With the development of aerospace

high-speed trains

bridges and other industries in China

a large number of light-weight and high-strength metal alloy or composite materials will be widely used

which requires the use of large-diameter and high-strength rivets for plate riveting to achieve effective assembly and connection of large-scale structural parts. However

the traditional riveting technology has some quality problems

such as the difficulty of forming rivets

the easy cracking of upsets

and the difficulty of controlling interference fit. Introducing the ultrasonic vibrationassisted plastic processing technology into the traditional press riveting process

which helps reduce the metal deformation resistance and improves the forming performance

is expected to improve the above problems. In this paper

ABAQUS finite element analysis software is used to simulate the process of TA1 countersunk rivet traditional press riveting and ultrasonic vibration-assisted riveting of double-layer C45 plate

analyze the deformation process of plate and rivet

and compare the factors that affect the riveting quality of the joint

such as riveting force

shear stress

residual stress and interference. The results show that ultrasonic vibration-assisted riveting can significantly reduce the riveting pressure

the shear stress and residual stress of the rivet

so that the riveting piece can obtain a uniform and reasonable amount of interference

thereby effectively improving the riveting quality