Shearing Low-Cycle Fatigue Test and Life Prediction of the Aluminum Alloy Bolted Connection

被引：0
作者：
Liu H. [1 ,2 ]
Ma J. [2 ]
Han R. [2 ]
Chen K. [3 ]
机构：
[1] Key Laboratory of Coast Civil Structure and Safety of Ministry of Education, Tianjin University, Tianjin
[2] School of Civil Engineering, Tianjin University, Tianjin
[3] Architectural of Design and Research Institute, Tianjin University, Tianjin
来源：
Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/Journal of Tianjin University Science and Technology | 2019年 / 52卷
关键词：
Aluminum alloy plate joint; Fatigue life; Low-cycle fatigue test; S-N curve; Shear resistance;
D O I：
10.11784/tdxbz201904081
中图分类号：
学科分类号：
摘要：
A low-cycle reciprocating fatigue test was conducted on aluminum alloy plate bolt connection joints, extensively used in civil engineering. Loaded with different stress amplitudes, the load-deformation curves of ten connecting specimens were obtained. The failure modes of the joints under reciprocating loading were analyzed, and the S-N curve was generated for the fatigue life estimation. The results showed that under a reciprocating load role, the failure of the aluminum alloy bolt joint plate is presented as a shearing out of the bolt between two plates. There was a brittle fracture with no outward signs. Due to the certain gap between the bolt rod and the hole wall, the load-displacement curve was bow-shaped and anti-S-shaped, indicating the existence of shear slip. As the control stress was reduced, the number of cycles increased exponentially. With increasing cyclic number, fatigue damage accumulated, leading to an increase in displacement amplitude. © 2019, Editorial Board of Journal of Tianjin University(Science and Technology). All right reserved.
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页码：142 / 147
页数：5
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