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Analysis method for fatigue of torsion beam welding assembly

An analysis method and torsion beam technology, applied in the analysis of materials, strength properties, measuring devices, etc., can solve problems such as low reliability, complex fatigue analysis, and imperfect analysis methods, saving project costs and reducing compression. Development cycle, the effect of accurate analysis results

Active Publication Date: 2011-04-27
CHERY AUTOMOBILE CO LTD
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  • Abstract
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Problems solved by technology

[0002] The torsion beam rear suspension has the advantages of good handling stability, easy layout, good passability, simple and reliable structure, high cost performance, and daily maintenance-free, but the development of this torsion beam suspension, especially the analysis of fatigue It is relatively complicated, and its related analysis methods are not perfect, and its reliability is not very high.

Method used

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  • Analysis method for fatigue of torsion beam welding assembly
  • Analysis method for fatigue of torsion beam welding assembly
  • Analysis method for fatigue of torsion beam welding assembly

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Embodiment 1

[0023] Such as figure 1 Shown, the analysis method of the fatigue degree of torsion beam welded assembly of the present invention comprises the steps:

[0024] A: Use the CAE analysis method to simulate the force of the torsion beam in the vehicle, and select the stress concentration area as the investigation area;

[0025] B: Paste the sensor strain gauge on the inspection area of ​​the sample torsion beam, and then collect the load spectrum of the sample torsion beam of the tested vehicle under the actual test road conditions through the sensor strain gauge;

[0026] In step B, paste T-shaped strain rosettes on the tensile and compressive stress concentration area of ​​the sample torsion beam, paste scissor rosettes on the torsional stress concentration area, and paste uniaxial strain gauges on the one-dimensional stress concentration area; the position of the strain gauges is left-right symmetrical, The resistance of the strain gauges is 350 ohms to improve the accuracy of...

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Abstract

The invention provides an analysis method for the fatigue of a torsion beam welding assembly, which is approximate to the practical condition and has high reliability. The method comprises the following steps of: through a site test on a vehicle, acquiring the load spectrum of each main stressed point on the practical road of each testing ground; converting a stress of a sensor into an input force of a rack driving unit by using a calibrated torsion beam suspension system and a test rack; determining the test times according to test requirements; applying load to each stressed point of the torsion beam suspension system to be tested through the test rack; and feeding the test rack result back to a digital model for optimization. By the method, the project cost can be greatly saved and the development cycle is shortened. The method is close to the stressed condition in practical driving, so that the analysis result is more accurate.

Description

technical field [0001] The invention belongs to the technical field of automobile testing, and in particular relates to an analysis method for the fatigue degree of a torsion beam welding assembly. Background technique [0002] The torsion beam rear suspension has the advantages of good handling stability, easy layout, good passability, simple and reliable structure, high cost performance, and daily maintenance-free, but the development of this torsion beam suspension, especially the analysis of fatigue It is relatively complicated, and the relevant analysis methods are not perfect, and the reliability is not very high. Contents of the invention [0003] The purpose of the present invention is to propose an analysis method for the fatigue degree of torsion beam welding assembly which is close to the actual situation and has high reliability. [0004] The analysis method of the fatigue degree of the torsion beam welded assembly of the present invention comprises the follow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/04G01N3/00
Inventor 司宗正于世旭陆红军
Owner CHERY AUTOMOBILE CO LTD
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