Analysis of unsteady processes in the braking device disc-pad type when braking

   The paper presents a mathematical model of unsteady braking processes at the level of the “pressing element – brake pad – brake disc” system.

   A feature of this model is that it provides the location of the pressing elements, the geometric dimensions of the brake pad and the pressing elements for changes in the angular and linear vibrations of the brake pad when they interact with the working surface of the brake disc.

   The main parameters that evaluate the non-stationary interaction process are the pitch and lateral movement angles of different edges of the brake pad, which is clearly demonstrated in comparative diagrams of the total vibrations of the upper and right corners of the brake pad, their accelerations and inertial load during braking.

   Analysis of the inertial load diagram shows that the upper corner is more susceptible to separation of the pad edge from the working surface of the disc, provided that the frequency of forced vibrations is lower, while the higher frequency of forced vibrations in the lower edge of the pad does not increase the risk of its separation from the surface of the disc during interaction. In general, the mathematical model makes it possible to analyze the non-stationary interaction process with the pad loading, the location and geometric parameters of the pressing mechanism of a disc-pad type brake device.

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