A study on vehicle body concept modelling: beam to joint connection and size optimization of beam-like structures

De Gaetano, G.; Mundo, D.; Vena, G.; Kroiss, M.; Cremers, L.
ABSTRACT: Vehicle concept modelling aims at providing engineers with various methodologies, in order to define a concept model of automotive Body-In-White (BIW), so that static and dynamic performances can be predicted and improved in the earliest phases of the vehicle design process. In the reduction process of a Finite Element (FE) vehicle model, a very important role is played by the design of connection between hybrid structures, like detailed shell joints and concept 1D beam elements, in the zone of interfacing cross-sections. Such connection must ensure an accurate interpolation of peripheral cross-section nodal displacements, in order to obtain consistent displacements and rotations of the beam central node. In this paper, a new connection element is validated, with an application on a partially conceptualized BIW model. The proposed element proves able to overcome the limitations of standard connection elements and to achieve a more accurate concept model of the BIW. Concept beam elements are then subject to a size optimization, in order to achieve in a very short time an optimized structure with minimum weight, having the same dynamic functional performances of the original BIW model.

26th International Conference on Noise and Vibration Engineering - ISMA 2014, Leuven (Belgium), September 15-17 , 2014 Back to Publication List

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