Vibro-Acoustic Numerical Analysis for the Chain Cover of a Car Engine

Armentani, Enrico; Sepe, Raffaele; Parente, Antonio; Pirelli, M.

doi:10.3390/app7060610

Cited by 17 publications

(10 citation statements)

References 14 publications

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“…A 3D tetra mesh has been used to create the acoustic mesh model. A detailed explanation of the structural analysis and acoustic analysis for interested readers can be found in [3,14,[26][27][28][29][30]. It should be noted that a wavelength is important to solve the acoustic wave equation and determine the mesh size of the acoustic regions.…”

Section: {X} + [C]mentioning

confidence: 99%

Vibro-Acoustic Numerical Simulation for Analyzing Floor Noise of a Multi-Unit Residential Structure

Park

2019

Applied Sciences

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In South Korea, the construction of new multi-unit residential structures has been continuously increasing in order to accommodate multiple households in single structures. However, the presence of walls and floors shared with neighbors makes these structures exceptionally vulnerable to floor noise transmission when the noise of everyday life occurs. In particular, South Korea has many social problems associated with such floor noise, which require the utmost attention and immediate resolution. In this study, a 17-story structure was selected as a test structure. Field measurements were carried out. A numerical model for the 17-story structure was developed in order to perform a vibro-acoustic analysis. The validation of the numerical model comparing with the field measurement data results shows a good agreement. Finally, it is concluded that numerical analysis can be applied to resolve floor noise problems arising in multi-unit residential structures.

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Section: {X} + [C]mentioning

confidence: 99%

Vibro-Acoustic Numerical Simulation for Analyzing Floor Noise of a Multi-Unit Residential Structure

Park

2019

Applied Sciences

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“…In [23], a vibro-acoustic numerical and experimental analysis was carried out for the chain cover of a low powered four-cylinder four-stroke diesel engine. By applying a methodology used in the acoustic optimization of new engine components, firstly a finite element model (FEM) of the engine was defined, then a vibration analysis was performed for the whole engine (modal analysis), and finally a forced response analysis was developed for the only chain cover (separated from the overall engine).…”

Section: The Present Issuementioning

confidence: 99%

Advances in Vibroacoustics and Aeroacustics of Aerospace and Automotive Systems

Citarella

Federico

2018

Applied Sciences

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“…Besides, the FEM/BEM method is usually used to perform the free-field sound radiation analysis of open domains. Armentani [3,4] carried out a vibroacoustic analysis for the chain cover of a four-stroke four-cylinder diesel engine through an FEM-BEM coupled approach, while Bianco [5] described an innovative integrated design verification process, based on the bridging between a new semiempirical jet noise model and a hybrid finite-element method/statistical energy analysis (FEM/SEA) approach for calculating the acceleration produced at the payload and equipment level within the structure, vibrating under the external acoustic forcing field. However, there are few studies on the vibration noise induced by the vibration of the casing in a centrifugal fan.…”

Section: Introductionmentioning

confidence: 99%

Vibroacoustic Optimization Study for the Volute Casing of a Centrifugal Fan

et al. 2019

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A numerical optimization is presented to reduce the vibrational noise of a centrifugal fan volute. Minimal vibrational radiated sound power was considered as the aim of the optimization. Three separate parts of volute panel thickness (ST: the side panel thickness; BT: the back panel thickness; FT: the front panel thickness) were taken as the design variables. Then, a vibrational noise optimization control method for the volute casing was proposed that considered the influence of vibroacoustic coupling. The optimization method was mainly divided into three main parts. The first was based on the simulation of unsteady flow to the fan to obtain the vibrational noise source. The second used the design of experiments (DoE) method and a weighted-average surrogate model (radial basis function, or RBF) with three design variables related to the geometries of the three-part volute panel thickness, which was used to provide the basic mathematical model for the optimization of the next part. The third part, implementing the low vibrational noise optimization for the fan volute, applied single-objective (taking volute radiated acoustical power as the objective function) and multi-objective (taking the volute radiated acoustical power and volute total mass as the objective function) methods. In addition, the fan aerodynamic performance, volute casing surface fluctuations, and vibration response were validated by experiments, showing good agreement. The optimization results showed that the vibrational noise optimization method proposed in this study can effectively reduce the vibration noise of the fan, obtaining a maximum value of noise reduction of 7.3 dB. The optimization in this study provides an important technical reference for the design of low vibroacoustic volute centrifugal compressors and fans whose fluids should be strictly kept in the system without any leakage.

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Vibro-Acoustic Numerical Analysis for the Chain Cover of a Car Engine

Cited by 17 publications

References 14 publications

Vibro-Acoustic Numerical Simulation for Analyzing Floor Noise of a Multi-Unit Residential Structure

Vibro-Acoustic Numerical Simulation for Analyzing Floor Noise of a Multi-Unit Residential Structure

Advances in Vibroacoustics and Aeroacustics of Aerospace and Automotive Systems

Vibroacoustic Optimization Study for the Volute Casing of a Centrifugal Fan

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