Acoustic Radiation and Dynamic Study of a Steel Beam Damped with Viscoelastic Material

Liu, Quanmin; Li, Xiaozhen; Peipei, XU; Liu, Linya; Zhou, Yunlai

doi:10.1007/s12205-020-1969-y

Cited by 9 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Li et al 30 experimentally investigated the influence of CLD on natural frequencies, mode shapes and damping ratios of a thin cylindrical shell. Liu et al 31 conducted a series of hammer tests to identify the modal parameters and assess the vibro-acoustic response of an H-shaped steel beam damped with constrained layer damping. Kumar et al 32 attached CLD patches to the target locations where the modal strain energy is maximum for specified mode.…”

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

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

Self Cite

View full text Add to dashboard Cite

show abstract

“…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).…”

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

“…16 However, it is difficult to ensure close adhesion between damping layers and bridge components under long-term train-induced vibration loads. Moreover, although existing approaches can be used to control bridge vibration and noise to a reasonable extent, 17 they have disadvantages that include material aging characteristics, poor manual adjustment, and narrow effective frequency bands.…”

Section: Introductionmentioning

confidence: 99%

Flexural wave band gaps of steel bridge decks periodically stiffened with U-ribs: Mechanism and influencing factors

Zhang

Hao

Luo

et al. 2022

Journal of Low Frequency Noise, Vibration and Active Control

View full text Add to dashboard Cite

To effectively and efficiently control vibrations in steel bridge decks, the flexural wave band gap and vibration attenuation mechanism are studied. The band structures and displacement fields of the eigenmodes at the band gap edges of infinite periodic U-rib stiffened plates are calculated. The calculation method is combining the finite element method with Bloch periodic boundary conditions. A scaled specimen test of a finite periodic U-rib stiffened plate is used to validate the numerical results. A comparison of results confirms that introducing the U-rib allows the periodic U-rib stiffened plates to yield several flexural wave band gaps. In the band gaps, flexural wave propagation is stopped and clear flexural vibration suppression is achieved. Furthermore, the effects of geometric parameters and structural schemes on the flexural wave band gaps are analyzed in detail. Finally, by analyzing a specific case, it is demonstrated that the flexural wave band gaps and vibration attenuation properties can be controlled. This provides a new approach to vibration and noise control in steel bridges.

show abstract

Acoustic Radiation and Dynamic Study of a Steel Beam Damped with Viscoelastic Material

Cited by 9 publications

References 24 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

Flexural wave band gaps of steel bridge decks periodically stiffened with U-ribs: Mechanism and influencing factors

Contact Info

Product

Resources

About