三维编织复合材料研究进展

重点回顾了三维编织复合材料各发展阶段的关键性成果,从研究方法和研究方向两个角度,对该领域的重要研究成果和笔者所在课题组的最新研究成果进行了评述。在编织工艺方面,重点介绍了编织物的细观结构和适用领域,指出了细观结构对最大纤维体积分数的影响和当前流行的建模方法,并且将周期性单胞划分方法和纱线截面形状的模拟归纳为参数化建模中的两个关键问题。对力学性能的研究成果进行了综述,在试验方面,重点介绍了编织角的变化对材料各种性能的影响;在理论方面,重点评述了几种多尺度细观力学方法和特征单元法。最后,对有待于进一步研究的问题进行了展望。

Developments in Research on 3D Braided Composites

This article provides a review of studies about three-dimensional (3D) braided composites, focusing on the key achievements of various stages. Important developments in the field, including the latest work of our group, are discussed in terms of research method and orientation. With regard to the braided process of composites, the application of meso-structures and their influences on the maximum fiber volume fraction are revealed, and the popular modeling methods are also reviewed. Moreover, the partition schemes of periodical cells and the simulation of the fiber section patterns are viewed as the two key points in parameterized modeling. In the experimental studies, the effect of braiding angle on the mechanical properties of composites is emphasized, while in theoretical investigation, the multiscale methods and the eigenelement method are stressed. Finally, problems that deserve further studies are presented.