Method for predicting macroscopic mechanical properties of fiber reinforced composite material

The invention belongs to the field of multi-scale mechanical analysis of composite materials, and particularly relates to a method for predicting macroscopic mechanical properties of a fiber reinforced composite material. Comprising the steps that 1, a representative volume element, namely RVE, is taken from the fiber reinforced composite material, stress is applied in the second direction, namely the y direction of a coordinate system, and fiber strain and matrix strain of fibers and a matrix in the second direction are calculated; 2, according to the actual deformation of the fiber matrix, a deformation coordination plane and a tensile deformation coordination factor alpha are introduced into a deformation area, the real strain of the fiber matrix during loading in the two directions is calculated, and then the real macroscopic elastic modulus in the two directions is solved; and 3, introducing shear deformation coordination factors beta and gamma, and solving the macroscopic shear modulus. 本发明属于复合材料多尺度力学分析