Design model for bending vibrations of single-stage tunnel fan rotor

Geodynamics and Stress State of the Earth's Interior 2017

Krasyuk, A.M.^1,2 ; Kosykh, P.V.^1

Chinakal Institute of Mining, Siberian Branch Russian Academy of Science, Novosibirsk, Russia^1

Novosibirsk State Technical University, Novosibirsk, Russia^2

关键词: Additional mass;    Bending vibrations;    Calculation accuracy;    Design modeling;    Early design stages;    Mass modeling;    Rotor design;    Uniform diameter;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/134/1/012034/pdf
DOI  :  10.1088/1755-1315/134/1/012034

来源: IOP

【 摘 要 】

Using of one-mass model of tunnel fan rotor is justified for estimation calculation of the natural bending vibrations frequency during the design stage. It's shown that the evaluative computation of the main axial tunnel fan at the early design stage yields the acceptable accuracy. It is shown that after completion of the design, the mass of the stepped-type shaft differs from the mass of the calculated uniform-diameter shaft no more than by 40%. Inclusion of this additional mass in the estimation calculation makes it possible to improve the calculation accuracy. The region of the dimensionless rotor design parameters at which the relative difference of frequency in the evaluative and verification calculations is not higher than 5 % is determined.