Body Fatigue Test Device and Test Method

A fatigue test and vehicle body technology, applied in the field of vehicle testing, can solve the problems of single loading and stress, cumbersome loading process, prolonging the test cycle, etc., achieve high accuracy and reliability, improve test accuracy, and shorten the test cycle Effect

Active Publication Date: 2021-03-09
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the bench tests are still limited to loading with constant amplitude load spectrum, but because of the single loading stress situation and the inability to reflect the real stress situation of the road, reliable test results cannot be obtained, and the entire test cycle is also prolonged
The traditional bench test device for road simulation load spectrum is not only cumbersome to install, but also the structure of the traditional loading test device and the design of the transmission path of the loading force cannot achieve the purpose of truly reflecting the force of the road, so that the test cannot be guaranteed. Accuracy and Reliability of Results

Method used

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  • Body Fatigue Test Device and Test Method
  • Body Fatigue Test Device and Test Method

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Experimental program
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Effect test

Embodiment 1

[0050] At present, most vehicle fatigue gantry tests are still limited to the use of equal load spectrum loading, but due to its single-load force, it is unable to reflect the true force of the road, which will result in unable to obtain reliable test results, and also extend Whole test cycle. The traditional road analog load spectrum of the gantry test device not only carries the process of cumbersome, but also the design of the structure of the traditional loading test device and the transmission path of the loading power, it is not possible to achieve the purpose of the truth, so that the test is not guaranteed. The accuracy and reliability of the results.

[0051] In addition, with the continuous improvement of the vehicle structure, the devices and test systems in the gantry trial also put forward higher requirements. In particular, most vehicles in China have not set up traction mechanisms, only in special cases, if they need to pull or drag the vehicle or items, they need t...

Embodiment 2

[0072] The present invention also provides a body fatigue test method, at least the steps of:

[0073] The first end of the fixed body 10 is fixed to the constraint mechanism 100;

[0074] The two end portions of the transition member 210 in the transition mechanism 200 are connected to both sides of the second end of the vehicle body 10, and the end of the hinged member 220 in the transition mechanism 200 is connected to the non-end portion of the transition member 210, and adjusts the corresponding Torque;

[0075] According to the preset load spectrum, the adjustment load mechanism 300 treats the loading load of the test body 10, and hinges the loading mechanism 300 to the other end of the hinged piece 220 in the transition mechanism 200, respectively;

[0076] The final drive signal is obtained according to the preset loading spectrum, and the fatigue test is performed.

[0077] Next, the fatigue test of the rear end of the white car body is tested as an example, and the body ...

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Abstract

The invention discloses a vehicle body fatigue test device and a test method. The test device includes a restraint mechanism for constraining and supporting the first end of the vehicle body to be tested; a loading mechanism comprising at least two loading sub-mechanisms. Loading is applied to the vehicle body to be tested according to the preset loading spectrum; the transition mechanism is arranged between the restraining mechanism and the loading mechanism, and includes a transition piece and a hinge, and the two ends of the transition piece are connected to the second body of the vehicle body to be tested respectively. One end of the hinge is connected to the non-end of the transition piece, and the other end is hinged to the loading mechanism. The vehicle body fatigue test device and test method of the present invention can realize the local fatigue test of the vehicle body to be tested under the load condition, improve the test accuracy, and shorten the test period.

Description

Technical field [0001] The present invention relates to the field of vehicle testing, and more particularly to a body fatigue test device and a test method. Background technique [0002] In the automotive industry, reliable performance is one of the important indicators of measuring vehicle performance. According to incomplete statistics, at least 90% of the parts in the automobile are caused by fatigue damage. In the automotive development phase, it is necessary to predict, optimize, and fatigue test validation of vehicle fatigue life to ensure that the vehicle structure design can meet the loss of fatigue damage during reasonable life. [0003] At present, the fatigue test of the vehicle is mainly a gantry test method, which may include equal load spectrum, road simulation load spectrum, and random load spectrum. Most gathering tests are still limited to the use of equal load spectrum loading, but due to their single load force, it is unable to reflect the true force of the roa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/007
Inventor 周兆耀周文件刘如意王海沛
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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