Nonlinear resonances and self-excited oscillations of a rotor due to impact in radial clearance of bearings (entrainment and combination oscillation at 1/2 order subharmonic resonance)

被引：0

作者：

Inagaki, Mizuho ^{[1
]}

Ishida, Yukio ^{[1
]}

Hayakawa, Makoto ^{[1
]}

Yasuda, Satoshi ^{[1
]}

机构：

[1] 13th Research Domain, TOYOTA Central R and D Labs., Inc., Nagakute

来源：

Nippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C | 2003年 / 69卷 / 08期

关键词：

Combination; Entrainment; Impact; Nonlinear resonance; Radial clearance; Rotor; Self-excited oscillation; Subharmonics; Van der Pol's equation;

D O I：

10.1299/kikaic.69.1960

中图分类号：

学科分类号：

摘要：

Oscillations around 1/2 order subharmonic resonance are investigated in a rotor system with a radial clearance between the bearing and the casing by numerical simulations and experiments. The following phenomena due to impact in the bearing are found: (1) Combination oscillations of [pf - pb = ω] and [3pf-pb=2ω] occur in lower speed range of +(1/2)ω resonance. (2) Entrainment phenomena occur in the speed range of +(1/2)ω resonance. (3) Oscillations of ω-pf occur around the speed range of +(1/2)ω resonance with self-excited oscillation of pf. Furthermore entrainment phenomena and coupling between self-excited oscillation of pf and oscillation of ω-pf are explained theoretically by a similar self-excited and forced oscillation model of nonlinear van der Pol's equation.

引用

页码：1960 / 1967

页数：7