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首页> 外文会议>International Symposium on Stability Control of Rotating Machinery(ISCORMA-4); 20070827-31; Calgary(CA) >A ROTORDYNAMIC MODEL FOR USE IN HIGH-SPEED GAS BEARING TESTING
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A ROTORDYNAMIC MODEL FOR USE IN HIGH-SPEED GAS BEARING TESTING

机译：用于高速气体轴承测试的转子动力学模型

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摘要

Bently Pressurized Bearing Company has recently built a high-speed, vertical test stand that is designed to reach speeds of up to 100,000 rpm with a shaft diameter of 44.7 mm (1.76 in). The rotor is supported by two externally pressurized, radial gas bearings and one externally pressurized gas thrust bearing. This test stand is being used to validate gas bearing design models and to refine the design of high-speed gas bearings when operating at supply pressures of several hundreds of psi. As part of the test stand development process, a rigid-body rotordynamic model has been developed to enable determination of the stiffness and damping of the bearings under test. This paper presents the rotordynamic model and shows how the model is used with synchronous perturbation to calculate the stiffness and damping of each bearing independently.
机译：Bently增压轴承公司最近建立了一个高速，垂直的试验台，其轴直径为44.7毫米（1.76英寸），最高速度可达100,000 rpm。转子由两个外部加压的径向气体轴承和一个外部加压的气体推力轴承支撑。当在几百psi的供应压力下运行时，该试验台用于验证气体轴承设计模型并改进高速气体轴承的设计。作为试验台开发过程的一部分，已经开发了刚体转子动力学模型，以能够确定被测轴承的刚度和阻尼。本文介绍了转子动力学模型，并展示了该模型如何与同步扰动一起用于独立计算每个轴承的刚度和阻尼。

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