编织复合材料弹性性能的细观力学模型

提出了编织复合材料弹性性能分析的细观力学模型，这个力学模型考虑了实际编织结构中的纬向和经向纤维束的曲屈，相邻纤维束之间的间隙和纤维束的横截面尺寸对编织复合材料弹性性能的影响，并探讨了在纤维束间纯树脂区内孔隙的含量和两种叠层结构对材料弹性性能的影响．理论计算结果与实测值的比较，表明所提出的细观力学模型是合理的．根据理论分析的结果，提出了优化单层和叠层编织结构的结构参数选择方法

A MICROMECHANICAL MODEL FOR ELASTIC BEHAVIOUR ANALYSIS OF WOVEN FABRIC COMPOSITES

A micromechanical model for elastic behaviour analysis of woven fabric composites is proposed in this paper. This model takes into account the actual fabric structure by considering the fibre undulation and continuity along both the warp and weft directions, the gaps between adjacent yarns and the actual cross sectional geometry of the yarn. The effect of the voids in the interyarn space and two cases of fabric stacking arrangements to the composite elastic properties have been investigated. A comparison of the resulting analytical predictions with experimental results shows that the proposed model is valid.