Research on the vibration band gaps of isolators applied to ship hydraulic pipe supports based on the theory of phononic crystals

Wei, Zhendong; Li, Baoren; Du, Jingmin; Yang, Gang

doi:10.1051/epjap/2016150513

Cited by 8 publications

(3 citation statements)

References 13 publications

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“…This can also affect the stealth performance of the ship. Therefore, it is of great importance to propose a muffler for vibration and noise reduction in the pumping system [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Structural Optimization of a Muffler for a Marine Pumping System Based on Numerical Calculation

Liu

Lin

Hua

et al. 2022

JMSE

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In order to eliminate the noise in the pumping system and prolong the service life of the equipment, an optimization design method for a muffler structure is proposed. The inside of the muffler is designed with a water guide cone which plays the role of diverting the fluid in the pipeline. The muffler shell, the wall surface of the water guide cone, and the circular bottom plate adopt a porous structure. In order to achieve the best sound suppression effect of the muffler structure, the effects of different channel expansion angles and the flow area on the performance of muffler are studied the results show that when the flow channel expansion angle of the muffler is 145° and the flow area ratio is 3 times, the noise elimination performance of the muffler is the best. The structural optimization of the muffler studied in this paper is of great significance to noise reduction in the pumping system.

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Section: Introductionmentioning

confidence: 99%

Structural Optimization of a Muffler for a Marine Pumping System Based on Numerical Calculation

Liu

Lin

Hua

et al. 2022

JMSE

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“…In recent years, some new vibration isolators have been developed, such as the hybrid vibration isolator composed of a magnetic suspension drive and an air spring for diesel generators [2]. And for the ship hydraulic pipe frame, a composite structure vibration isolator was proposed based on the phononic crystal theory [3].…”

Section: Introductionmentioning

confidence: 99%

Research on static characteristics of the metal-rubber isolator based on Abaqus software

You

Zhao²,

Zhang³

2022

J. Phys.: Conf. Ser.

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The rubber isolator with metal embedded inside has been developed and has been used in ships. In this paper, based on Abaqus software, static characteristics of the metal-rubber isolator under rated load are calculated by finite element method. The simple deformation experimental data processing of the rubber material, the fitting method of the hyperelastic constitutive model and the model simplification of the metal-rubber isolator are described in detail. The feasibility and effectiveness of the finite element method to analyze the static characteristics of the metal-rubber isolator is verified by experiments. The conclusions obtained in this paper can provide guidance for the rapid development of serial products of the metal-rubber isolator.

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“…Periodic structure is a very fundamental model for many physical systems (Domadiya et al, 2014; Torrent and Sanchez-Dehesa, 2010; Wang et al, 2011). Periodic structures are also widely employed in applications including aircraft (Lim et al, 2020), vehicles, ships (Wei et al, 2016), and architectures (Hu et al, 2013). Recent years have witnessed the extending studies from periodic structures to metamaterials (Fedorin et al, 2014; Jamshidian et al, 2020; Ning et al, 2020), that is, a type of artificial composite materials with unusual properties.…”

Section: Introductionmentioning

confidence: 99%

Harmonic and shock wave propagation in bistable periodic structure: Regularity, randomness, and tunability

Liu

Fang

Wen

2021

Journal of Vibration and Control

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Nonlinear periodic structures can present abundant nonlinear wave physics. The model consisting of periodic bistable oscillators (i.e., the bistable periodic structure) is essentially different from those nonlinear periodic systems consisting of monostable oscillators due to multiple equilibria in bistable periodic structure. Despite the extensive attention received, properties of harmonic and shock wave propagation in bistable periodic structure, especially the randomness and tunability behind regularity, have not been fully understood. This article reports the answers based on numerical method. We consider the varying trends of the band gap, vibration center, wave amplitude, and transmission and show their effects on energy transport. We find that the snap-through behavior always presents local intrinsic randomness with the regularity in whole, that is, it does not happen in sequence. For both harmonic and shock wave, most energy is localized inside the snap-through oscillators that changes the regularity for energy transport and is meaningful for shock wave protection. Bistable periodic structure can present very low-frequency and broadband wave attenuation by shifting the initial frequency of the band gap to nearly zero through tuning the wave amplitude to a critical value, which offers dynamic tunability. The damping and intensity of the shock pulse have significant effects on the shock wave propagation. This work provides guidance for the design and application of bistable periodic structure for elastic wave attenuation and shock wave protection.

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Research on the vibration band gaps of isolators applied to ship hydraulic pipe supports based on the theory of phononic crystals

Cited by 8 publications

References 13 publications

Structural Optimization of a Muffler for a Marine Pumping System Based on Numerical Calculation

Structural Optimization of a Muffler for a Marine Pumping System Based on Numerical Calculation

Research on static characteristics of the metal-rubber isolator based on Abaqus software

Harmonic and shock wave propagation in bistable periodic structure: Regularity, randomness, and tunability

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