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Parameter design method of tire cavity resonance noise attenuation device

A resonance noise and parameter design technology, which is applied to tire parts, calculation, transportation and packaging, etc., can solve problems such as increasing fuel consumption and cost, failing to achieve noise reduction, and affecting wheel weight

Active Publication Date: 2019-04-19
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to reduce the noise of pneumatic tires, there are currently related technical solutions for disposing sound-absorbing materials in the tire cavity, and the sound-absorbing effect of the sound-absorbing material is used to reduce the noise of the tire cavity; however, the mass of the sound-absorbing material will affect the weight of the wheel, increase fuel consumption and cost , and if the quality is too small, the effect of noise reduction cannot be achieved; in the prior art, how to effectively select the size of the sound-absorbing material and the material characteristic parameters for reducing the quality of the sound-absorbing material and reducing the noise has not been publicly reported so far.

Method used

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  • Parameter design method of tire cavity resonance noise attenuation device
  • Parameter design method of tire cavity resonance noise attenuation device
  • Parameter design method of tire cavity resonance noise attenuation device

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Embodiment Construction

[0054] see figure 1 In the present embodiment, the pneumatic tire refers to the pneumatic tire 3 formed with the tire cavity 9 jointly by the inner surface 4a of the tire and the rim 2a; the pneumatic tire 3 is installed on the rim 2a and supported by the spokes 2b; the pneumatic tire 3 includes: The face portion 4, the bead portions 6 on the left and right sides, and the sidewall portions 5 on the left and right sides connecting the tread portion 4 and the bead portions 6 extend inside the tire between the left and right bead portions 6. The carcass 7 is provided with a belt 8 on the carcass outer peripheral side of the tread portion 4, and the pneumatic tire 3 is attached to a wheel so that the cavity of the pneumatic tire 3 is sealed via the rim 2a.

[0055] figure 1 The shown tire cavity is an annular tire cavity 9 formed jointly by the tire inner surface 4a and the rim 2a. The tire cavity resonance noise reduction device is a porous material installed on the tire inner s...

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Abstract

The invention discloses a parameter design method of a tire cavity resonance noise attenuation device. According to the parameter design method, porous materials used by the tire cavity resonance noise attenuation device are equivalent to fluid meeting a Delany-Bazley theoretical model, a characteristic equation of sound pressure in a tire cavity is calculate according to boundary conditions existing in the tire cavity, cavity resonance frequency and a characteristic value corresponding to the cavity resonance frequency are acquired according to the characteristic equation of the sound pressure, and the thickness and the flow resistance rate of the porous materials are designed. According to the method, parameter selection and design of the noise attenuation device is more optimized when tire cavity resonance noise is effectively reduced, and bases are provided for material parameter design of the tire cavity resonance noise attenuation device.

Description

technical field [0001] The invention relates to the noise control of automobile tires, in particular to a parameter design method of a tire cavity resonance noise attenuation device. Background technique [0002] When the vehicle is running, the tires are excited by the ground to generate noise, and the resonance of the tire cavity will bring obvious and sharp noises. The resonance noise of the pneumatic tire cavity directly affects the driving comfort of the vehicle. The resonance noise of the pneumatic tire cavity is due to the fact that when the car is running, when the road surface is uneven, the road will excite the tire surface, causing the tire surface to vibrate, which in turn makes the air inside the tire vibrate. When the air vibration reaches the resonance frequency It will lead to cavity resonance, resulting in large cavity resonance noise, causing great discomfort to drivers and passengers; the cavity resonance frequency of pneumatic tires is closely related to...

Claims

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Application Information

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IPC IPC(8): B60C19/00G06F17/50
CPCB60C19/002G06F30/17Y02T90/00
Inventor 张永斌姚琦毕传兴张小正李宁学肖磊
Owner HEFEI UNIV OF TECH
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