Vibration Analysis of Hull Structure of a Fully Rotary Rescue Tugboat
Aiming at the vibration problem of hull structure of fully rotary rescue tugboat at the maximum propeller speed,it was determined that the excitation source of hull structure vibration was from stern propeller,and propeller excitation caused the forced vibration and resonance of hull structure.After the vibration control was carried out by strengthening the stern structure and laying damping and damping materials,the actual ship test showed that the vibration velocity of the hull structure was re-duced by a maximum of 7.23 mm/s.
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