Numerical and Experimental Studies on the Load Characteristics of Geometric Interference of Steel-Aluminum Knurled Interference Fit

This research studied the knurled interference fits (KIF) jointing process, which involves connection via a shaft and hub. KIF are widely used in many industries and products, but the related research is limited, especially in the case of auto parts. To confirm the optimal parameters for KIF joining, two different simulations in the finite element method (FEM), two hub thicknesses, three geometry versions, and four coefficients of friction (COF) were adopted to simulate the KIF forming process in this study. All the parameters were investigated in detail and accurately referred to experimental examination outcomes. The simulations and the experimental results offered explicit explanations of the relationship between jointing force and geometry dimensions. The hub-forming shape and the simulation of hoop deformation were analyzed, and the analysis results provide useful suggestions for other related industrial research as well.