The current paper deals with numerical modelling of all plywood sandwich panels with rib-stiffened core. Commercially available finite elements code ANSYS has been implemented to simulate mechanical behaviour of sandwich panels in bending, according to the EN 789 standard. It has been confirmed that in order to simulate plywood a multilayered panel model with shell type elements could adequately represent the mechanical behaviour of such a structure sufficiently well. Developed parametrical model has been initially validated with experimental results showing less than 10 % scatter among finite element model and physical model. Following this a validated numerical model has been implemented for structural parameter optimization resulting in significant improvement of initial panel design
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