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Bearing simplifying method in finite element simulation analysis

A simulation analysis, finite element technology, applied to bearing simplification in finite element simulation analysis, finite element simulation analysis field, can solve problems such as low efficiency and large amount of calculation

Inactive Publication Date: 2014-12-24
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The traditional finite element analysis of bearings uses solid modeling, which has the disadvantages of large amount of calculation and low efficiency, especially in large mechanical systems due to the large number of bearings

Method used

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  • Bearing simplifying method in finite element simulation analysis
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  • Bearing simplifying method in finite element simulation analysis

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Embodiment Construction

[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0057] Take the angular contact bearing S7000 as an example. Draw the geometric model of the bearing in Solidworks such as figure 1 shown. Imported into Hypermesh, the inner and outer rings are meshed, such as figure 2 shown. Next follow the steps to calculate the radial stiffness of the bearing. The calculation parameters are shown in Table 1 below.

[0058] Table 1

[0059] parameters

value

Number of balls

13

Contact angle α(°)

15

Ball radius R j (mm)

2

Radius R of the outer ring raceway e (mm)

1.99

Radius R of the inner ring raceway i (mm)

1.99

bearing material

Bearing steel

Axial external load F a (N)

100

Rad...

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Abstract

The invention discloses a bearing simplifying method in finite element simulation analysis. According to the method, a three-dimensional gap unit is used for simplifying finite element analysis of an angular contact bearing, and a three-dimensional model of the bearing is drawn in three-dimensional mapping software solidworks. The bearing model is imported into finite element pre-processing software Hypermesh. An outer ring and an inner ring of the bearing are divided into hexahedral meshes. The outer ring and the inner ring of the bearing are connected through the three-dimensional gap unit. The spring stiffness K in the gap unit is worked out through a bearing radial stiffness calculation program. The finite element model is exported from the Hypermesh, then the finite element model is imported into engineering simulation software ANSYS, and mechanical calculation is conducted. According to the method, the calculation amount of finite element analysis can be simplified, the efficiency can be increased, and the calculation accuracy cannot be damaged.

Description

technical field [0001] The invention is suitable for static and dynamic finite element simulation analysis of a mechanical system containing bearings, belongs to the field of mechanical simulation CAE, and specifically relates to a bearing simplification method in finite element simulation analysis. Background technique [0002] Rolling bearings are important mechanical basic components and are widely used in machine tools, precision motion platforms, ships, aerospace and other fields. In the current design system of large-scale mechanical systems such as aircraft and automobiles, computer-aided design is more and more widely used because it can greatly save costs and shorten cycle times. As the most important mechanical analysis method in mechanical systems, finite element analysis has been integrated into many large-scale software and widely used. Software such as Hypermesh that this patent adopts, ANASYS. [0003] The traditional finite element analysis of bearings adop...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 程依光刘俊伯胡松赵立新朱江平
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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