Transactions of Materials and Heat Treatment

Title：Numerical simulation on core riveting for TC4 titanium alloy connecting plate

Authors： Huang Wei Gu Zhongtao Chen Bo Zhao Tian

Unit： Southwest University of Science and Technology

KeyWords： TC4 titanium alloy core riveting stress concentration residual stress residual strain

ClassificationCode：TG938

year,vol(issue):pagenumber：2023,48(11):95-103

Abstract：

For the core riveting process of TC4 titanium alloy skin of a certain high-speed aircraft, the core riveting process of TC4 titanium alloy connecting plate was numerically simulated by finite element software ABAQUS. Then, the accuracy of finite element model was verified through core riveting tests, and the deformation condition, residual stress and residual strain of core rivet and connecting plate were analyzed and discussed. The results show that during the core riveting process, the obvious stress concentration occurs near the broken neck groove of nail rod, locking ring, rivet head and rivet hole. The closer to the rivet head, the more violent the metal material flows. After the core riveting is completed, the residual stress is mainly distributed in the broken neck groove of nail rod, locking ring, rivet head and rivet hole. Among them, the residual stress at the broken position of nail rod is the maximum value, namely, about 1015 MPa. The main distribution areas of residual strain are around the rivet head, locking ring and rivet hole. Among them, the residual strain at the rivet head is the maximum value, about 0.49.

Funds：

作者简介：黄伟（1993-），男，硕士，E-mail：1366156515@qq.com；通信作者：古忠涛（1970-），男，博士，副教授，E-mail：guzhongtao2005@163.com

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