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Method for measuring natural frequency of wheel

A natural frequency, wheel technology, applied in the field of wheel development technology, can solve the problems of vehicle destructive damage, impact on vehicle stability, impact on ride comfort, etc., and achieve high accuracy and good correlation.

Inactive Publication Date: 2009-07-15
CITIC DICASTAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the wheels resonate with the vehicle, it will have a great impact on the stability of the vehicle, and vibration will be generated, which will not only affect the ride comfort, but also cause destructive damage to the vehicle.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The present invention can be decomposed into the following steps:

[0010] The first step: establish a mathematical three-dimensional model. In the simulation module of I-DEAS software, the model is divided into grids according to the corresponding requirements.

[0011] Step 2: Apply boundary conditions. When calculating the natural frequency in the I-DEAS software, only the boundary conditions are set. The boundary conditions refer to the conditions during the test to simulate the state of the wheel assembly, and there are several options as follows:

[0012] 1) Keep the fixed constraints of the flange face.

[0013] 2) Operate the nodes at the bolt holes to simulate the shape of the wheel and bolt assembly.

[0014] Step 3: Establish boundary condition set. After the boundary conditions are applied, a boundary condition set is established, and the constraints are set into a set of boundary conditions. Subsequent settlements are based on this set of boundary cond...

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Abstract

The invention discloses a wheel inherent frequency measuring method, The invention comprises the steps: pre-processing (dividing into grids, applying boundary conditions) calculating, and post processing (interpreting the vibration mode in different stages, interpreting and outputting the inherent frequency). The method achieves the advantages of high analysis accuracy and good correlation with actual measured result, has guidance function to wheel design.

Description

technical field [0001] The invention relates to a wheel development process, in particular to a method for simulating the natural frequency of a wheel. Background technique [0002] As a modern transportation and means of transportation, people's requirements for automobiles are not only limited to safety, but also have higher and higher requirements for riding comfort and driving stability. The correlation between the natural frequency (natural frequency and mode shape) of the wheel and the road load is an important factor affecting road noise and vibration. Therefore, controlling the natural frequency of the wheel, especially the natural frequency within a reasonable value range, is a common concern of automobile OEMs and supporting suppliers. [0003] As an important functional part of a car, the wheel not only needs to meet the requirements of strength and safety, but also has requirements for its natural frequency. Traditional wheel design only considers the requireme...

Claims

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Application Information

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IPC IPC(8): G01H13/00G01M17/013
Inventor 熊国源王军李力重
Owner CITIC DICASTAL