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Novel tire constraint modal testing device

A technology of testing device and constrained mode, which is applied in the direction of automobile tire testing, measuring device, impact testing, etc. It can solve the problems that the hammer cannot hit the tire, and the sensor cannot be installed for modal testing, etc., and achieves a simple structure and convenient use Effect

Pending Publication Date: 2018-01-19
AUTOMOBILE RES INST OF TSINGHUA UNIV IN SUZHOU XIANGCHENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, the tire cannot be installed with sensors for modal testing due to space constraints on the real vehicle; at the same time, in the existing modal testing device, the hammer cannot strike the tire in certain directions when there is modal hammering The problem

Method used

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Embodiment Construction

[0021] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0022] Such as Figure 1~Figure 4 As shown, the novel tire constrained modal testing device of the present invention includes a bench 1 , a jack 2 , a rigid rope 3 , a force sensor 4 and an acceleration sensor 5 .

[0023] The stand 1 is used to place the tire 100 for testing, and the stand 1 includes a support 11 and a working table 12 fixedly arranged on the top of the support 11 .

[0024] The jack 2 is used to apply load to the tire 100 , and the jack 2 is provided with a handle 21 , and the load can be applied to the tire 100 by operating the handle 21 . The rigid rope 3 is used to fix the tire 100 and transmit the load applied by the jack 2 from the rigid rope 3 to the tire 100 , and the direction of the load borne by the tire 100 is perpendicular to the extension direction of the central axis of the tire 100 .

[0025] Specifically, t...

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Abstract

The invention discloses a novel tire constraint modal testing device comprising a stand with a tire, a jack applying loads to the tire, a rigid rope used for fixing the tire and transmitting the loadapplied by the jack to the tire, a force sensor used for monitoring the tire bearing force, and an accelerometer used for testing a tire vibration modal signal; the jack is fixed on the stand; the tire central axis extension direction is vertical to the tire force bearing direction. The novel tire constraint modal testing device is simple in structure, easy to use, can accurately simulate the force bearing conditions of the tire under an actual vehicle state, and can test the frequency, vibration mode and damping of the tire under the constraint modal.

Description

technical field [0001] The invention relates to the technical field of automobile NVH, in particular to a novel tire constraint mode testing device. Background technique [0002] The vehicle acts on the force through the only component—the tire and the road surface. Therefore, the mechanical characteristics of the tire are one of the important mechanical characteristics that determine or affect the dynamic characteristics of the vehicle. With the continuous improvement of the speed of modern vehicles, the active safety, noise, driving dynamics and ride comfort of vehicles occupy an increasingly important position in vehicle performance. Tire noise has become one of the main sources of environmental noise. It has become an urgent task to reduce the noise and improve the driving performance of the vehicle. The inherent characteristics of the tire directly affect the vibration and noise of the tire and the vehicle. Therefore, the study of the vibration characteristics of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/02G01M7/08
Inventor 左佳佳
Owner AUTOMOBILE RES INST OF TSINGHUA UNIV IN SUZHOU XIANGCHENG
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