Numerical Predictions of the Vibro-Acoustic Transmission Through the Side Window Subjected to Aerodynamics Loads

Binet, Dimitri; Herpe, François van

doi:10.1007/978-3-030-64807-7_14

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…The numerical model is provided by the use of the commercial software ACTRAN, within the VSEA module. An example of a SEA model using the software ACTRAN can be seen in [12]. The objective of this study is to establish a numerical model to evaluate the sound pressure level at high frequencies within the aircraft cabin in airplane operation (AP) mode.…”

Section: Statistical Energy Analysis (Sea)mentioning

confidence: 99%

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Using a Statistical Energy Analysis Approach For a Tilt-rotor Aircraft: A Comparative Study with ATPA Results

Sohrabi,

Cierco,

Segura

et al. 2024

Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023

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In industrial projects involving complex structures, the numerical simulation may help to reduce the time and cost of the project. In this study, Virtual Statistical Energy Analysis (VSEA) proposed by Actran is used to simulate the vibroacoustic behavior of a tilt-rotor aircraft and to predict the sound pressure level inside the cavity of the aircraft. To this end, experimental measurements are performed to provide several inputs for the simulation. The internal cabin is divided into subsystems following the Advanced Transfer Path Analysis (ATPA) approach. The frequency-dependent damping loss factors of the panels are calculated through the decay rate method from impact tests experimental data. Moreover, the operational forces applied to the system are obtained by measuring the accelerance FRFs and the acceleration in operative conditions. An extrapolation method is used to obtain results in a mid-high frequency range. The resulting sound pressure level inside the cavity of the aircraft is compared with the structureborne noise calculated by ATPA in a range of frequency from 900 to 4000 Hz.

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Section: Statistical Energy Analysis (Sea)mentioning

confidence: 99%

“…When the dynamic range does not allow for a decay of 60 dB, a lower range of dB might be used. The damping is defined as (12) where is the angular frequency and the numerator represents the average of α = Δln(Acceleration)/T60 from several impacts.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Using a Statistical Energy Analysis Approach For a Tilt-rotor Aircraft: A Comparative Study with ATPA Results

Sohrabi,

Cierco,

Segura

et al. 2024

Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023

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show abstract

“…Bearing in mind these assumptions, this study modeled a fuselage section of a tiltrotor aircraft using ACTRAN, within the VSEA module. The power injection method (PIM) is employed within this module to virtually excite all modes of a subsystem [16,17].…”

Section: Sea Modelmentioning

confidence: 99%

A Comparative Study of a Hybrid Experimental–Statistical Energy Analysis Model with Advanced Transfer Path Analysis for Analyzing Interior Noise of a Tiltrotor Aircraft

Sohrabi,

Segura Torres,

Cierco Molins

et al. 2023

Applied Sciences

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The excessive noise present within an aircraft cabin during flight operations constitutes a notable origin of fatigue, stress, and communication impediments for both pilots and passengers. Ensuring the comfort, well-being, and safety of passengers and crew members necessitates the accurate anticipation of noise levels. This study concerns the computation of structure-borne noise levels within the cabin of a tiltrotor aircraft. This investigation employed two distinct methodologies: advanced transfer path analysis (ATPA) and statistical energy analysis (SEA). To assess the results obtained with the ATPA approach, the acquired outcomes were compared with empirically measured sound pressure levels during airplane mode operations. The contributions of air-borne and structure-borne noises were calculated with the ATPA methodology. On the other hand, the structure-borne noise was calculated with a hybrid experimental–SEA model with ACTRAN software, and its results were compared with those of the ATPA method. The results show a good agreement between these methods at high frequencies, while at low frequencies, certain adjustments or modifications to the SEA model are necessary to predict the noise levels.

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Quasi-analytical approach for sound radiation from turbulent boundary layer excited panel

Joshi

2024

AIAA SCITECH 2024 Forum

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Numerical Predictions of the Vibro-Acoustic Transmission Through the Side Window Subjected to Aerodynamics Loads

Cited by 3 publications

References 8 publications

Using a Statistical Energy Analysis Approach For a Tilt-rotor Aircraft: A Comparative Study with ATPA Results

Using a Statistical Energy Analysis Approach For a Tilt-rotor Aircraft: A Comparative Study with ATPA Results

A Comparative Study of a Hybrid Experimental–Statistical Energy Analysis Model with Advanced Transfer Path Analysis for Analyzing Interior Noise of a Tiltrotor Aircraft

Quasi-analytical approach for sound radiation from turbulent boundary layer excited panel

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