A sine finite element using a zig-zag function for the analysis of laminated composite beams

This study aims at determining the influence of an additional zig-zag function in the Sine model for static and vibration analysis. In this way, mechanical tests for thin/thick laminated and sandwich beams are presented in order to evaluate the capability of this finite element. The results are compared with elasticity or finite element reference solutions in statics and vibration. Both convergence velocity and accuracy are discussed. This finite element yields satisfactory results at a low computational cost.