| 某型飞机平尾轴疲劳断裂失效分析 |
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| 引用本文： | 刘开亮,朱有利,李占明,黄元林,王智.某型飞机平尾轴疲劳断裂失效分析[J].装甲兵工程学院学报,2012,26(4):83-85. |
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| 作者姓名： | 刘开亮 朱有利 李占明 黄元林 王智 |
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| 作者单位： | 1. 装甲兵工程学院装备再制造工程系,北京,100072
2. 空军装备研究院航空装备研究所,北京,100076 |
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| 摘 要： | 采用台架试验装置对某型飞机平尾轴进行了疲劳试验，通过断口的观察分析、断口部位的金相分析、硬度检测、有限元结构应力分析，确定了平尾轴的失效模式，并对其断裂失效原因进行了分析。结果表明：平尾轴的断裂性质为疲劳断裂，裂纹源均起源于大轴简体内壁加工刀痕形成的沟槽处，变截面圆弧造成的结构应力集中和粗糙加工刀痕形成的附加应力集中是造成大轴疲劳断裂的主要原因。关键词：平尾轴；疲劳断裂；失效分析；应力集中
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| 关 键 词： | 平尾轴 疲劳断裂 失效分析 应力集中 |
Fatigue Fracture Failure Analysis of a Horizontal Stabilizer Shaft |
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| LIU Kai-liang,ZHU You-li,LI Zhan-ming,HUANG Yuan-lin,WANG Zhi.Fatigue Fracture Failure Analysis of a Horizontal Stabilizer Shaft[J].Journal of Armored Force Engineering Institute,2012,26(4):83-85. |
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| Authors: | LIU Kai-liang ZHU You-li LI Zhan-ming HUANG Yuan-lin WANG Zhi |
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| Institution: | 1. Department of Equipment Remanufacture Engineering, Academy of Armored Force Engineering, Beijing 100072,China： 2. Institute of Aviation Equipment, Air Force Armament Research Institute, Beijing 100076, China) |
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| Abstract: | A platform experimental device is adopted to conduct the fatigue test on a horizontal stabilizer shaft. The failure mode of the shaft is determined by fracture surface examination, metallographic analysis, hardness testing and finite element analysis, and the causes of failure and fracture are analyzed. The results show that the fracture mode of the shaft is fatigue fracture, all the cracks initiated from the groove resulted from the machining marks of the inner wall surface, structural stress concentration resulted from varied section arc and additive structural stress concentration resulted from the machining marks are main causes for the fatigue fracture. |
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| Keywords: | horizontal stabilizer shaft fatigue fracture failure analysis stress concentration |
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