Abstract
Local high temperature, stress concentration, and abnormal friction coefficients will appear at the friction pair in a wet clutch as a result of surface topography real-time changing. In order to improve the reliability of clutch friction components and reduce the failure phenomenon, the three-dimensional fractal surface topography data of the actual rough surface asperities are scanned, extracted, and processed successively, and then the finite element model of the rotary sliding friction pair is established considering the micro surface topography. Based on the finite element model, the variation of surface stress and strain is analyzed, and the friction coefficient measured experimentally is taken as the model input. It is concluded that when the rough surface and smooth surface make contact with each other, the maximum stress and plastic strain appear at the inner radius edge. Therefore, this research has a guiding significance for the structural design and processing technology of the friction components in a vehicle clutch.
Highlights
This research has a guiding significance for the structural design and processing technology of the friction components in a vehicle clutch
Li [13] analyzed the radial and circumferential temperature field distribution on a friction disc surface by simulating the wet clutch sliding process, and the results showed that the radial temperature difference is the main cause of failure
Wang [14] investigated the distribution relationship between hot spot and contact pressure on one friction pair using the thermo-mechanical coupling finite element method, and the results showed that the temperature field is consistent with the contact pressure field
Summary
This research has a guiding significance for the structural design and processing technology of the friction components in a vehicle clutch. On the other hand, exploring the influence mechanism of surface morphology on interface stress and friction characteristics can greatly reduce the friction pair failure and improve the material performance [12]. Li [13] analyzed the radial and circumferential temperature field distribution on a friction disc surface by simulating the wet clutch sliding process, and the results showed that the radial temperature difference is the main cause of failure. Wang [14] investigated the distribution relationship between hot spot and contact pressure on one friction pair using the thermo-mechanical coupling finite element method, and the results showed that the temperature field is consistent with the contact pressure field. Low metallic (LM), semi-metallic (SM), and non-asbestos organic (NAO)
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