Cold expansion technology of connection holes in aircraft structures:A review and prospect

作     者：Fu Yucan Ge Ende Su Honghua Xu Jiuhua Li Renzheng 

作者机构：College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and Astronautics 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2015年第28卷第4期

页      面：961-973页

核心收录：

学科分类：08[工学] 082503[工学-航空宇航制造工程] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 0801[工学-力学（可授工学、理学学位）] 

基　　金：the Fund of National Engineering and Research Center for Commercial Aircraft Manufacturing of China (No.SAMC12-JS-15-021) the Funding of Jiangsu Innovation Program for Graduate Education of China (No.CXLX12_0137) the Fundamental Research Funds for the Central Universities of China 

主　　题：Aircraft structure Cold expansion Connection hole Fatigue life Finite element simulation Residual stress 

摘      要：As one kind of key anti-fatigue manufacture approaches with simplicity and effectiveness, the hole cold expansion technology satisfies the increasing needs for light weight and durability of aircraft *** can improve the fatigue life by several times at no additional weight *** hole cold expansion technology has been widely used in manufacturing and repairing of both fighters and commercial aircraft, and has become a research hotspot in the strengthening *** recent years, hole cold expansion process methods, residual stress around expanded holes, the behavior of fatigue crack initiation and propagation, and fatigue lives after cold expansion are researched extensively through lots of experiments and finite element simulations.A review on the hole cold expansion technology research status in the last twenty years is presented in this *** the analysis of the current characteristics and defects of the hole cold expansion technology, combined with the actual needs in design and manufacture of new-generation aircraft, development trends and novel research directions are presented for realizing precise and high-efficiency anti-fatigue manufacture.