复合材料预紧力齿连接件剪切疲劳试验研究  

EXPERIMENTAL STUDY ON SHEAR FATIGUE PERFORMANCE OF COMPOSITE PRE-TIGHTENING TOOTH CONNECTOR

作　　者：高建岗[1] 刘鹏飞[2] 赵启林[2] 柳锦春[1] 

机构地区：[1]解放军理工大学爆炸冲击防灾减灾国家重点实验室,南京210007 [2]解放军理工大学野战工程学院,南京210007

出　　处：《玻璃钢／复合材料》2015年第8期25-30,共6页Fiber Reinforced Plastics/Composites

基　　金：国家自然科学基金(11372355);国家973计划资助项目(2012CB026202)

摘　　要：研究表明复合材料预紧力齿连接接头具有良好的静力性能,但对其在循环载荷作用下的疲劳性能还没有深入研究。主要针对不同预紧力下的接头进行了大量疲劳试验,首先通过对试验结果的分析,讨论了预紧力对接头疲劳寿命的影响规律;然后分析了滞回曲线的变化规律,探讨了滞回曲线与接头疲劳损伤累积的关系;最后通过对试件疲劳断口的观察和分析,初步探究了接头的疲劳破坏机理。Previous study shows that composite pre-tightening tooth connector has a good static performance, but the fatigue performance under cyclic loading had never been deeply investigated. This article conducted a lot of fatigue tests under different pre-tightening force. First of all, through the analysis of experimental results, the effect on fatigue life of pre-tightening was discussed. Then, the changing rule of the hysteresis curves was analyzed, and the relationship between hysteretic curve and the fatigue damage accumulation was discussed. At last, based on the observation and analysis of the specimen fatigue fracture, the fatigue failure mechanism of pre-tightening tooth connector was explored.

关 键 词：复合材料 预紧力齿连接 疲劳 滞回曲线 

分 类 号：TB332[一般工业技术—材料科学与工程]