摘要
对于纤维复合材料,传统剪滞理论没有考虑基体轴向应变的影响,导致无法反映基体在应力传递中的作用。通过对剪滞理论的改进,解决了上述问题,推导了纤维轴向应力、纤维轴向变形、基体轴向应力、基体轴向变形、纤维/基体界面剪应力、纤维/基体相对滑移量的分布公式,分析了界面弹性模量对应力传递机制的影响,结果符合现有研究成果。经与有限元分析结果对比,验证了改进理论的合理性。
For fibrous composites,the traditional shear lag theory cannot reflect the role of the matrix in stress transfer as it neglect the influence of axial strain of the matrix.Thus,the shear lag theory is improved to solve this problem.The distributions of the fiber axial stress,fiber axial deformation,matrix axial stress,matrix axial deformation,shear stress of the fiber-matrix interface,and relative slip of the fiber-matrix interface are derived.The influence of the interface elastic modulus on the stress transfer mechanism is analyzed.The results are consistent with existing research findings.The rationality of the improved theory is verified by comparing with the results of finite element analysis.
作者
谷胜杰
詹程远
何吉
陈俊涛
GU Shengjie;ZHAN Chengyuan;HE Ji;CHEN Juntao(School of Water Resources and Hydropower Engineering,Wuhan University,Wuhan 430072,China;Changjiang River Scientific Research Institute,Wuhan 430010,China)
出处
《水电与新能源》
2024年第2期36-39,共4页
Hydropower and New Energy
基金
国家自然科学基金项目(52178247)。
关键词
水泥基纤维复合材料
剪滞理论
应力传递
基体变形
界面滑移
cement-based fibrous composites
shear lag theory
stress transfer
matrix deformation
interface slip
