A hybrid IMSE-FE-BE method coupled with RSM for vibro-acoustic analysis and optimization of an I-shaped steel beam damped with constrained layer damping

Li, Xiaozhen; Jiang, Xihao; Li, Haoqing; Liu, Quanmin

doi:10.1016/j.apacoust.2022.109098

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…Constrained layer damping (CLD), as an effective technology to control vibration and noise, has gained increasing attention in recent years. [12][13][14][15][16] CLD structures are usually composed of a damping layer sandwiched between two elastic layers, in which the vibration energy is mainly dissipated through the alternating shear deformation of the middle layer, thereby effectively reducing the vibration level. With its excellent damping effect, CLD has been widely used in applications related to marines, vehicles and aerospace industries, but there is still a lack of its investigation and application in rail transit bridge engineering.…”

Section: Introductionmentioning

confidence: 99%

A combined iterative complex eigenvalue method and finite element-boundary element method for acoustic analysis of the railway steel bridge deck damped with constrained layer damping

Jiang,

Li,

et al. 2023

Jnl of Sandwich Structures & Materials

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This paper presents a combined method to predict structure-borne noise from the railway steel bridge deck damped with constrained layer damping (CLD), in which the frequency-dependent properties of the viscoelastic material are accurately considered through the iterative complex eigenvalue method (ICEM). Then, a 1:4 steel bridge deck model is designed and manufactured, and a series of hammer tests of the CLD-damped steel bridge deck are carried out in a semi-anechoic chamber to verify the proposed method. Then, the noise reduction effect of CLD is discussed in detail. It shows that the overall SPLs at the near field point S-3 and the far field point S-8 are reduced by 7.5 dB and 11.1 dB, respectively, and the noise attenuation rate along with distance is also improved significantly after damped with CLD. Finally, the influences of the key design parameters of CLD on noise reduction are quantitatively analyzed, so as to provide reference for the research and application of CLD in railway bridge engineering.

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Section: Introductionmentioning

confidence: 99%

A combined iterative complex eigenvalue method and finite element-boundary element method for acoustic analysis of the railway steel bridge deck damped with constrained layer damping

Jiang,

Li,

et al. 2023

Jnl of Sandwich Structures & Materials

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“…In recent years, steel structures are increasingly favored in the field of urban rail transit and bridges on account of their benefits such as high strength, light weight, and strong crossing ability (Liang et al, 2019; 2020; Liu et al, 2020; Zhang et al, 2021). However, compared with the traditional concrete bridges, the noise problem caused by trains passing through the steel bridges is much more serious by reason of the so-called “structure-borne noise,” which is generally accompanied by wide spectrums, large amplitudes, and other properties (Janssens and Thompson, 1996; Lei, 2019; Li et al, 2022). For further promoting the development and application of steel bridges, the vibration and noise problems must be effectively solved.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation on the vibro-acoustic characteristics of periodic rib stiffened plate based on band gap theory

Jiang

et al. 2023

Journal of Vibration and Control

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This study presents a novel method for analyzing the vibration and noise from the periodic rib stiffened plate (PRSP). For the first time, the band gap theory was combined with hybrid finite element-boundary element method (FE-BEM) to predict the vibro-acoustic characteristics of this structure and guide its vibration and noise reduction design from the perspective of bending wave propagation. The excitation test was carried out simultaneously to verify the rationality and accuracy of the proposed method. Then, the acoustic contribution analysis was conducted and the influence of structural design parameters on bending wave bandgap and noise reduction effect was discussed in detail. The results show that there are alternating passbands and stopbands for bending waves propagating in PRSP, making the vibro-acoustic responses in different frequency bands exhibit distinct differences as well. Increasing the base plate thickness and decreasing the rib spacing are conducive to widen the bandgaps and reduce the noise radiation, which are the decisive factors affecting the vibro-acoustic characteristics of PRSP. While the rib thickness has little effect, this provides a new approach for vibration mitigation and acoustic optimization in steel bridges.

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Noise reduction mechanism of high-speed railway box-girder bridges installed with MTMDs on top plate

Zhang,

Yang

et al. 2024

Railw. Eng. Sci.

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The issue of low-frequency structural noise radiated from high-speed railway (HSR) box-girder bridges (BGBs) is a significant challenge worldwide. Although it is known that vibrations in BGBs caused by moving trains can be reduced by installing multiple tuned mass dampers (MTMDs) on the top plate, there is limited research on the noise reduction achieved by this method. This study aims to investigate the noise reduction mechanism of BGBs installed with MTMDs on the top plate. A sound radiation prediction model for the BGB installed with MTMDs is developed, based on the vehicle–track–bridge coupled dynamics and acoustics boundary element method. After being verified by field tested results, the prediction model is employed to study the reduction of vibration and noise of BGBs caused by the MTMDs. It is found that installing MTMDs on top plate can significantly affect the vibration distribution and sound radiation law of BGBs. However, its impact on the sound radiation caused by vibrations dominated by the global modes of BGBs is minimal. The noise reduction achieved by MTMDs is mainly through changing the acoustic radiation contributions of each plate of the bridge. In the lower frequency range, the noise reduction of BGB caused by MTMDs can be more effective if the installation of MTMDs can modify the vibration frequency and distribution of the BGB to avoid the influence of small vibrations and disperse the sound radiation from each plate.

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A hybrid IMSE-FE-BE method coupled with RSM for vibro-acoustic analysis and optimization of an I-shaped steel beam damped with constrained layer damping

Cited by 5 publications

References 32 publications

A combined iterative complex eigenvalue method and finite element-boundary element method for acoustic analysis of the railway steel bridge deck damped with constrained layer damping

A combined iterative complex eigenvalue method and finite element-boundary element method for acoustic analysis of the railway steel bridge deck damped with constrained layer damping

Experimental and numerical investigation on the vibro-acoustic characteristics of periodic rib stiffened plate based on band gap theory

Noise reduction mechanism of high-speed railway box-girder bridges installed with MTMDs on top plate

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