Finite Element Analysis Of Free And Transient Vibration In Sandwich Folded Plates
A 9-noded Lagrangian plate bending finite element that incorporates first-order transverse shear deformation and rotary inertia is used to predict the free and forced vibration response of sandwich folded plate structures. A 6 x 6 transformation matrix is applied to transform the system element matrices before assembly. An additional drilling degree of freedom is appended with the usual five degrees-of-freedom per node to use the transformation. The finite element results presented here show good agreement with the available semi-analytical solutions and finite element results. Parametric studies are presented for free and forced vibration response for sandwich folded plates, with reference to crank angle and different boundary conditions.
Keywordsandwich folded plate finite element method
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