Vibration reduction optimization design of power plant installation base based on particle damping

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (3) : 40-47.

YE Linchang1, XIAO Wangqiang2, SHEN Jianping1, LU Dajun2, LIN Changming2

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Abstract

Taking the installation base of a power plant as the study object, the vibration reduction characteristics of particle damping were explored theoretically. The simulation tools, such as, finite element method (FEM) and discrete element method (DEM) were used to determine the preliminary design scheme of particle damping. Its arrangement location was optimized with vibration characteristics analysis and vibration energy analysis. Particle parameters including particle material, particle diameter, filling rate, surface friction coefficient and surface recovery coefficient, etc. were optimized to determine the final design scheme of particle damping. A model verification test platform was designed for simulation calculation. The simulation results were verified with vibration reduction characteristics tests from the point of view of particle material, particle diameter, filling rate and installation position, etc. Results showed that particle damping has obvious damping effect, and the expected effect of its optimized design scheme is verified effectively; this method provides a new control means for vibration reduction of power plant installation base, and makes contributions to the further improvement of ship stealth.

Key words

power plant / base / particle damping / vibration reduction / optimization design

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YE Linchang1, XIAO Wangqiang2, SHEN Jianping1, LU Dajun2, LIN Changming2. Vibration reduction optimization design of power plant installation base based on particle damping[J]. Journal of Vibration and Shock, 2021, 40(3): 40-47

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