压接式复合绝缘子接头处的破坏分析  

Failure Analysis of Connector of Crimp-style Composite Insulator

作　　者：余涛[1] 杨新华[1] 

机构地区：[1]华中科技大学土木工程与力学学院,湖北武汉430074

出　　处：《水电能源科学》2010年第10期139-141,共3页Water Resources and Power

摘　　要：基于力学原理,探讨了压接式复合绝缘子不同工况荷载下接头处的破坏形式和机理。结果表明,拉弯荷载的组合作用,绝缘子最大应力出现于芯棒压接区边缘外表受拉一侧,压接区的强度易破坏,且滑脱极限应力远低于芯棒轴向拉伸强度,金具滑脱是绝缘子破坏的主要形式。Based on the basic principles of mechanics,the mode and mechanism of failure are discussed on the connector of crimp-style composite insulators at different load conditions.The results show that combination of stretching and bending load on the insulator causes that the maximum stress appears in the tension side of crimp area,where strength failure occurs easily;in addition,fitting slippage is the main form of insulator failure as the ultimate stress of slippage is much lower than the axial tensile strength of composite insulator.

关 键 词：压接式 复合绝缘子 下接头 破坏分析 轴向拉伸强度 最大应力 组合作用 破坏形式 芯棒 力学原理 极限应力 滑脱 拉弯 金具 结果 机理 荷载 工况 

分 类 号：TK79[动力工程及工程热物理—流体机械及工程] TV7[水利工程—水利水电工程]