论周向供油槽对阻尼轴承-转子系统不平衡响应的影响

Analytical Study on the Effect of a Circumferential Feeding Groove on the Unbalance Response of a Rigid Rotor in Squeeze Film Damper

依据新近发展的包含供油槽动压作用和流体惯性作用的油膜作用力数学模型〔4〕,研究了阻尼轴承供油槽对转子系统不平衡响应的影响。与已发表的研究结果相比较 ,供油槽增加了转子进动的轨道半径 ,而且影响转子系统的不平衡响应 。

Of recent years,a series of researches have shown that a circumferential feeding groove of squeeze film damper (SFD) has evident effect on forces of fluid film in SFD.Therefore,the feeding groove also affects dynamic responses of a rotor in SFD.Present work studies the effect of the feeding groove on the unbalance response of a rigid rotor in squeeze film damper based on the film force models that include effects of the feeding groove and fluid inertia on dynamic characteristics of the fluid film in SFD.Comparisons with the published work shows that the feeding groove increases orbit radius of rotor whirling and affects unbalance response of a rotor system.And the effect of the feeding groove on the unbalance response is related to the action of fluid inertia.