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通过将细观力学的Ｅｓｈｅｌｂｙ和Ｍｏｒｉ－Ｔａｎａｋａ理论与刚度平均化方法相结合，对含定向基体微裂纹的三维编织复合材料热膨胀系数进行了理论计算，分析了纤维体积含量，微裂纹密度和编织参数变化对热膨胀系数的影响，为材料设计和应用提供了理论基础。
The thermal expansion coefficient of the three-dimensional braided composites with oriented matrix microcracks was calculated theoretically by combining the Meshelical Eshelby and Mori-Tanaka theory with the stiffness averaging method. The fiber volume content, microcrack density and braid parameters The influence of the change on the thermal expansion coefficient provides the theoretical basis for the design and application of materials.