Study on Uniaxial Tensile Mechanical Behavior of Woven Composites Based on Local Homogenization Multi-Scale Method
The woven carbon fiber reinforced resin matrix composites have excellent specific stiffness and strength due to the interweaving of fibers in the thickness direction and the complex spatial structure of fibers.A multi-scale(microscopic,mesoscopic and macroscopic)finite element progressive damage model of woven carbon fiber reinforced resin matrix composites was established,and the components of the mesoscopic model were simplified by local homogenization with equivalent performance.The damage initiation of fiber/matrix was judged based on the micromechanical failure theory,and a user-defined subroutine VUMAT was developed to analyze the tensile mechanical behavior and damage mechanism of plain woven composites on the ABAQUS finite element analysis platform.The results show that the resin damage of the fiber yarns is the most serious in the tensile load simulation,and the fiber failure occurs in the warp fiber yarns,and the damage of the outer layer is more serious than that of the inner layer.The error of experimental and numerical analysis results is less than 2%,which indicates the reliability of the multi-scale progressive damage model.
plain weavelocal homogenizationmulti-scale progressive damage model
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