A Calculation Method of Temperature Distribution of Sliding Bearing Journal

Abstract

The invention discloses a method for calculating the temperature distribution of a journal of a sliding bearing, which comprises the following steps: (1) using complex numbers to describe the vortex motion equation of the journal of the sliding bearing; (2) decomposing the vortex of the journal of the sliding bearing into positive vortex (3) Construct a sliding bearing oil film calculation control volume model; (4) Solve the journal temperature distribution at any point on the positive whirl trajectory according to energy conservation, which is the journal temperature distribution of the sliding bearing. In order to solve the problem that the temperature distribution of the journal of the sliding bearing cannot be quickly and accurately measured, a calculation method for the temperature distribution of the journal of the sliding bearing is provided. The method of decomposing the whirl track into positive and negative whirl is adopted, and the synchronous whirl shaft of the sliding bearing is The neck temperature difference is simplified as the journal temperature difference at any point on the positive whirl track, thereby simplifying the existing calculation method of the journal temperature distribution of the sliding bearing, which is reliable, accurate, convenient and quick.

Description

[0001] Field [0002] The invention belongs to the technical field of sliding bearing dynamic pressure lubrication theory, and in particular relates to a calculation method for temperature distribution of a sliding bearing journal. Background technique [0003] Bearing is an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. Under high-speed and light-load conditions, it is used as a sliding bearing most frequently. [0004] Under the action of unbalanced force, when the journal of the sliding bearing whirls synchronously in the forward direction, a certain arc section of the journal surface will always be at the thinnest oil film, where the oil film temperature is high and the shear force is large, while the opposite arc section oil film The temperature is always low. Due to the uneven temperature distribution of the circumfe...

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Problems solved by technology

[0006] The present invention is aimed at the problem that the temperature distribution of the journal of the sliding bearing cannot be quickly and accurately measured in the prior art, and provides a calculation method for the temperature distribution of the journal of the sliding bearing, which adopts the method of decomposing the whirl track into positive and negative whirl , the temperature difference of the synchronous scroll journal of the sliding bearing is simplified to the journal temperature difference at any point on the positive scroll track, thus simplifying the existing calculation method of the journal temperature distribution of the sliding bearing, which is reliable, accurate, convenient and quick

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