Application of a dynamic antiresonant vibration isolator to minimize the vibration transmission in underwater vehicles
Autor: | Xingjian Dong, Caiyu Yin, Niuniu Liu, Hongxing Hua, Chenyang Li |
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Rok vydání: | 2017 |
Předmět: |
Vibration transmission
Computer science business.industry Mechanical Engineering Acoustics Propeller Mode (statistics) Aerospace Engineering 02 engineering and technology Structural engineering 01 natural sciences Vibration Dynamic Vibration Absorber 020303 mechanical engineering & transports Vibration isolation 0203 mechanical engineering Mechanics of Materials 0103 physical sciences Automotive Engineering Harmonic General Materials Science Underwater business 010301 acoustics |
Zdroj: | Journal of Vibration and Control. 24:3819-3829 |
ISSN: | 1741-2986 1077-5463 |
Popis: | Harmonic axial force resulting from a propeller’s first vibration mode is a major cause of tonal sound radiation of an underwater vehicle. To reduce the harmonic force, we employ a dynamic antiresonant vibration isolator (DAVI) in parallel with thrust bearing of the shafting system to attenuate vibration transmitted to the hull. The methods of transfer matrices and substructure synthesis are used to create a semi-analytical dynamic model of the propeller–shaft–hull system with DAVI. In this model, the elastic properties of the propeller and foundation are taken into consideration. The force transmissibility and power flow are then used to evaluate the isolation performance of the DAVI. For the purpose of comparison, a resonance changer (RC) proposed in the published literature is also used to reduce the axial vibration transmission. It is demonstrated numerically that by using DAVI, the vibration and power flow of the underwater vehicle are greatly attenuated at the designed frequency without obviously changing the axial fundamental resonance frequency of the shafting system, which is superior to the RC isolator. |
Databáze: | OpenAIRE |
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