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Vibration Reduction Performance of Damping-Enhanced water-lubricated bearing Using Fluid-Saturated Perforated Slabs

Chinese Journal of Mechanical Engineering 2020年第6期33卷 218-227页

作者： Yong Jin Jianjun Lu Wu Ouyang Zhenglin Liu Kunsheng Lao Ministry of Education Key Laboratory of High Performance Ship Technology(Wuhan University of Technology)Wuhan430063China School of Energy and Power Engineering Wuhan University of TechnologyWuhan430063China

As the first link element for the transmission of shaft vibration to the pedestal and even to the hull,water-lubricated bearing plays a key role in suppressing *** the porous structure is considered as one of the main methods for improving the wideband vibration and noise reduction performance of materials in many industrial fields,the studies in the field of water-lubricated bearing remain *** enhance vibration reduction performance,a fluid-saturated perforated slab is designed in this study,and via the establishment of a fluid-solid coupled vibration model,the influence law and impact levels were analyzed and verified by simulation and *** results obtained verified that the total vibration amplitude of damping-enhanced stern bearing in the vertical direction was smaller than that of the normal stern bearing,and the reduction amplitude of the characteristic frequency agreed with the optimal value at approximately 0.1 of the volume fraction of the liquid phase when the solid-fluid phase was rubber–***,the increase in fluid fraction did not enhance the damping effect,instead,it unexpectedly reduced the natural frequency of the raw material *** research indicates that the design of the fluid-saturated perforated slab is effective in reducing the transmission of the vibration amplitude from the shaft,and presents the best volume fraction of the liquid phase.

关键词： water-lubricated stern bearing Fluid-saturated perforated slabs Fluid-salid coupled vibration model

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