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 7 publications

(2 citation statements)

References 24 publications

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“…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

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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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“…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

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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.

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A Rapid Calculation of the Vibration of the Bridge with Constrained Layer Damping Based on the Wave and Finite Element Method

Liu,

Sun,

et al. 2024

Lecture Notes in Mechanical Engineering

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

Cited by 7 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

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

A Rapid Calculation of the Vibration of the Bridge with Constrained Layer Damping Based on the Wave and Finite Element Method

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