PREDICTION OF ELASTIC PROPERTIES OF 2D WOVEN COMPOSITES BASED ON RVE METHOD

Abstract

Abstract: In order to predict the elastic properties of 2D woven composites, based on the representative volume element (RVE) method, the mesostructured theoretical calculation model and the finite element analysis model of the 2D woven composites were established. Firstly, considering the extrusion deformation between the warp and weft fiber yarns and the gap thickness at the interlacing point, the deformation factor k is introduced to establish a modified mesoscopic geometric model of the two-dimensional woven composite material. Based on the corrected geometric model, the calculation method of macroscopic elastic constant under two models is given. The results show that the maximum errors of macroscopic elastic constants between experimental values and values calculated by the theoretical calculation model was 3.89%, while the maximum errors of macroscopic elastic constants between experimental values and values calculated by finite element analysis model was 9.18%, respectively. The rationality of the corrected model and the correctness of the theoretical calculation model and the finite element analysis model were proved, which laid the foundation for exploring the meso-mechanical properties of 2D woven composites.

Key words: 2D woven, elastic performance, RVE, elastic constants, meso-mechanics

CLC Number:

TB332

LAI Wei-qing, WANG Xiu-mei, XIN Liang-liang, GENG Shu-dong. PREDICTION OF ELASTIC PROPERTIES OF 2D WOVEN COMPOSITES BASED ON RVE METHOD[J]. Fiber Reinforced Plastics/Composites, 2019, 0(6): 64-72.

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