Study on Influences of Manufacturing Process on Detail Fatigue Rating of Aluminum-lithium Alloy Structure
Research the effects of the milling speed on U-notch details,and chamfer and feed rate on the opening details,and interference details on DFR in aluminum-lithium alloy.The results show that in a certain range of milling speed,there is an optimal milling speed;the hole edge chamfer can effectively reduce the stress concentration and improve the fatigue performance;interference fit riveting introduces the residual compressive stress into the hole wall,which has a certain strengthening effect on the hole connection,By increasing the amount of interference,the connection can reach the fatigue life equivalent to that of the whole material,which is no longer the weakest link in riveting parts.
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