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Affiliation of Author(s):机电学院

Journal:Zhejiang Daxue Xuebao (Gongxue Ban)

Abstract:An accurate finite element (FE) dynamic model of decanter centrifuge with double-rotor was established based on dynamic test and model updating. The first three modal parameters of the centrifuge and screw conveyor under different support conditions were acquired through dynamic test on complex double-rotor assembly. The three-dimensional FE model was built accurately and the structural connection stiffness was parameterized. The effectiveness of established FE model was verified through the modal analysis and the comparison of each modal parameter between test and FE analysis. The influence of each connecting structure of the decanter centrifuge on structural modal parameters was obtained through sensitivity analysis and the key connecting structures of screw conveyor and assembled decanter centrifuge were model updated by genetic algorithm. The error of the first three bending modal frequencies between the updated model supported by bearings and test results was reduced to less than 5%. The updated model can be used to simulate the dynamic behaviour of decanter centrifuge and make a good basis for further dynamic analysis. © 2019, Zhejiang University Press. All right reserved.

ISSN No.:1008-973X

Translation or Not:no

Date of Publication:2019-02-01

Co-author:Gao, Tian-Yu,Chen, Yi,yinchen,Xi, Hong-Hao

Correspondence Author:周瑾