Novas funções zig-zag de alta ordem para análise de vigas compósitas laminadas

Abstract

The concept of joining different materials to take advantage of their best properties has historically been used for the evolution of human processes. Today, there is an increase in the variety of products and industrial processes which require the use of specific and efficient materials. Therefore, the study of composite materials becomes important and, as they are more complex, they need their own theories for each specific case. Speaking of engineering, there is a large range of parts that have the structural behavior of beams and are applied in areas such as civil, mechanical, aeronautical and military engineering. Due to the need for an adequate structural behavior for each case, there are laminated composite beams that join different materials to obtain the desired results. In the present work, a comparative study of the laminated beams theories and their results was developed in order to improve the approximation of their real behavior with the lowest possible computational cost. Thus, a unified formulation of the zig-zag theory was developed with high order kinematics and high order “zig-zag functions” with new zigzag’s shapes. In addition to a study to improve the approximation in the shear field of these elements.