THE INFLUENCE OF MICROSTRUCTURE OF 3D ANGLE-INTERLOCK WOVEN COMPOSITE ON THE FATIGUE BEHAVIOR UNDER THREE-POINT BENDING

Abstract

Abstract: This paper presents the finite element simulation of 3D angle-interlock woven composite(3DAWC) undergoing three-point bending cyclic loading. The finite element solid model was built in accordance with the real structure of layer-to-layer 3DAWC. Based on inelastic hysteresis energy fatigue damage criterion, deformation and stiffness degradation of 3DAWC under three-point bending cyclic loading were caculated by FEM. The interior deformation and stress distribution characterisics of 3DAWC during the fatigue process were anaylsed and it was found that the most of the load was carried by warp yarns.The different failure mechanisms of yarns and resin were also discussed and the influence of microstructure was discovered. The results and research method can be applied to engineering structure design of 3D woven composite.

Key words: 3DAWC, three-point bending, fatigue, structural effect, FEA

CLC Number:

TB332

YANG Ge, PAN Zhong-xian. THE INFLUENCE OF MICROSTRUCTURE OF 3D ANGLE-INTERLOCK WOVEN COMPOSITE ON THE FATIGUE BEHAVIOR UNDER THREE-POINT BENDING[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(3): 13-17.

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