STATIC ANALYSIS OF CORRUGATED PLATE MADE COMPOSITE MATERIAL BASED ON THE EQUIVALENT ORTHOGONAL PLATE MODEL

Abstract

Folding plates with wavy shapes made of composite materials have been widely applied, hence designing this type of structure is significant in practice. In this research work, the results of static calculation of the sinusoidal corrugated composite plates will be analyzed. Instead of calculating the displacements on the actual corrugated plate, it can be analytically obtained from the equivalent orthogonal plate. Both bending and membrane stiffness constants are equivalently converted according to the suggestion of the early researcher in the literature. The displacements given by the analytical method on the equivalent plate are compared with those resulting from the finite element method on the real sinusoidal corrugated plate. The results show that the difference in the values of displacements along the x and y directions of the center between the two methods is small. The maximum relative error is 7.33%. From this, it can be seen that the proposed model can be extended to static as well as dynamic calculations for corrugated plates with trapezoidal, triangular shapes, or can be applied to calculate the natural frequency of the corrugated plate on an equivalent orthogonal flat plate.