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Wheel rim fatigue analysis method

A fatigue analysis and steel ring technology, applied in the field of auto parts, can solve the problems of long development cycle and high cost

Inactive Publication Date: 2015-04-22
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to provide a fatigue analysis method for wheel steel rims, which overcomes the defects of long design and development cycle and high cost of wheel steel rims in the prior art, and has the characteristics of accurate calculation and high calculation efficiency

Method used

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] The wheel steel rim fatigue analysis method of the present embodiment comprises the following steps:

[0023] This embodiment uses the finite element method to establish the model of the tested wheel rim, the preset working condition is that the bending moment is 20Kn. The loads in 6 directions, each direction forms an angle of 60 degrees with each other, establishes a stress cloud map, and determines the stress concentration point under the load in each direction as a dangerous point. The dangerous points obtained on the stress cloud map of this embodiment are the small holes of the ventilation holes and the ventilation holes. On both sides of the hole notch direction, the dangerous points known from experience include: the bolt hole of the steel ring, the weld between the steel ring and the rim, and the large hole connecting the spoke and the...

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Abstract

The invention aims to provide a wheel rim fatigue analysis method which comprises the steps that A, boundary constraint conditions, material parameters and working conditions are preset, and a tested wheel rims model is established with a finite element method; B, loads in six directions are applied to the model, stress nephograms are established, stress concentration points under the loads in all directions are determined as dangerous points, and dangerous load directions are determined in the six directions; C, Mises stress ad stress in X, Y and Z directions of the dangerous points determined by all the nephograms and tested known dangerous points are measured, and the largest direction stress is determined as the stress direction of the dangerous point; D, fatigue lives N in all test areas are calculated by combining the preset material parameters and the strass data obtained in the step C, and the calculated minimum value in the fatigue lives is the minimum fatigue life of the tested wheel rim. The wheel rim fatigue analysis method overcomes the defects that the design and development cycle of a wheel rim is long and the cost is high in the prior art and has the advantages of accurate calculation and high calculation efficiency.

Description

technical field [0001] The invention relates to the field of auto parts, in particular to a fatigue analysis method for wheel rims Background technique [0002] Wheels are an important factor to measure the development level of today's automobile industry. A series of safety in the use of automobiles, including tire wear, fuel consumption and the convenience of personnel's own operation, are all related to the accuracy of the wheels when powering the automobile. Therefore, the wheels It becomes very important to provide a superior degree of quality for the whole vehicle. In view of the fact that the main random load in the driving process is the fatigue load that often acts on the wheel, and the main source of damage to the wheel is the bending load generated during the working driving, so the fatigue life has become the main research problem in the wheel manufacturing, that is, to ensure the damage and fracture. Try not to happen within the working life of the wheel. Most...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 李健刘慷韦辽
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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