Comportement en rupture des matériaux composites stratifiés sollicités à différentes charges

Abstract

Following an alliance between fiber reinforcement (glass, boron and graphite) and a binder (epoxy resin), the composite material offers new possibilities in the field of transportation and aerospace. With its extremely lower density than that of the metal, this material is characterized by better strength properties to the pressure and corrosion. In recent years, advances in numerical simulation led to significant developments in the study of composite materials and their mechanical modeling. At present time, the control of mechanical behavior of composite materials and structures under static and dynamic loads, is a vast and complex field in research. The modeling of various physical phenomena characteristic of the behavior of a composite material during deformation plays an important role in the design of structures. Our study aims is to analyze numerically the rate of energy release of laminated composite plates of glass and boron with an epoxy matrix [+ α, -α], in the presence of a crack between two circular notches, for several parameters such as the fiber orientation, the position and size of the crack and the considered position of the two circular notches on one hand and on the other hand under the effect of a dynamic loading (impact) in terms of the speed and the fibers orientation, and this for the same glass / epoxy plate.