Abstract
The interference is the main parameter affecting the fatigue lifetime of the interference-fit joints. In this paper, the numerical simulation method of the interference-fit riveting process was studied for the object of the aluminium alloy joint commonly used in aircraft. On this basis, the influence of different interferences on the joint life was calculated and determined, which can provide a basis for determining the ideal riveting interference. The numerical simulation results show that the model built in this paper can well describe the whole forming process of the rivet including the overall upsetting and local upsetting. With the increase of the interference, the fatigue lifetime of the joint increases first and then decreases. For the joint structure given in this paper, when the interference is between 2.9% and 3.23%, a higher life increment can be obtained, which is basically consistent with the ideal interference obtained by experiments.
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