Liang, X. and Ji, H., 2020. Research on friction and impact load response of ship shafting. In: Gong, D.; Zhang, M., and Liu, R. (eds.), Advances in Coastal Research: Engineering, Industry, Economy, and Sustainable Development. Journal of Coastal Research, Special Issue No. 106, pp. 514–517. Coconut Creek (Florida), ISSN 0749-0208.
With the increase of rotating speed, the vibration speed of impact load increases. The slower, the slower and the faster, the vibration maintenance time is also different. This shows that when the rotation speed of the shaft changes, the oil-film lubrication characteristics of the bearing change, and the oil-film stiffness and oil-film damping of the bearing change, thus showing the support of the sliding bearing. Different from the fixed elastic damping bearing, which is not affected by rotating speed, the oil film dynamically changes its support stiffness and variable damping characteristics. Therefore, when the rotating speed is in the self-excited vibration region of the sliding bearing, the impact time is long, and the amplitude attenuation is slow. When the rotating speed is not in the self-excited vibration region of the bearing, it is in good agreement with the theoretical calculation results.