MODELING OF THERMAL AND WEAROUT PROCESSES OF BRAND - NEW FRICTION CLUTCH FOR MECHANICAL ENGINEERING
The brand-new friction clutch for mechanical engineering, with the complex relative movement of the effective area points on the friction pairs has the following advantages: higher smoothness of turning on and off, lower noise and vibration levels, as well as lower uniform wearout of the effective areas on the friction pairs. This requires reducing the contact temperatures in the zone of the frictional interaction. The in-depth research of the thermal and wearout processes is required. Objective: the development of the complex mathematical model for the thermal and wearout processes of the brand-new friction clutch for mechanical engineering (with the complex relative movement of the effective area points on the friction pairs) by improving the existing mathematical models, considering the kinematic and constructional features of the brand-new friction clutch. Methods Applied: the mathematical modeling of the thermal and wearout processes, the experimental design technique, the laboratory experimentation, the comparative and statistical data analysis of the experimental results. The complex mathematical model, which describes the regularities of the energy release, the heat transfer, and the wearout of the friction clutch with the complex relative movement of the effective areas on the friction pairs, is proposed. The new analytic dependences were obtained: the dependence between the coefficient of sliding friction (for the effective areas on the friction pairs of the friction clutch), the wearout of friction materials, the temperature and the relative speed of the effective area points; the dependence between the thermophysical parameters of friction materials and the temperature. The universal correlation expression for the dependence between the relative speed of the effective area points on the friction pairs of the friction clutch and the heat transfer coefficients for the internal and external convection is proposed. It was found that the results of the mathematical modeling cognate with the experimental results. The developed complex mathematical model stand by the numerical experimentation for the brand-new friction clutches of various designs. The experimental results can be used to obtain the optimal parameters for the friction clutches of various designs.