柔性导向三维正交结构复合材料预制体建模研究  

Research on Modeling of 3D Orthogonal Flexible Weavon Composite Preform

作　　者：刘云志[1] 单忠德[1] 战丽[1] 李志坤[1] 

机构地区：[1]机械科学研究总院先进成形技术与装备国家重点实验室,北京100083

出　　处：《工程塑料应用》2016年第6期63-66,83,共5页Engineering Plastics Application

基　　金：国家重大科技专项(2014ZX04001-181)

摘　　要：针对碳纤维增强复合材料三维织物的表征问题,采用柔性导向三维织造技术,织造了三向正交结构复合材料预制体,根据织造工艺重复性与对称性的特点,建立了柔性导向三维正交结构预制体单元模型,并推导出织物单元体各向纤维体积含量的预测公式。然后,进行碳纤维预制体织造实验,织造了五组碳纤维三向正交结构织物,实测得到预制体中X/Y/Z三向纤维体积含量,并与建立的体积含量预测公式进行对比,证明了所建模型的适用性。最后分析了预制体纤维体积含量理论值与实测值产生偏差的原因,得出预制体中纤维束并非处于伸直状态等一系列结论。Targeting at the problem of characterization of carbon fiber reinforced composites,the 3D orthogonal structure preform was weavon by using the 3D flexible weaving techonlogy. According to the characteristics of weaving process,a 3D orthogonal structural model and prediction formulas of the volume fraction of the model were established. Then,five groups of carbon fiber fabric were manufactured to test the fiber volume fraction and the calculated values by the prediction formula were compared with the test ones. At last,the reasons which caused the difference between the theoretical values and experimental values were analyzed.

关 键 词：复合材料 碳纤维 三维正交结构 单元模型 柔性织造 纤维体积含量 

分 类 号：TB332[一般工业技术—材料科学与工程]