综述了国内外近年来对三维编织复合材料细观结构力学模型和力学性能的研究进展.细观结构力学模型研究主要是通过分析三维编织体的拓扑结构建立力学分析模型,主要有"米"字枝状模型、纤维倾斜模型和三细胞模型.对力学性能的研究包括刚度性能和强度性能研究,刚度性能的预测分析方法有解析法、基于均匀化理论的方法和有限元数值仿真;而强度性能的预测大多采用有限元方法来进行.最后,总结了目前研究中存在的问题并对以后的工作进行了展望.
Recent developments of research on the microstructure modeling and mechanical properties of three dimensional braided composites at home and abroad are summarized in this paper. Microstructure modeling based on the yarn topology in the preform, such as " * " type model, fiber inclination model and three cell model are applied successively. Mechanical properties consist of stiffness properties and strength properties. To predict the stiffness properties, three methods are proposed: Analytical techniques, analysis method based on homogenization theory and finite element method;while the finite element method is always used to predict the strength properties. At last,some problems in present studies are summarized and work to be studied in the future is proposed.
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