashworthiness analyses. In the simplified model, non-linear spring elements are used to simulate the bending and collapse behaviour of thin-walled structures of the truck chassis. These non-linear spring elements are created based on bending and collapse theories of thin-walled beams. Equivalent beams are applied to model the transverse plate components in the truck chasses. After completion, both detailed and simplified models are used for crashworthiness analyses, and the results are recorded and compared. Relatively good agreement is achieved through these analyses, while computer time is significantly reduced and modelling labour is remarkably saved by using the developed simplified model.