Simplified Modelling of Vehicle Interior Noise: Comparison of Analytical, Numerical and Experimental Approaches

Георгиев,; Krylov,; Winward,

doi:10.1260/147547307781485441

Cited by 5 publications

(5 citation statements)

References 9 publications

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“…As shown in Figure 1, vehicle cabins are modeled as rectangular cavities consisting of five rigid walls and a flexible plate on which the engine is connected. In such investigations, this type of modeling approach is quite common in the literature [38][39][40]. In a four-stroke engine, the engine RPM is related to its fundamental frequency as follows:…”

Section: Analytical Solution Based On Modified Modal Interaction Methodsmentioning

confidence: 99%

A PSO-based computational framework to design active noise cancelation systems for smart vehicle enclosures

Porghoveh

Shirazi

Messia

et al. 2022

Mathematics and Mechanics of Solids

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In this study, active noise cancelation (ANC) systems are developed by a computational optimization framework based on particle swarm optimization (PSO), aiming to attenuate engine noise inside smart cubic vehicle enclosures. To have rapid estimation of acoustic properties, the main PSO algorithm is coupled with an analytical solution based on modified modal interaction method to evaluate the cost function. The optimum configurations, i.e., best positions and volume velocities of secondary sound sources, are defined for each resonant frequency. For numerical simulations, two vehicle enclosures of different size are considered to assess the applicability of the optimization algorithm. The overall performance of determined ANC systems is investigated, and it is shown that substantial noise reduction is achieved.

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Section: Analytical Solution Based On Modified Modal Interaction Methodsmentioning

confidence: 99%

A PSO-based computational framework to design active noise cancelation systems for smart vehicle enclosures

Porghoveh

Shirazi

Messia

et al. 2022

Mathematics and Mechanics of Solids

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“…The key parts of the body frame 11 – referred to here as A pillar, B pillar, and C pillar – are shown in Figure 2(a). For example, on the left side of the vehicle cabin the three serial numbers and related coordinate values of A pillar are organized as 5(1.1, 0.0, 1.2), 1(0.3, 0.0, 1.1) and 2(0.0, 0.0, 8.0) respectively; similarly, two serial numbers and related coordinate values of B pillar are organized as 4(1.1, 0.0, 0.0) and 5(1.1, 0.0, 1.2), and another two serial numbers and related coordinate values of C pillar are organized as 6(1.8, 0.0, 1.2) and 7(1.8, 0.0, 0.0).…”

Section: Noise Mechanism Analysis For Vehicle Cabin and Frameworkmentioning

confidence: 99%

Diagnosis and analysis of abnormal noise in the pure electric vehicle’s air condition compressor at idle

Zhiwei

Yigang

2018

Journal of Low Frequency Noise, Vibration and Active Control

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A pure electric vehicle may produce an abnormal 'clicking noise' when idling, especially as start-up, which can be a serious problem in terms of product performance. In this paper: (1) professional evaluators carry out subjective evaluations and the abnormal noise-generation mechanism and its transfer path are analysed; (2) the mode shape and sound pressure distribution are both simulated using the finite element method; (3) the AC compressor's sound source is identified and located in the main frequency domain using the acoustic array and image formation method, so vibration and interior vehicle noise measurements from the compressor are carried out; and (4) based on the established causes of the abnormal noise, three effective approaches-structure reinforcement, manufacturing process improvement and start-up control optimization-are presented to help prevent abnormal noises from the AC compressor.

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“…In the industry, physical prototypes are usually not available in the design phase and justifying for a mock-up to be fabricated solely for noise and vibration studies may sometimes be difficult due to additional design cost. With this in mind, researchers [Georgiev et al, 2006a[Georgiev et al, , 2006bKrylov et al, 2003;Krylov, 2002Krylov, , 2004 proposed to apply dimensional analysis to obtain a simpler downscale model of an automobile, which possesses a different cabin shape as the original. The downscale model allows them to perform prediction of cabin noise and correlate the results back to the full-scale cabin.…”

Section: Dimensional Analysismentioning

confidence: 99%

Acoustic Metamaterials: A Potential for Cabin Noise Control in Automobiles and Armored Vehicles

Ang

Koh²,

Lee

2016

Int. J. Appl. Mechanics

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The aim of this paper is to provide an overview of the existing industrial practices used for cabin noise control in various industries such as automotive, marine, aerospace, and defense. However, emphasis is placed on automobiles and armored vehicles. Generally, automobile cabins usually constitute of thin structural panels, where the fundamental frequency typically falls below 200[Formula: see text]Hz. If a specific structural mode couples with a specific acoustic mode of the cabin, booming noise occurs. As such, discomfort may be felt by the occupants. Fundamentally, vibroacoustics problems may be minimized if the acoustic modes and the structural modes are decoupled, which is achieved usually by structural modifications or acoustical treatments. However, if excessively performed, the weight limitation of an automobile design will be exceeded; not to mention the adverse effect of increased weight on several factors such as fuel efficiency, mileage life of tires and acceleration of the vehicle. Moreover, current solutions have several drawbacks in low frequency noise control. In light of this, it is of great interest to explore the feasibility of acoustic metamaterials as an alternative with hope to improve cabin noise.

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Simplified Modelling of Vehicle Interior Noise: Comparison of Analytical, Numerical and Experimental Approaches

Cited by 5 publications

References 9 publications

A PSO-based computational framework to design active noise cancelation systems for smart vehicle enclosures

A PSO-based computational framework to design active noise cancelation systems for smart vehicle enclosures

Diagnosis and analysis of abnormal noise in the pure electric vehicle’s air condition compressor at idle

Acoustic Metamaterials: A Potential for Cabin Noise Control in Automobiles and Armored Vehicles

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