Progress in Numerical Simulation of theMacroscopic and Micromechanical Behavior of 2.5D Fabric Reinforced Composites

2.5D fabricreinforced composites are new advanced composites with high specific strength, high specific modulus, good structural integrity and excellent performance designability. The micromechanical finite element method is an important calculation method for quantitatively studying the macroscopic and micromechanical behavior and failure mechanism of 2.5D fabric reinforced composites. In this paper, the research progress in the micromechanical modeling and numerical simulation of 2.5D fabric reinforced composites are summarized and reviewed. Firstly, the characteristics and applicability of various mesoscopic structure models established for 2.5D fabric reinforced composites are analyzed. The advantages and disadvantages of these mesoscopic structure models with different cross-section of fiber bundle are discussed particularly. Secondly, the researches on calculation of the mechanical properties of 2.5D fabric reinforced composites based on multi-scale computation method are reviewed. The problems and shortcomings existed in numerical simulation of damage evolution and failure behaviors of these composites are pointed out in special. Simultaneously, a few comments on investigation of numerical simulation of mechanical and failure behavior of these composites are proposed.