Tread pattern groove pumping noise source recognition method

A tire pattern and sound source recognition technology, which is applied in the direction of automobile tire testing, special data processing applications, instruments, etc., can solve the problem of not being able to clearly indicate the location of the noise

Active Publication Date: 2015-02-11
AEOLUS TIRE
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Problems solved by technology

[0005] Jiangsu University's master thesis "Research on Pumping Noise of Tire Transverse Pattern Groove Based on FSI Method" and "Research on Calculation Method of Tire Pumping Noise and Its Noise Reduction" also used numerical calculation methods to study the influence of tread stru...

Method used

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  • Tread pattern groove pumping noise source recognition method
  • Tread pattern groove pumping noise source recognition method
  • Tread pattern groove pumping noise source recognition method

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Embodiment

[0069] Embodiment: The present invention takes the pattern structure of 205 / 55R16 tire Steering Ace AU01 as an example, as figure 1 , figure 2 and image 3 As shown, the flow chart of the identification method of groove noise sound source based on CFD dynamic mesh technology. Firstly, the finite element model of the tire with mixed pattern is established, and the static load analysis of the tire is carried out to obtain the static mechanical analysis of the tire, and then the steady-state rolling of the tire is realized by the ALE method, and then the steady-state calculation result file is converted as the transient calculation The initial state calculates the transient rolling, and obtains the change information of the groove volume over time under the dynamic force of the tire. Finally, the volume change of the groove in the docking area is applied as the boundary condition to realize the velocity and turbulent kinetic energy flow in the process of air pumping inside the ...

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Abstract

The invention discloses a tread pattern groove pumping noise source recognition method which comprises the following steps: (1) establishing a tire-road surface finite element model with mixed patterns, calculating tire static load and carrying out mechanical analysis; (2) carrying out kinetic analysis under the stable state and the transient rolling state of a tire; (3) establishing a pattern groove noise numerical model at the ground connection area; (4) analyzing the flow field characteristics in the patter groove; (5) establishing the relation between the flow field and the sound field by adopting a vortex sound theory, and solving Lamb vector to obtain the distribution position of a pattern groove pumping noise source. The tread pattern groove structure is improved at the position where the noise is produced, and tread pattern groove pumping noise source recognition is carried out again until the design requirements of the noise are reached. The distribution position of the pattern groove noise source is recognized on the basis of the vortex sound theory in the rolling process of the tire, so that the aim of reducing the tread pattern groove noise can be achieved by controlling the sound source, and a guidance is provided for the design of the low-noise tread pattern.

Description

technical field [0001] The invention relates to a design method of a vehicle tire, in particular to a method for identifying and improving a tire pattern groove noise sound source. Background technique [0002] Tire noise is one of the four major noise sources of automobiles, accounting for as much as 40%, and it continues to increase with the increase of driving speed. Studies have shown that when the speed of passenger cars exceeds 50km / h, and the speed of trucks exceeds 70km / h, tire noise will stand out and quickly occupy the main position of vehicle noise sources. In order to limit the size of tire noise, EC1222 / 2009 "Tire Labeling on Fuel Efficiency and Other Parameters" promulgated by the European Union in 2009 proposed specific limits and implementation dates for tire noise, rolling resistance, and wet road grip performance, and It was officially implemented on July 1, 2012. Japan, South Korea, the United States and other countries have also formulated and implement...

Claims

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Application Information

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IPC IPC(8): G01M17/02G06F17/50
CPCY02T90/00
Inventor 周海超王国林杨建梁晨李昭李国瑞薛开鑫
Owner AEOLUS TIRE
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