Multi-oil-cavity dynamic and static pressure sliding bearing oil film characteristic simulation method based on high-order isogeometry

Abstract

The invention discloses a multi-oil-cavity dynamic and static pressure sliding bearing oil film characteristic simulation method based on high-order isogeometry, and the method comprises the steps: firstly determining an analysis model of feedback dynamic and static pressure sliding bearing oil film pressure distribution in multiple oil cavities, and then building a high-order isogeometry analysis model of the feedback dynamic and static pressure sliding bearing oil film pressure distribution in the multiple oil cavities; and then constructing a high-order isogeometric calculation model for oil film pressure distribution of the multi-oil-cavity internal feedback dynamic and static pressure sliding bearing, constructing a boundary control equation of an analysis layer and a control layer in the bearing, and finally constructing and solving global pressure field distribution information under a complex structure boundary. According to the invention, efficient analysis of the oil film pressure field of the internal feedback dynamic and static pressure sliding bearing with a complex structure and boundary is realized.

Description

technical field [0001] The invention belongs to the technical field of dynamic and static pressure bearings, and in particular relates to a method for simulating the oil film characteristics of a multi-oil cavity dynamic and static pressure sliding bearing based on high-order equi-geometry. Background technique [0002] Sliding bearings are very important parts in mechanical equipment. Compared with rolling bearings, sliding bearings have the advantages of small frictional resistance, high efficiency, and good vibration absorption performance, and are widely used; sliding bearings are divided into dynamic pressure bearings, static bearings according to their working principles. Pressure bearings and dynamic and static pressure bearings, hydrostatic bearings use the supply of the external system to fill the viscous working medium into the gap of relative movement, and then form a supporting liquid film, but the external system is complicated and the control is cumbersome. Con...

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Problems solved by technology

[0004] However, due to the complex structure and working mechanism of internal feedback dynamic and static pressure bearings, there is a lack of efficient and accurate numerical calculation methods for this type of coupling field analysis, which makes it difficult to improve the structure and innovative design of dynamic and static pressure sliding bearings. The lack of accurate physical field responses will Unreliable and non-optimal structural design, and the calculation method with high computational cost is difficult to connect with engineering practice. Therefore, there is an urgent need for a numerical analysis method that can solve complex structural boundary problems to efficiently and accurately solve internal feedback dynamic and static pressure sliding bearings. oil film pressure distribution

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