编织结构三维仿真及其对C/SiC复合材料性能的影响  

Fiber fabric 3D simulation and influence on properties of C/SiC composites

作　　者：周新贵[1] 游宇[1] 张长瑞[1] 黄伯云[2] 刘学业[1] 

机构地区：[1]国防科技大学航天与材料工程学院新型陶瓷纤维及其复合材料国防科技重点实验室,湖南长沙410073 [2]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2007年第2期200-205,共6页Journal of Central South University:Science and Technology

基　　金：国家高技术研究发展计划资助项目(2002AA305102);国防预研资助项目(41312011002)

摘　　要：以连续碳纤维增强的碳化硅复合材料为研究对象,利用计算机仿真技术实现了纤维预制体结构的三维仿真;同时采用CVD+PIP联合工艺制备了2.5D与三维四向2种结构的C/SiC复合材料,研究了预制体结构与复合材料力学性能之间的关系。结果表明:三维四向编织结构C/SiC复合材料的x向弯曲强度达到399.2 MPa,层间剪切强度达到38.1 MPa,断裂韧性达到16.0 MPa.m1/2,各项力学性能均高于2.5D编织结构的C/SiC复合材料的力学性能。The continuous carbon fiber reinforced silicon carbide （C/SiC） composites were studied, and the fiber fabric 3D simulation software developed. The 2.5D fiber fabric and 3D4Dr fiber fabric C/SiC composites were fabricated by the combination process of CVD and PIP, and the relationship of fiber fabric to the property of composites were studied. The results show that the x direction bending strength, shear strength and fracture toughness of C/SiC composites with 3D4Dr fiber fabric reach 399.2 MPa, 38.1 MPa and 16.0 MPa·m1/2, respectively, which are better than those of the composites with 2.5D fiber fabric.

关 键 词：编织结构 C/SIC复合材料 结构仿真 力学性能 

分 类 号：TB323[一般工业技术—材料科学与工程]