Verification of Vibration Isolation Effectiveness of the Underwater Vehicle Power Plant

Yang, Yang; Pan, Guang; Yin, Shougen; Yuan, Ying; Huang, Qiaogao

doi:10.3390/jmse9040382

Cited by 10 publications

(4 citation statements)

References 25 publications

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“…Yang et al [8] enhance the vibration isolation effectiveness of an underwater vehicle power plant and alleviate the mechanical vibration of the outer housing; initially, discrete vibration isolators were improved, and three new types of ring vibration isolators were designed, i.e., ring metal rubber isolators, magnesium alloy isolators, and modified ultra-high polyethylene isolators (MUHP). A vibrator excitation test was carried out, and the isolation effectiveness of the three types of vibration isolators was evaluated, adopting insertion loss and vibration energy level drop.…”

Section: Papers Detailsmentioning

confidence: 99%

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Marine Power Systems

Poljak

2022

JMSE

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Section: Papers Detailsmentioning

confidence: 99%

“…The second important thing is the reliability of such systems. As ships and submarine machines [7,8] are far away from available services, their machinery must be reliable in operation. For example, the failure of turbocharger of the standby generator could cause blackout and loss of propulsion [9].…”

Section: Introductionmentioning

confidence: 99%

Marine Power Systems

Poljak

2022

JMSE

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“…Vibration experimental techniques involve measuring the vibration response of a system, which can provide insight into the system's behaviors. 9,10 Yang et al 11 conducted an experiment to determine the effect of the isolator of an underwater vehicle power plant. Wu and Too 12 measured the sound radiation of a cylinder under continuous vibration excitation in a water tank.…”

Section: Introductionmentioning

confidence: 99%

Vibration Analysis and Suppression Methods of the Wing of an Underwater Glider

Guo,

Liu,

Song

et al. 2023

The International Journal of Acoustics and Vibration

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Vibration analysis and suppression methods are widely studied in mechanical systems. In this study, rubber damping materials were employed to enhance the vibration suppression performance of the wing of an underwater glider. A finite element model was established to analyze the vibration characteristics of the wing. The excitation characteristics of the actuator were determined by experimental methods. The wet mode shapes and corresponding frequencies of the wing of the underwater glider were investigated. The vibration suppression performance of rubber damping materials with different thickness and hardness was discussed. The optimal parameters of the rubber pads on various positions were provided to minimize the excitations from the actuator. This paper provides valuable insights for developing vibration suppression techniques for the wings of an underwater glider.

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“…Rubber isolators are widely used for the high-precision equipment of autonomous underwater vehicles, air-sea amphibious aircraft, and other underwater vehicles in reducing dynamic loads originating from environmental excitations [1][2][3][4],which always include stationary vibration and transient impulse.Compared to the stationary vibrations with limited amplitude and continuous duration, rubber isolators exhibit stronger nonlinear characteristics induced by shock pulse with high amplitude and short duration [5]. Furthermore, the materials used in the isolator are often sensitive to manufacturing processes and may be non-homogenous and anisotropic.…”

Section: Introductionmentioning

confidence: 99%

A Nonlinear Model and Parameter Identification Method for Rubber Isolators under Shock Excitation in Underwater Vehicles

Xiao

Wang

et al. 2021

JMSE

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Rubber isolators are usually used to protect high-precision equipment of autonomous underwater vehicles (AUVs), avoiding damage from overlarge dynamic excitation. Considering the nonlinear properties of the rubber material, the nonlinear behavior of rubber isolators under shock exaltation is hard to be predict accurately without the available modal and accurate parameters. In view of this, the present study proposes a nonlinear model and parameter identification method of rubber isolators to present their transient responses under shock excitation. First, a nonlinear model of rubber isolators is introduced for simulating their amplitude and frequency-dependent deformation under shock excitation. A corresponding dynamic equation of the isolation system is proposed and analytically solved by the Newmark method and the Newton-arithmetic mean method. Secondly, a multilayer feed-forward neural network (MFFNN) is constructed with the current model to search the parameters, in which the differences between the estimated and tested responses are minimized. The sine-sweep and drop test are planned with MFFNN to build the parameter identification process of rubber isolators. Then, a T-shaped isolator composed of high-damping silicon rubber is selected as a sample, and its parameters were determined by the current identification process. The transient responses of the isolation system are reconstructed by the current mode with the identified parameter, which show good agreement with measured responses. The accuracy of the proposed model and parameter identification method is proved. Finally, the errors between the reconstructed responses and tested responses are analyzed, and the main mode of energy attenuation in the rubber isolator is discussed in order to provide an inside view of the current model.

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Verification of Vibration Isolation Effectiveness of the Underwater Vehicle Power Plant

Cited by 10 publications

References 25 publications

Marine Power Systems

Marine Power Systems

Vibration Analysis and Suppression Methods of the Wing of an Underwater Glider

A Nonlinear Model and Parameter Identification Method for Rubber Isolators under Shock Excitation in Underwater Vehicles

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