Research on hydrodynamic parameters of wet friction pairs of disc-shoe brake of vehicle
The article considers the following issues: the influence of design features of various types of the brake discs on the intensity of their irrigation with water; the use of generalized variables in analytical study of electrothermomechanical friction interaction of the wet friction pairs of disc brakes; the determination of water layer thickness on surface of solid disk during electrothermomechanical friction by method of generalized variables. The designs of continuous and self-ventilated brake discs were analyzed taking into account the areas of their surfaces irrigated with water, as well as weight characteristics that affect the energy load of wet friction pairs of vehicle brakes. A new method of estimating the allowable thickness of a water film covering the friction belt of any disk based on the second similarity theorem using the method of generalized variables using similarity criteria is proposed. A criterion equation was obtained for determining the permissible thickness of the water film taking into account the topography of the surface of the disk friction belt. The results of calculations are presented in the form of graphical dependencies.