Abstract
The orthotropic materials are of a great importance and interest in fields of the modern industrial technologies applications due to their hardness, their lightness and their super elasticity. During their operation period and under the effect of an external effort, these materials can be submitted to cracks or ruptures which can cause the disaster of their structure. In order to avoid these types of problems, the analysis of these materials is necessary. This analysis is based essentially on the internal structure of an orthotropic material, its geometry, its boundary conditions and its external applied conditions. The analysis of the static behavior of a thin orthotropic bi-dimensional plate under the effect of external efforts is treated. The analytical method is used. For modern technologic needs, a good knowledge of the structure vibratory behavior is necessary in the design. Thus, a bibliographic research of multilayer plates made from composite materials and the theory of linear elasticity are discussed. Then, static analysis of the multilayer plates under the effect of a constant force located at the center is studied in order to find the displacement at this point. Parametric study is also treated.