Steady-state and transient analysis of a squeeze film damper bearing for rotor stability
Steady-state and transient analysis of a squeeze film damper bearing for rotor stability
复制标题
用于转子稳定性的挤压油膜阻尼轴承的稳态和瞬态分析
DOI：
--
复制
发表时间：
1975
期刊：
影响因子：
--
通讯作者：
E. J. Gunter
中科院分区：
文献类型：
--
作者：
L. Barrett;E. J. Gunter
研究了挤压油膜阻尼器轴承的稳态和瞬态响应。推导了动压轴承力的稳态和瞬态方程。轴承等效刚度和阻尼系数由稳态方程确定。这些系数用于找到轴承配置，这将提供基于转子轴承系统的稳定性分析的最佳支撑特性。通过耦合轴承和轴颈方程并在时间上向前积分，对转子-轴承系统进行瞬态分析。分析中包括了不平衡、气穴和固定弹簧的影响。本文讨论了在气动力和轴内摩擦力影响下转子-轴承系统稳定性的确定方法，着重讨论了系统特征频率方程的求解和稳定性图的绘制。结果表明，为了获得最佳的稳定性和低力传递能力，挤压轴承应在偏心率为0.4时运行。
A study of the steady-state and transient response of the squeeze film damper bearing is presented. Both the steady-state and transient equations for the hydrodynamic bearing forces are derived. The bearing equivalent stiffness and damping coefficients are determined by steady-state equations. These coefficients are used to find the bearing configuration which will provide the optimum support characteristics based on a stability analysis of the rotor-bearing system. The transient analysis of rotor-bearing systems is performed by coupling the bearing and journal equations and integrating forward in time. The effects of unbalance, cavitation, and retainer springs are included in the analysis. Methods of determining the stability of a rotor-bearing system under the influence of aerodynamic forces and internal shaft friction are discussed with emphasis on solving the system characteristic frequency equation and on producing stability maps. It is shown that for optimum stability and low force transmissability the squeeze bearing should operate at an eccentricity ratio epsilon 0.4.