supported by the National Natural Science Foundation of China(Nos.51905024,51975035 and 91960203).
Imposing compressive residual stress field around a fastening hole serves as a universal method to enhance the hole fatigue strength in the aircraft assembly filed.Ultrasonic Peening Drilling(UPD)is a recently propose...
An upper-bound model for ironing is proposed according to theupper-bound theorem. There are two independent parameters which are used tooptimize the upperbound approach in this model. Through calculation, the analytic...