Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Effects of Mount Eccentricity and External Force Eccentricity on the Vibration Characteristics of Naval Shipboard Equipments Supported by Elastic Mounts

마운트편심과 기진력편심이 함정탑재장비의 진동특성에 미치는 영향

  • Lee, Hyun Yup (Department of Naval Architecture and Ocean Engineering, Chungnam National University) ;
  • Lee, Chung Hyun (Vibration Team, Super Century) ;
  • Ruy, Wonsun (Department of Naval Architecture and Ocean Engineering, Chungnam National University)
  • Received : 2017.07.24
  • Accepted : 2017.10.11
  • Published : 2017.12.20
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Abstract

A rigid body supported by 4 linear springs has been analyzed, to investigate the effects of eccentricities on the vibration responses for naval shipboard equipments supported by elastic mounts. Considering mount eccentricity (the location of the center of spring reaction forces relative to the mass center) and excitation force eccentricity (the location of the center of the excitation force relative to the mass center), the vibration phenomena have been formulated and discussed. Also, the effects of the eccentricities have been evaluated and discussed for the elastically mounted naval shipboard equipment. Results show that the mount eccentricity has little effects on the structure-borne noise above the natural frequency of the system, however the excitation force eccentricity has significant effects all over the frequency range.

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References

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