INFLUENCE OF A SHAFT COATED BY TRIBOADHESION WITH DLC ON THE PRESSURE DISTRIBUTION AND DYNAMIC RESPONSE OF A TILTING PAD BEARING

This work is concerned with the dynamic and pressure response of a hydrodynamic tilting pad bearing caused by a shaft with and without DLC coating. Here it is shown that the maximum pressure it is moved towards the center of symmetry when the DLC coating is applied. This was attributed to the decrement of the shear stress at the surface between the shaft and the fluid. It is also shown that the amplitude of the vibration signal when analyzed through wavelets is lower for the case with coating compared with the no coating.