【摘要】 基于碳纳米管的热膨胀系数及弹性模量分别为温度变化的函数,基体的热、湿膨胀系数及弹性模量分别为温度变化和湿度变化的函数,应用连续介质力学的经典弹性壳理论及传统纤维拉拔模型,分析了湿热环境对碳纳米管复合材料界面应力传递的影响。数值计算表明,湿度、温度的效应及碳纳米管的层数等参数对界面应力的传递均有显著影响。更多还原

【Abstract】 Considering the thermal expansion coefficient and elastic modulus of CNTs(carbon nanotubes)as functions of temperature,and the coefficient of thermal expansion,coefficient of moisture expansion and elastic modulus of matrix as functions of temperature and moisture,the effects of hygrothermal environment on interfacial stress transfer of CNT composites are investigated using classical elastic shell theory and conventional fiber pullout models.Numerical examples show that the interfacial shear stress transfer behavior can be obviously affected by several parameters such as temperature,moisture and CNT layer numbers.更多还原