Analysis of boundary conditions in design circuits influence on the shaft line operating state

Abstract

The work investigates the bearing piece boundary conditions influence on the shaft line operating state, with respect to elastic properties of stern-tube bearings. It is noted that the shaft line is a part of the ship’s power plant and it is a shaft system, located on the same axis. Performance criterion is the deflection of the concentrated load in the design scheme`s action point, modeling the propeller`s weight, bearing parts reactions and the natural frequency of linear lateral oscillations. The design scheme itself is a beam, resting on two elastic supports with a k stiffness factor, with concentrated load acting on the one end and three variants of the boundary conditions: pinched, hinged and sliding supports on another one. The results of calculations are given for different boundary conditions and the stiffness factors of elastic supports. The diagram of natural frequencies of linear lateral oscillations of ship`s shafting line is presented.

Influence analysis of piano music immersion virtual reality cooperation based on mapping equation

“…Objects farther from the camera than the canvas will be blocked. Adjust the plane distance between the canvas and the camera to 100, set the reference resolution, select the scale with screen size / match width or height scaling method in UI scale mode to correspond to different size resolutions, and finally achieve the piano effect [11].…”