摘要
对二步法方型三维编织复合材料的三维五向结构进行了真实的描述与分析。在此基础上划分出边上、角上和内部单元体。通过对复合材料的横截面以及与试件表面成 4 5°的纵切面进行观察 。
The structure of the two step rectangle 3D braided composites with five direction and three demension is truly described and analyzed. Three kinds of unit cells have been divided. According to the braiding movement rule, the axial yarns keep static in the axial direction and the braiding yarns run across along the diagonal direction at an angel of 45° with the preform surface to and fro in a proper order to bind up the axial yarns. Through surveying the cross section and the section cut longitudinally at a 45° angle with the preform surface of the composites, the true cross sections and the shapes of axial and braiding yarns are described clearly. Thereby, the volume of the deformations of axial yarns being flattened by the braiding yarns and the fiber volume fraction in the axial yarn are determined.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2002年第4期69-75,共7页
Acta Materiae Compositae Sinica
基金
国家教育部科学研究重点项目 (0 0 13 5 )
