Zhao Anan, Zhang Yongliang, Zhu Chunrun, Zhong Zhengwei, Bi Yunbo
State Key Laboratory of Fluid Power and Mechatronic System, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China.
Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China.
Materials (Basel). 2021 Sep 7;14(18):5127. doi: 10.3390/ma14185127.
Riveting is widely used in aircraft manufacturing. The strap butt joint is often used in the aircraft's main bearing area such as the aircraft docking area. The connection quality affects the reliability and safety of the aircraft directly. To study the effect of the rivet position on the connection quality of the strap butt joints, this paper analyzed the distribution of stress around the rivet hole at different positions by the finite element method, and then further analyzed the influence of the different rivet layouts on the connection quality of the strap butt joints by experiments. The static load tensile failure test of the joints was carried out, and the obtained tensile strength and failure mode of the strap butt joints showed that the main static tensile failure form of the single strap butt joint is that the whole rivets is sheared and the connecting sheets are separated. By changing the layout of different rivets, the connection strength can be maximized by reducing the outer row spacing (ORSD) of rivets. The results can be used for reference in the design of the riveting structure of aircraft panels.
铆接在飞机制造中广泛应用。搭接对接接头常用于飞机对接区域等飞机主承力部位。其连接质量直接影响飞机的可靠性与安全性。为研究铆钉位置对搭接对接接头连接质量的影响，本文采用有限元方法分析了不同位置铆钉孔周围的应力分布，进而通过试验进一步分析了不同铆钉布局对搭接对接接头连接质量的影响。对接头进行了静载拉伸破坏试验，所得到的搭接对接接头的拉伸强度和破坏模式表明，单搭接对接接头主要的静载拉伸破坏形式是全部铆钉被剪断且连接板分离。通过改变不同铆钉的布局，减小铆钉的外排间距（ORSD）可使连接强度最大化。研究结果可为飞机蒙皮铆接结构设计提供参考。
