Parametric Modeling of UUV Engine body based on Substructure Receptance Method

HAN Fei, WANG Min-qing

Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (23) : 185-190.

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PDF(1959 KB)
Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (23) : 185-190.

Parametric Modeling of UUV Engine body based on Substructure Receptance Method

  • HAN Fei, WANG Min-qing
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Abstract

To achieve an parametric model of UUV engine body, considering modal analysis result and external excitation characteristic, the equivalent model of each substructure was established and their line receptances were calculated based on energy conservation and the definition of mobility power flow. According to boundary conditions, the coupling vibration equation was established, and finally a parametric model of engine body was obtained. The input receptances of engine body at different position were calculated. The model was validated by mechanical receptance experiment. With external excitation as input parameter, the influences of some major parameters vibration were analyzed. Results show that at 400Hz~1.8kHz, the axial force which is applied on cylinder block and the roller force make major contribution to the vibration response of cabin shell, vibration characteristic of different direction needs to be considered in the research of engine modeling; increasing the thickness of swashplate box can significantly reduce the vibration response of cabin shell.

Key words

vibration transmission / substructure / mechanical receptance / parametric modeling

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HAN Fei, WANG Min-qing . Parametric Modeling of UUV Engine body based on Substructure Receptance Method[J]. Journal of Vibration and Shock, 2016, 35(23): 185-190

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