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本文利用Ｅｓｈｅｌｂｙ－Ｍｏｒｉ－Ｔａｎａｋａ法和改进的刚度平均化方法，考虑各种编织参数下纤维与微裂纹的相互作用，理论预报了复合材料的有效热膨胀系数，比较了不同微裂纹密度对热力学性能的影响，为工程设计和材料工艺改进提供了理论指导。
In this paper, the Eshelby-Mori-Tanaka method and the improved method of stiffness averaging are used to study the interaction between fibers and microcracks under various braiding parameters. The effective thermal expansion coefficients of the composites are theoretically predicted. The effects of different microcrack density on the thermodynamic properties Influence, provide theoretical guidance for engineering design and material process improvement.