圆织三维管状碳纤维复合材料弹性性能预测  

Prediction of elasticity of circular woven 3-D tubular carbon fiber composites

作　　者：孙志宏[1] 陈阳[1] 周申华[1] 

机构地区：[1]东华大学机械工程学院,上海201620

出　　处：《纺织学报》2014年第9期56-61,共6页Journal of Textile Research

基　　金：科技部支撑计划项目(2011BAF08B03)

摘　　要：为给圆织复合材料的工程应用提供参考依据,建立适当的单元胞体力学模型来预测其工程弹性常数。该模型采用跑道型纤维束截面假设,基于可设计几何参数和单元胞体的组织结构,合理预测了圆织三维管状复合材料纤维体积分数和弹性常数。并采用有限元方法对该模型进行了拉伸载荷下的力学分析,合理确定了复合材料的应力分布。结果表明,采用有限元方法所得的预测值与理论计算数值具有很好的一致性,证明了细观几何模型以及弹性常数分析方法的正确性。In order to provide references for engineering application of circular woven composites, a new unit cell division method and a mechanical model were put forward to predict the engineering elastic constants. The model adopted raceway shape as the cross-section of yarns, and prediction methods of volume fractions and elastic modulus were established based on the micro structure and geometric parameters of it. Then the finite element method was used to analyze the mechanical behavior under the circumstances of axial-tensile load, and the stress state was revealed. The results showed that the predicted values using finite element method agree well with the theoretical calculation values, thus the model and analysis method of elastic constants is verified.

关 键 词：三维圆织 管状复合材料 细观结构 弹性性能 有限元 

分 类 号：TS105[轻工技术与工程—纺织工程]