摘要
界面脱黏是纤维增强密封复合材料界面破坏的主要表现形式,其可视为一种特殊的裂纹扩展。本文基于剪滞模型研究了纤维增强密封复合材料中纤维和基体界面在交变载荷作用下的裂纹扩展规律。在考虑疲劳加载引起的脱黏界面损伤和损伤分布不均匀性以及材料泊松比影响的基础上,建立了等效Paris公式,得到了疲劳裂纹扩展长度、扩展速率、界面上摩擦系数和加载次数之间的关系。
which can be ： The interfacial debonding is the major form of interface failure of fiber-reinforced sealing composites, regarded as a special crack growth of interfacial debonding. Based on the shear-lag model, the interfacial crack growth regularity of fiber-reinforced sealing composites subjected to alternating loads was investigated. In consideration of the damage of debonding interface and the inhomogeneity of the damage distribution because of fatigue load as well as Poisson＇ s ratio of fibers, a equivalent Paris equation was proposed, and the relationships between some fatigue variables and number of cycles were studied, including fatigue crack growth length, crack growth rate and interfacial friction coefficient.
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2014年第10期16-20,共5页
Fiber Reinforced Plastics/Composites
基金
国家自然科学基金资助项目(51375223)
关键词
界面脱黏
复合材料
裂纹扩展
疲劳
交变载荷
interfacial debonding
composite
crack growth
fatigue
ahernating load
