Recent developments of investigation into mechanical properties of 3 D braided composites at home an abroad are summarized, in which the experimental, theoretical and numerical simulation research are included.The theoretical investigations present the“ *” type model, fiber inclination model, three cells model, helix fiber cell and the study on stiffness and strength. In numerical simulation research, the solid model of 3D braided composites based on forming technology, braided procedure and the course of the yarns are introduced. Finally, some problems in present studies are summarized and future investigating trends are proposed.%综述了近年来国内外对三维编织复合材料力学性能的研究进展,主要包括实验研究、理论研究和数值仿真研究.在理论研究方面介绍了"米"字枝状模型、纤维倾斜模型、三细胞模型、螺旋线模型以及基于细观结构几何模型的刚度和强度性能研究.在数值仿真研究方面介绍了研究人员根据三维编织复合材料的成型技术、编织程序和纤维在编织过程中的走向等建立的三维编织复合材料实体模型.最后,总结了目前研究中存在的问题,并对未来的研究趋势进行了展望.
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