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http://dx.doi.org/10.5369/JSST.2020.29.3.205

Development of Vibration Compensator for Vertical Vibration Damping of Ships  

Jung, Min Je (Mechanical Engineering, Pusan National University)
Kim, Tae Ok (KOMECO Co, Ltd)
Ahn, Jung Hwan (Mechanical Engineering, Pusan National University)
Kim, Hwa Young (Mechanical Engineering, Pusan National University)
Publication Information
Journal of Sensor Science and Technology / v.29, no.3, 2020 , pp. 205-210 More about this Journal
Abstract
The aim of this study is to develop a vertical vibration compensator that attenuates the vertical vibration of ships. The vibration compensator was designed according to the principle of generating vertical excitation forces by rotating two eccentric bodies of the same mass in opposite directions at the same rotational speed. In addition, the structural stability was analyzed using the finite element method. The maximum stress in the drive shaft was 95.6 MPa, which was approximately 35% of the allowable stress of the shaft material (SM45C, 270 MPa). The acceleration signals of the vibrator compensator body and the testbed were determined to evaluate the efficiency of the vibration compensator and the designed excitation forces. Subsequently, the excitation forces were estimated based on the relationship between force and acceleration. The estimated results were very close to the theoretical values with an error of less than 3%.
Keywords
Vibration compensator(VC); Fan-shaped unbalanced mass; Vertical vibration damping; Acceleration measurement; Excitation force;
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