| 新型狭缝节流球形静压气体陀螺轴承的动态特性 |
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| 引用本文： | 姚英学,崔大朋,秦冬黎.新型狭缝节流球形静压气体陀螺轴承的动态特性[J].宇航学报,2010,31(8). |
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| 作者姓名： | 姚英学 崔大朋 秦冬黎 |
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| 作者单位： | 哈尔滨工业大学机电学院,哈尔滨,150001 |
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| 摘 要： | 针对新型结构气浮陀螺,对其中的狭缝节流球形静压气体轴承,采用小扰动法进行动态特性分析,通过相容性条件将狭缝气膜与球形支撑气膜统一,建立动态Reynolds方程的伽辽金余量弱解公式,有限元求解有关弱解公式的耦合非线性方程组,得到动态特性系数,进行仿真并分析了该结构球形静压气体轴承的动态特性系数随扰动频率v(挤压数σ),转子转速ω(压缩数Λ)以及偏心率Eh的变化规律,从而在理论上确定了该结构气体轴承动态特性系数的影响因素及变化规律。
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| 关 键 词： | 气体轴承 动态特性系数 小扰动法 相容性条件 伽辽金余量法 弱解 |
Dynamic Characteristics of A New Externally Pressurized Spherical Gas Gyro-Bearing with Slot Restrictor |
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| YAO Ying-xue,CUI Da-peng,QIN Dong-li.Dynamic Characteristics of A New Externally Pressurized Spherical Gas Gyro-Bearing with Slot Restrictor[J].Journal of Astronautics,2010,31(8). |
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| Authors: | YAO Ying-xue CUI Da-peng QIN Dong-li |
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| Institution: | YAO Ying-xue,CUI Da-peng,QIN Dong-li(School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China) |
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| Abstract: | Based on a new type gas gyroscope,a small perturbation method is employed to analyze the dynamic characteristics of the externally pressurized spherical gas bearing with slot restrictors.The slot gas film and the spherical gas film are united by means of a compatibility condition,and a weak solution formula,based on Galerkin residual method is built,then the nonlinear coupled weak solution equation is solved with FEM and dynamic coefficients are obtained.Numerical simulation is operated and the varying law ... |
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| Keywords: | Gas bearing Dynamic coefficients Perturbation method Compatibility condition Galerkin residual method Weak solution |
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