Study on the impact of different friction coefficient combinations of disc spring assemblies on load

This paper focuses on the disc spring assembly in a certain type of disc spring bellows as the research object. According to the technical requirements of the bellows, disc spring assemblies with different combinations (face-to-face, stacked, and composite) are designed. The influence of the number of discs and different combinations on the load of disc spring assemblies with different friction coefficients is analyzed using numerical simulation methods and verified by experiments. The simulation results show that the number of discs in the face-to-face combination has no effect on the load, the number of discs in the stacked combination has a linearly increasing effect on the load, and the number of discs in the composite combination has a non-linear effect on the load. Furthermore, the numerical calculation results of the load with friction coefficients of 0, 0.1, and 0.16 are compared with the experimental results. The relative errors between the two results are 3.3%, 1.5%, and 1.4%, respectively, and the error values are within the allowable range, which verifies the accuracy of the load calculation model. After discussing the combination methods, finally, through comparative analysis, the load model of the composite disc spring structure is used to fit a prediction model of the number of discs and the load considering the influence of friction, which provides a theoretical reference for the engineering application of disc spring assemblies in disc spring bellows.