Riveting is the main way of mechanical connection for aircraft structures

and the riveting force is an important factor affecting the quality of riveting. Traditional computation methods of riveting force are usually based on the constant-volume assumption

without considering the volume of the rivet material being pressed into the rivet hole

which caused the big error of the model. To this end

according to the simulation results and the flow trend of rivet material

the volume reduction coefficient is introduced to take into account the volume of the nail bar being pressed into the rivet hole

establishing a prediction model of riveting force and comparing with the available experimental data. The results show that the calculated values are in good agreement with the experimental ones

so this model can be used to predict the magnitude of riveting force in riveting process.