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以超高分子量聚乙烯(UHMW-PE)纤维织物增强-聚乙烯(PE)涂层柔性复合材料作为研究对象,首先,通过离子抛光仪对复合材料横截面进行处理;然后,使用SEM和光学显微镜测量复合材料细观结构,获得复合材料细观几何参数;最后,基于均匀化方法和连续介质假设,建立单胞力学模型,计算单胞的拉伸载荷-应变曲线,将理论值与实验值进行比较。结果表明:基于多尺度方法的复合材料单胞力学模型所得拉伸载荷-应变曲线与实验所得曲线能较好吻合,该理论模型能够较好地预报纤维织物增强柔性复合材料的拉伸模量。
The UHMW-PE fiber-reinforced composite (PE) -coated flexible composite was taken as the research object. Firstly, the composite cross-section was treated by ion polisher. Then, The mesostructural parameters of the composite were measured. Finally, based on the homogenization method and the continuum assumption, the uniaxial mechanical model was established and the tensile load-strain curve of the unit cell was calculated. The theoretical and experimental values were calculated Compare The results show that the tensile load-strain curve obtained by the multi-scale method is in good agreement with the experimental curve. The theoretical model can predict the tensile modulus of the fiber-reinforced flexible composite.