Using the Hybrid FE-SEA Model of a Trimmed Full Vehicle to Reduce Structure Borne Noise from 200Hz to 1kHz

Sundararajan, Prasanth; Charpentier, Arnaud; Fukui, Kazuki

doi:10.4271/2011-26-0020

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…Prasanth et al [15] made a really detailed hybrid FE-SEA investigation for a trimmed full car in 2011 with the aim to reduce structure borne noise. The authors focused on the mid-frequency range, between 200-1000 Hz and used Noise Transfer Path Analysis (NTPA) to identify the main contributors of the interior noise.…”

Section: Figure 10 Simulation and Measurement Results [31] For A Hybmentioning

confidence: 99%

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Review of Hybrid Finite Element – Statistical Energy Analysis methods in vehicle NVH predictions

Treszkai

Feszty

2019

Acta Tech Jaur

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In the vehicle industry, the noise, vibration and harshness (NVH) characteristics of a car are becoming more and more important. In order to control these, it is necessary to know the sources and contributors to the interior noise level. This paper provide an overview of the state-of-the-art on predicting the NVH characteristics of fully trimmed vehicles in the mid-frequency gap between 400 Hz to 1 kHz. It is shown that for this frequency range, typically a hybrid FE-SEA method is used. This method provides a mixture of the advantages of the deterministic and statistical approaches. The first part of the paper introduces the method, followed by an overview of the different fields of usage in the vehicle industry. At the end of the paper, gaps in the knowledge are identified.

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Section: Figure 10 Simulation and Measurement Results [31] For A Hybmentioning

confidence: 99%

“…Different hybrid solutions are being, since both acoustic and structural components can be included in the model [15]. This is a quite new method that alloys the advantages of the two methods.…”

Section: Hybrid Fe-seamentioning

confidence: 99%

Review of Hybrid Finite Element – Statistical Energy Analysis methods in vehicle NVH predictions

Treszkai

Feszty

2019

Acta Tech Jaur

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“…Shorter [14] investigated the prediction of the transmission loss of a front-of-dash component based on the hybrid method and the results obtained by simulation was in good agreement with the test. Prasanth S. [15] built the hybrid model of structure-borne noise in a fully trimmed vehicle from 200 Hz to 1000 Hz. It was shown that the hybrid model could accurately predict absolute panel vibration and cavity SPL.…”

Section: Introductionmentioning

confidence: 99%

Structural-acoustic modeling and analysis of an engineering machinery cab in the mid-frequency range

Gong¹,

Jiao²,

Nguyen³

2019

Vib. proced.

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The hybrid finite element method and statistical energy method was used to study the vibro-acoustic coupling characteristics of an engineering vehicle cab. The parameters of the statistical energy method, such as modal densities, damping loss factors and coupling loss factors of substructures, were acquired by numerical and analytical methods. The acoustic-structure coupling of the cab was established based on the modal densities of substructures. The vibration and noise excitations of the cab were measured by test and the sound pressure level response of the driver's ear was predicted. It was shown that the prediction results based on the hybrid method are in agreement with the experiments and the proposed method can be applied to predict the mid-frequency response of complex vibro-acoustic coupling systems with a moderate computational cost and accuracy.

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Mobility measurement in six DOFs applied to the hub of a car

Löfdahl¹,

Johnsson²,

Nykänen³

2014

Applied Acoustics

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Using the Hybrid FE-SEA Model of a Trimmed Full Vehicle to Reduce Structure Borne Noise from 200Hz to 1kHz

Cited by 5 publications

References 4 publications

Review of Hybrid Finite Element – Statistical Energy Analysis methods in vehicle NVH predictions

Review of Hybrid Finite Element – Statistical Energy Analysis methods in vehicle NVH predictions

Structural-acoustic modeling and analysis of an engineering machinery cab in the mid-frequency range

Mobility measurement in six DOFs applied to the hub of a car

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