Dynamics Characteristics of the Rotational Plate Structure with Particle Dampers
Xia Zhaowang1，Wen huabing1，Liu Xiandong2
1 College of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China；2 Department of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
A numerical model has been developed which allows the vibration of rotational plate with particle dampers to be evaluated numerically. The model is based on the combination FEM with DEM. The simulation results indicate that the coupling simulation algorithm is remarkably effective over a wide frequency range. The results also indicate the damping performance of the rotating plate with particle damper has a strong relation with its rotating velocity.A higher rotating velocity results in the increase of the r.m.s. of the plate vibration response at the first and the second mode, that is, the decrease of the damping of the rotating plate. And at the third mode, the displacement of the rotating plate first goes down to its minimum level as the rotating velocity reaches then goes up gradually until the rotating velocity of about 1000 rpm, afterward keeps at a stable level.
2014, Vol. 33 
