基于RVE方法的二维机织复合材料弹性性能预测

玻璃钢/复合材料 ›› 2019, Vol. 0 ›› Issue (6): 64-72.

基于RVE方法的二维机织复合材料弹性性能预测

赖卫清^1,2, 王秀梅^1,2*, 辛亮亮^1,2, 耿舒东^1,2

1.上海大学机电工程与自动化学院,上海200444;
2.上海大学安全断裂分析研究室,上海200444

收稿日期:2018-09-04 出版日期:2019-06-25 发布日期:2019-06-28
通讯作者: 王秀梅(1972-),女,博士,副研究员,主要从事计算力学方面的研究,wangxm@shu.edu.cn。
作者简介:赖卫清(1992-),男,硕士,主要从事复合材料方面的研究。

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

LAI Wei-qing^1,2, WANG Xiu-mei^1,2*, XIN Liang-liang^1,2, GENG Shu-dong^1,2

1.School of Mechanical and Electrical Engineering and Automation,Shanghai University, Shanghai 200444, China;
2.Safety Fracture Analysis Laboratory, Shanghai University, Shanghai 200444, China

Received:2018-09-04 Online:2019-06-25 Published:2019-06-28

摘要/Abstract

摘要： 为了预测二维机织复合材料的弹性性能,基于代表性体积单元(RVE)方法,分别建立了二维机织复合材料的细观结构理论计算模型及有限元分析模型。考虑到经纬纤维束间的挤压变形及其交织点处的间隙厚度,引入变形因子k建立修正的二维机织复合材料的细观几何模型;基于修正的几何模型,给出两种模型下宏观弹性常数的计算方法。结果表明:采用理论计算模型、有限元分析模型计算出的宏观弹性常数与试验值的最大误差分别为3.89%、9.18%;证明了修正模型的合理性以及理论计算模型、有限元分析模型的正确性,为探究二维机织复合材料的细观力学性能奠定了基础。

关键词: 二维机织, 弹性性能, 代表性体积单元, 弹性常数, 细观力学

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

中图分类号:

TB332

赖卫清, 王秀梅, 辛亮亮, 耿舒东. 基于RVE方法的二维机织复合材料弹性性能预测[J]. 玻璃钢/复合材料, 2019, 0(6): 64-72.

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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