• THE PARAMETRIC OSCILLATIONS OF STEEL FRICTION PLATES FOR A MULTIPLATE CLUTCHES

    Trans Motauto World, Vol. 1 (2016), Issue 1, pg(s) 3-6

    The article substantiates the ways of tuning parametric oscillations providing for increasing durability of steel and friction plates of vehicle transmissions. The evaluation of dynamic stability is conducted on the basis of the analysis of Mathieu equation and Ince-Strutt diagram. It is offered to restrict the parameter of rigidity modulation depth by filtering low-frequency disturbances formed in the nonlinear system by the power unit (internal combustion engine (ICE) or electric motor (EM)), by hydrodynamic processes in the hydraulic transformer (torque converter or hydraulic coupling) and in the system of its oil supply. The performance evaluation of the developed actions on plate’s durability is conducted.

  • VIBRATION ANALYSIS ON A CONVEYOR DRIVE UNIT IN CONVEYOR TRANSPORT SYSTEM FOR COAL

    Machines. Technologies. Materials., Vol. 10 (2016), Issue 4, pg(s) 16-19

    The subject of research in this paper is a conveyor drive unit from a conveyor coal transport system that is used by SM "Brod – Gneotino" to SM "Suvodol" (Power plant REK Bitola-Macedonia) because of its existing signs of increased vibrations. Vibration measurements of the drive transporter T5 was obtained to determine the vibration state of the drive unit. Each driveline (electric motor – hydro clutch – gear reducer) has ten measuring points – probes to monitor temperature and ten measuring points – probes for monitoring the vibration of the electric motor bearings and bearings of the gear reducer.

    Through proper FFT analysis of the vibration signal that has been obtained by the probes we will determine further conclusions and recommendations regarding the state of the elements of the system and their dynamic stability.