A possible competitor to the corrugated sheet and frame construction may be a sandwich panel structure. To reduce computational effort, and enable fast parameter studies of the entire rail car, the original FE model has to be reduced.Īnother goal of this exercise is to find a more efficient substitution to the existing structure (efficient here meaning lighter with the same mechanical properties). It is designed of corrugated sheet metal and a metal framework as the load carrying structure. The specific construction studied in this paper is the structural floor of a rail vehicle. Furthermore, a 3-dimensional corrugated sheet model is used as a reference. These expressions are here benchmarked against each other with finite element analysis (FEA) in extension, modal analysis, checking both frequency and mode shape, and buckling analysis. have derived analytical expressions for the extensional and flexural rigidities of a corrugated sheet. Samanta and Mukhopadhyay, Briassoulis, and Liew et al.
To reduce the required amount of elements, 2-dimensional, orthotropic models may be used to represent the properties of a corrugated sheet. Modeling corrugated sheets using the finite element method (FEM) usually requires an extensive amount of elements. Keeping in mind the presented limitation, the orthotropic model presented herein can be used to drastically reduce the number of elements needed when modelling corrugated sheet with finite elements. The stiffened direction of the corrugated sheet best matches Sheet however, the orthotropic models do not give an accurate twistingīehavior.
Good similarity is shown in the stiffened and transverse direction of the corrugated Analytical expressions for the mechanical properties are studied and compared to finiteĮlement calculations in extension, free vibration, and buckling. To reduce computational effort of finite element (FE) calculations aĬorrugated sheet is replaced with an orthotropic plate.
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