Title: Dynamic FE-based method for concept modelling of vehicle beam-like structures
Authors: De Gaetano, Giovanni
Cosco, Francesco
Maletta, Carmine
Mundo, Domenico
Donders, Stijn #
Issue Date: 2012
Host Document: ISMA2012 pages:3725-3736
Conference: International Conference on Noise and Vibration Engineering date:17-19 September, 2012
Abstract: Vehicle body structures are characterized by load-carrying thin-walled beam-members, typically formed by spot-welded panels, with sections variations and discontinuities that highly influence both the static and the dynamic behaviour of the entire structure. Vehicle body concept modelling is an active field of research. Different methodologies are available, either based on the geometric analysis of the spatial mass distribution at each relevant cross-section or on static finite element (FE) based characterization of the beam properties. This paper presents a new methodology for estimating the cross-section properties of automotive structures with a beam-like behaviour. It is based on a dynamic FE approach, which allows estimating the stiffness characteristics (e.g. quadratic moments of inertia, torsional modulus, etc.) of equivalent 1D beam elements, using the natural frequencies estimated by means of a modal analysis on the original 3D FE model of the structure. The proposed method has been validated through an application case, comprising the analysis of a thin-walled beam with double-symmetric cross-section, formed by two spot-welded panels.
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Non-KU Leuven Association publications
# (joint) last author

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