交变载荷作用下纤维增强密封复合材料界面脱黏研究

复合材料科学与工程 ›› 2014, Vol. 0 ›› Issue (10): 16-20.

交变载荷作用下纤维增强密封复合材料界面脱黏研究

吴登科, 顾伯勤^*

南京工业大学机械与动力工程学院,江苏南京210009

收稿日期:2014-05-10 出版日期:2014-10-28 发布日期:2021-09-16
通讯作者: 顾伯勤,教授,bqgu@njtech.edu.cn。
作者简介:吴登科(1987-),男,硕士,主要研究密封复合材料界面特性。
基金资助:
国家自然科学基金资助项目(51375223)

THE RESEARCH ON THE INTERFACIAL DEBONDING OF FIBER-REINFORCED SEALING COMPOSITE SUBJECTED TO ALTERNATING LOAD

WU Deng-ke, GU Bo-qin^*

College of Mechanical and Power Engineering, Nanjing Tech University, Nanjing 210009, China

Received:2014-05-10 Online:2014-10-28 Published:2021-09-16

摘要/Abstract

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。

关键词: 界面脱黏, 复合材料, 裂纹扩展, 疲劳, 交变载荷

Abstract: The interfacial debonding is the major form of interface failure of fiber-reinforced sealing composites, which can be 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.

Key words: interfacial debonding, composite, crack growth, fatigue, alternating load

中图分类号:

TB332

吴登科, 顾伯勤. 交变载荷作用下纤维增强密封复合材料界面脱黏研究[J]. 复合材料科学与工程, 2014, 0(10): 16-20.

WU Deng-ke, GU Bo-qin. THE RESEARCH ON THE INTERFACIAL DEBONDING OF FIBER-REINFORCED SEALING COMPOSITE SUBJECTED TO ALTERNATING LOAD[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(10): 16-20.

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