Abstract: The present disclosure provides a lubrication analysis method for a stern bearing based on magnetic-hydraulic composite support coupling, including: performing structural deformation analysis on a stern bearing on the basis of a magnetic support analysis result and a lubrication support analysis result to obtain a structural deformation amount, correcting a water film thickness, repeating lubrication and interface characteristics analysis to obtain water film pressures before and after correcting, comparing the water film pressures to determine whether convergence occurs, solving for a load carrying capacity of the stern bearing on the basis of the analysis result if the convergence occurs, determining whether the load carrying capacity is balanced with an input load, and calculating a bearing wear depth of the stern bearing on the basis of a contact force of a micro-convex body if the load carrying capacity is balanced with the input load.

Abstract: Disclosed is a double-layer oil film lubrication analysis method and system based on a floating bushing. The method includes: determining a roller motion track and a floating bushing motion track according to a roller displacement and a floating bushing displacement; determining, when the motion tracks are closed end to end, minimum values of inner-layer and outer-layer oil film thickness of the floating bushing according to an oil film thickness at each moment; and determining that an abnormality exists in double-layer oil film lubrication when either of the minimum values of the inner-layer and outer-layer oil film thickness of the floating bushing is less than a preset oil film thickness threshold value. According to the present disclosure, more accurate abnormality analysis of double-layer oil film lubrication can be realized.

Abstract: A method for calculating coupled lubrication and dynamics characteristic parameters of a flanged bearing includes three modules: a flanged bearing journal-trust thermal elastohydrodynamic coupled lubrication module, a flanged bearing dynamics characteristic parameter calculation module and a flanged bearing relative position feedback module. It considers the joint motion law of the journal part and the thrust part, and also considers the flow, pressure and thermal continuity conditions of the lubricant on the common boundary of the flange bearing, and finally forms the journal-thrust transient coupled lubrication analysis method of the flange bearing. On the basis, considerations are further given to the stiffness and the damping characteristics of the flanged bearing under the coupled effect, thereby achieving accurate simulation of the dynamic and the tribology performance of the flanged bearing, and solving the problem of lubrication failure of the flanged bearing.