Abstract：To avoid the resonance of horizontal wheel classifier in the process of operation, transfer matrix method and finite element method based on ANSYS Workbench 16.0 were used to calculate the critical speed of horizontal wheel classifier rotor in experimental machine and industrial prototype. Comparing the calculation and test values, the results show that for the experimental machine, the deviation between transfer matrix calculation and test value is 11.6%, while the deviation between finite element calcultation and test value is 4.1%,for the industrial prototype, the deviation between transfer matrix calculation and test value is 10.5%,while the deviation between finite element calcultation and test value is 3.5%. This comparation results suggest that the finite element method is more accurate, so the calculation of critical speed for horizontal wheel classifier rotor should be given priority to finite element method。

Keywords: horizontal wheel classifier; critical speed; transfer matrix method; finite element method