A deterministic and statistical energy analysis of tyre cavity resonance noise

Mohamed, Zamri; Wang, Xu

doi:10.1016/j.ymssp.2015.09.012

Cited by 20 publications

(4 citation statements)

References 15 publications

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“…where for slowly varying U F one may set U F ¼ U F ðx ¼ x M Þ and take it outside the integral in Eq. (20). The essence of the approximation is that the square of the mode transfer functions rapidly varies near…”

Section: Discrete Classical Modal Analysis (Dcma)mentioning

confidence: 99%

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High Frequency Analysis of a Point-Coupled Parallel Plate System

Culver

Dowell

2017

Journal of Vibration and Acoustics

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The root-mean-square (RMS) response of various points in a system comprised of two parallel plates coupled at a point undergoing high frequency, broadband transverse point excitation of one component is considered. Through this prototypical example, asymptotic modal analysis (AMA) is extended to two coupled continuous dynamical systems. It is shown that different points on the plates respond with different RMS magnitudes depending on their spatial relationship to the excitation or coupling points in the system. The ability of AMA to accurately compute the RMS response of these points (namely, the excitation point, the coupling points, and the hot lines through the excitation or coupling points) in the system is shown. The behavior of three representative prototypical configurations of the parallel plate system considered is: two similar plates (in both geometry and modal density), two plates with similar modal density but different geometry, and two plates with similar geometry but different modal density. After examining the error between reduced modal methods (such as AMA) to classical modal analysis (CMA), it is determined that these several methods are valid for each of these scenarios. The data from the various methods will also be useful in evaluating the accuracy of other methods including statistical energy analysis (SEA).

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Section: Discrete Classical Modal Analysis (Dcma)mentioning

confidence: 99%

“…Reinforcements, discontinuities [17], and even nonlinear systems have been investigated [18,19]. After a few iterations and further refinement, these techniques are being applied to product-related problems [20,21].…”

Section: Introductionmentioning

confidence: 99%

High Frequency Analysis of a Point-Coupled Parallel Plate System

Culver

Dowell

2017

Journal of Vibration and Acoustics

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“…According to the theory of pipeline acoustics, Thompson et al 12 developed an analytic solution to predict the natural frequency of TACR noise. Combining the deterministic methods with statistical energy analysis, Mohamed and Wang [13][14][15] conducted a thorough study on the coupling phenomenon between the tire and acoustic cavity. Yang et al 16 presented a novel tire/cavity coupled model including the tread layers and sidewall in an analytical form, which can better reflect the actual tire structure.…”

Section: Introductionmentioning

confidence: 99%

Research on acoustic-structural coupling model and tire parameters of tire acoustic cavity resonance noise

Bao,

Feng,

Zhao

et al. 2023

Journal of Low Frequency Noise, Vibration and Active Control

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Tire acoustic cavity resonance (TACR) noise is one kind of low-frequency and narrowband noise that particularly annoys passengers, especially becomes more prominent in electric vehicles. This paper demonstrates a numerical investigation on the TACR noise via the acoustic-structural coupling finite element model. The accuracy of this coupling finite element model is validated both by the analytic method based on the superposition theory of traveling waves and experimental modal tests of tire cavities. According to the simulated models, the influences of external factors including the inflation pressure and road load on the TACR noise are studied. Meanwhile, as the main constituent component in the tire model, the effect of belt cord is also discussed. To design the low-TACR noise tire, various design parameters of the inner contour in tire cavity are analyzed. By the orthogonal test and range analysis, it is found that the contour parameters can slightly affect the modal frequency and sound pressure of TACR noise. Among these, the curvature radius of the tire shoulder ρ 4, tire sidewall ρ 5, and half-section height H have a more obvious influence on the TACR noise than the curvature radius of the tire crown region ρ 2 and transition region ρ 3. Meanwhile, it also illustrates that increasing the curvature radius at the tire shoulder ρ 4 and reducing the half-section height H has a reduction effect on the TACR noise. This study can contribute to the design of low road noise tires.

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“…The interaction between the rolling tyre and road surface produces noise and vibration that can be amplified by different mechanisms like resonance and horn effects (Sandberg, Ejsmont 2002). Tyre cavity resonance is an important interior noise in the range of 200…300 Hz (Tanaka et al 2016;Mohamed, Wang 2016). Also, vehicle speed, road surface material and its porosity, as well as tyre structure and tread pattern are factors influencing the tyre/road noise level (Sandberg, Glaeser 2008).…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Carriageway Operational Condition Influence on Acoustic Roadside Area Pollution

et al. 2019

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Environmental noise management is an important part of the policy across the EU policy context, because transportation noise is a significant local environmental problem for most of the urban population. Increasing numbers of vehicles are associated with growing noise levels from road transport in urban areas and rising public health problems. Motor transport is considered to be a main source of noise pollution, so it is important to investigate the level of traffic noise and assess the relationship with traffic flows. The paper describes the main methods for determination of noise characteristics of traffic flows. The dependences for the prediction of the equivalent noise level and the results of field measurements of sound levels are presented. The results of field experiments and the calculated values of sound levels obtained by the analytical method are tested for homogeneity, using the Wilcoxon test. Experimental studies have established that the external sound level depends largely on the speed of vehicles, road conditions, and basic operating characteristics of highways. The analytical method associated with the use of deterministic and probabilistic models makes it possible to predict the traffic noise. But when dealing with the foregoing methods, there arise specific problems, many of which have not been resolved: there is no uniform terminology, nor is there any consensus on the use of noise characteristics of traffic flows in calculations at different stages of construction and reconstruction of highways of a certain traffic flow model under conditions of human settlements. Standardized measurement methods have been established and revised throughout the years by many renowned researchers. These methodologies have been revised in order to minimize problems that may occur and may not be foreseen by a less experienced researcher when adopting the measurement methods. Standardizing the measurement method is also useful for researchers because it becomes possible for researchers from around the world to compare their data. The joint effect of road conditions and the operational status of the roadway on the acoustic pollution of the roadside area is not fully taken into account. Therefore, applying the internationally recognized acoustical measurement standards is a good way to start any noise measurement experiment. The purpose of experimental research is to investigate the joint effect of road conditions and the operational status of the roadway on the acoustic pollution of the roadside area of settlements: identify the main characteristics of noise produced by traffic flows, consider the comparability of results of the field experiment and analytical computations. Slopes of 20…40‰ have little impact on the noise caused by the movement of passenger cars and trucks. In this case, the average acoustic emissions are identical to those used in the prediction of noise mode.

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A deterministic and statistical energy analysis of tyre cavity resonance noise

Cited by 20 publications

References 15 publications

High Frequency Analysis of a Point-Coupled Parallel Plate System

High Frequency Analysis of a Point-Coupled Parallel Plate System

Research on acoustic-structural coupling model and tire parameters of tire acoustic cavity resonance noise

Experimental Study of Carriageway Operational Condition Influence on Acoustic Roadside Area Pollution

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