In order to study the influence of the height of the concave surface of the riveted top die on the quality of the riveted joint due to increased damage

the height of the concave surface was changed without changing the radius of the concave surface to simulate the concave surface with defects caused by the damage

and the influence of the height of the concave surface of the top die on the quality of the interference fit was revealed by using the numerical simulation and experimental verification. The effect of the height of the concave surface of the top die on the quality of the interference fit is revealed by using the numerical simulation and experimental verification. ABAQUS finite element analysis software was used to simulate the riveting and shearing processes

and the accuracy and validity of the finite element model was verified through testing. The results of the study show that as the height of the concave arc of the top die increases

the header diameter tends to increase and the header height tends to decrease

and the shear strength of the joint gradually increases. The average amount of interference was 38.1% greater when the height of the concave die was less than or equal to the radius of the rivet half-round head than when the height of the concave die was greater than the radius of the rivet half-round head.