论文部分内容阅读
建立了一种三维机织复合材料的细观力学模型。模型包括两相 :一相为纤维束 ,另一相为基体材料或横向的纤维束。该模型考虑了纤维束弯曲所引起的附加剪切。讨论了根据织造参数确定机织复合材料细观结构的方法。将上述理论用于一种实际的碳 /环氧三维机织复合材料的分析 ,研究了细观应力分布的特点 ,并用平均化方法得到了材料宏观的模量 ,分析结果与试验数据吻合良好
A micromechanical model of three-dimensional woven composite was established. The model consists of two phases: one phase is a fiber bundle and the other phase is a matrix material or a transverse fiber bundle. The model takes into account the additional shearing caused by the fiber bundle bending. The method of determining the mesostructure of woven composites based on weaving parameters is discussed. The above theory is applied to the analysis of an actual carbon / epoxy three-dimensional woven composite material, the characteristics of the meso-stress distribution are studied, and the macroscopic modulus of the material is obtained by the averaging method. The analytical results are in good agreement with the experimental data