Elastic properties and strength criterion of reinforced composite

Abstract

Woven composite materials are increasingly being used in various fields of modern technology. Unlike composites reinforced with straight fibers, they have a higher shear stress loading strength and improved impact strength characteristics. Woven composites have good technological properties. Blanks with carbon or glass fabrics are well laid out on tooling in the manufacture of thin-walled structural elements of complex shapes. The technological advantages of woven composite materials have determined the economic feasibility of their widespread use in the aviation industry and the automotive industry. The paper presents a numerical method for identifying the elastic and strength characteristics of woven carbon fiber based on the results of a micromechanical analysis of a representative volume based on the known properties of the matrix and fibers. Numerical experiments on uniaxial tension in the x, y, and z axes directions have been carried out. Modeled shift in three coordinate planes. The strength characteristics of the representative volume of the composite under conditions of tension and compression in three directions, shifts in three planes, and three biaxial tensions are determined.