Fluid-solid coupling calculation model of elastic ring type squeeze film damper

A technology of squeeze oil film damping and calculation model, which is applied in the fields of instrumentation, design optimization/simulation, special data processing applications, etc., can solve the problems of incomplete understanding and restrict the design level, etc., so as to save calculation time and reduce the degree of freedom. Number, the effect of compressing the calculation scale

Pending Publication Date: 2022-01-14
AERO ENGINE ACAD OF CHINA
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Problems solved by technology

[0005] Just like the damping mechanism of ERSFD described above, ERSFD itself produces the damping effect through the fluid-solid coupling effect of the oil film and the elastic ring. So far, the fluid-solid coupling mechanism of ERSFD has not been fully understood, which restricts the design level. promote

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  • Fluid-solid coupling calculation model of elastic ring type squeeze film damper
  • Fluid-solid coupling calculation model of elastic ring type squeeze film damper
  • Fluid-solid coupling calculation model of elastic ring type squeeze film damper

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[0075] The present disclosure will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific implementation manners described here are only used to explain relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only parts related to the present disclosure are shown in the drawings.

[0076] It should be noted that, in the case of no conflict, the implementation modes and the features in the implementation modes in the present disclosure can be combined with each other. The present disclosure will be described in detail below with reference to the drawings and embodiments.

[0077] refer to figure 2 As shown, a fluid-solid coupling calculation model of an elastic ring squeeze film damper, including:

[0078] Neglecting the change of pressure along the radial gap direction of the oil film, the three-dimensional model of the fluid in the fluid domai...

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Abstract

The invention discloses a fluid-solid coupling calculation model of an elastic ring type squeeze film damper, which adopts a Reynolds equation as an oil film control differential equation of an oil film, so that a three-dimensional fluid mechanics model of the oil film is simplified into a two-dimensional model, the number of degrees of freedom of the ERSFD fluid-solid coupling model is reduced, the calculation scale is compressed, and the calculation time can be remarkably saved. The structural deformation of the elastic ring is described by adopting a deflection curve differential equation of a beam, a three-dimensional structural mechanical model is simplified into a one-dimensional model, and the boundary condition of the elastic ring section is set to be a simple support type according to the working state of the elastic ring, so that the contact iteration process between a boss and a bearing seat and between the boss and a bearing outer ring is omitted, and a basis is provided for further improving the calculation efficiency.

Description

technical field [0001] The disclosure belongs to the technical field of an elastic ring squeeze oil film damper, and in particular relates to a fluid-solid coupling calculation model of an elastic ring squeeze oil film damper. Background technique [0002] The elastic ring squeeze oil film damper (ERSFD) realizes the damping effect through the coupling effect of the elastic ring and the oil film. Among them, the overall structure of the elastic ring is a short cylindrical ring, and the inner and outer surfaces of the cylindrical ring are processed with evenly distributed bosses. In engineering applications, the number of bosses on the inner and outer surfaces of the elastic ring is equal, and the inner bosses and The outer bosses are in the form of a staggered distribution. The elastic ring of ERSFD is installed between the bearing seat and the bearing. Due to the existence of the boss and the sealing device at the end of the elastic ring, multiple segmented oil film caviti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F119/14
CPCG06F30/23G06F2119/14
Inventor 张学宁胡文颖张生光陈霞
Owner AERO ENGINE ACAD OF CHINA
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