Numerical Simulation Of The Full Surface Wheel’s Bench Test And Fatigue Life Analysis

The status of cars in people’s daily life is becoming more and more important. People pay more and more attention on the performance of wheels also. The full surface wheel generates in this background. The dynamic characteristic, strength analysis and fatigue life analysis of the full surface wheel is the important issues of wheel technology. This subject is based on the actual needs of the wheel manufacturer. Carry on numerical simulation of the full surface wheel’s bench test. And carry out radial fatigue and bending fatigue life analysis of the full surface wheel.This full surface wheel is two-piece, including one spoke and one rim, the connection of spoke and rim through interference fit and weld. We use elastic-plastic theory to analyze the fit. There is plastic deformation on both the rim and the spoke in the results, but the fit did not undermine wheel. The analysis of bolt preload is to compare the influence of different tightening sequences, through the analysis shows that tightening the bolts at the same time reduces spoke stress the most effective and the bolt preload should be considered bending fatigue test. Probe one method of nut seat stiffness test by FEM. The analysis shows permanent deformation of nut seat lines with national standards.Carry on modal analysis of the full surface wheel under bending conditions. Test the wheel in bound state to obtain natural frequencies and the figure vibration modes. The analysis shows that the frequency of load is much lower than the first natural frequency of the wheel, resonance doesn’t occur when the model in the process of bending fatigue test.Under the bending fatigue test condition of the full surface wheel, analyze the degree of influence of the different regions on the spoke by the bolt preload under bending fatigue test conditions alone. Considering the impact of material nonlinearity and bolt preload, carry on stress analysis under the dynamic moment load. Obtain node stress distribution law. Fatigue failure is prone to occur on the fillet of vents. Predict bending fatigue life of the wheel by nominal stress method.Under the radical fatigue test condition of the full surface wheel, considering the test pressure of the tire and making radial load as close as possible to the real conditions. Loading changing radial load in order to obtain the position of dangerous area, the load history of the hazardous node and predict the fatigue life of the wheel in the radial fatigue test.