INTEGRATED ANALYSIS OF FORMING AND CRASHWORTHINESS OF HIGH STRENGTH ALUMINIUM BUMPERS USING LS-DYNA
The front and rear bumper beams are important parts of the overall safety system of modern cars. Due to aluminium's high strength to weight ratio, bumper beams made of extruded aluminium profiles have become an attractive contribution to the car manufacturers’ constant strive for reducing the weight of their cars. In order to meet the various demands with respect to weight, strength, functionality, packaging , etc., a significant degree of complex forming after extrusion is normally required. As a leading supplier of high strength aluminium bumpers, Hydro Automotive Structures have for several year been using advanced FE tools in their product and process development. However, due to the close link between crash performance and geometrical shape of the bumper, the need for a tighter integration between process and product simulations has been realised. The present paper shows examples of how such integrated analyses are carried out in an industrial context as well as some results indicating the clear benefits of such an approach.
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INTEGRATED ANALYSIS OF FORMING AND CRASHWORTHINESS OF HIGH STRENGTH ALUMINIUM BUMPERS USING LS-DYNA
The front and rear bumper beams are important parts of the overall safety system of modern cars. Due to aluminium's high strength to weight ratio, bumper beams made of extruded aluminium profiles have become an attractive contribution to the car manufacturers’ constant strive for reducing the weight of their cars. In order to meet the various demands with respect to weight, strength, functionality, packaging , etc., a significant degree of complex forming after extrusion is normally required. As a leading supplier of high strength aluminium bumpers, Hydro Automotive Structures have for several year been using advanced FE tools in their product and process development. However, due to the close link between crash performance and geometrical shape of the bumper, the need for a tighter integration between process and product simulations has been realised. The present paper shows examples of how such integrated analyses are carried out in an industrial context as well as some results indicating the clear benefits of such an approach.
50.pdf
— 2.1 MB
