DETERMINATION OF MECHANICAL PROPERTIES OF COMPOSITE MATERIALS OF WOVEN STRUCTURES BASED ON FINITE ELEMENT MODELING

Abstract

This paper is devoted to the three-dimensional modeling of the representative volume of a composite weave of the weave type, using the finite element method. The use of this type of material is due to the fact that the material has a fairly uniform distribution of the structure in the reinforcement plane, has sufficient resistance to damage, and is also simple in production. The paper considers single layer of material periodic regular weave pattern, the effective mechanical properties which may be described in terms transversally isotropic material. The woven composite fiber is a bundle of fiberglass yarns connected by a single matrix, therefore it is considered as an anisotropic material having an isotropy plane perpendicular to the axis of the fiber. As a result of the work, matrices of effective elastic constants of representative volumes of an elementary periodic cell were obtained for various fiber modeling methods (isotropic and anisotropic materials), the dependence of these characteristics on the volume ratio of the components of the composite was found, the adhesion interaction between fiber and matrix was modeled. The influence of the degree of damage to the connectivity of the components of the woven composite on the effective elastic characteristics of a representative volume is determined.