箔片轴承气弹耦合求解方法  

A Method for Solving Elasto-Aerodymacic Coupling Problem in Foil Bearing

作　　者：徐刚[1] 郑越青[1,2] 王文升[1] 徐庆元[1] 

机构地区：[1]中国工程物理研究院机械制造工艺研究所,四川绵阳621900 [2]西安交通大学能源与动力工程学院,陕西西安710049

出　　处：《机械设计与制造》2014年第7期205-207,共3页Machinery Design & Manufacture

基　　金：中国工程物理研究院重点发展基金(2011A0203011);四川省战略新兴产品计划项目(2011GZX0098)

摘　　要：气弹耦合求解是计算箔片动压气体轴承承载性能的有效方法。提出一种简单的箔片动压气体轴承气弹耦合求解方法。该方法以简单弹性基础模型为基础,将气膜厚度控制方程代入Reynolds是方程,获得箔片动压气体轴承气弹耦合控制方程,运用有限差分法结合Newton-Raphson迭代法对气弹耦合控制方程进行求解。计算方法获得的轴承内部压力分布与文献结果吻合很好。该方法的优势在于,省略了除最底层的牛顿迭代之外的其他所有迭代过程,使迭代次数大大减少,从而使计算效率获得提高。The elasto-aerodynomically coupling solution is an effective method for the load performance prediction of gas foil bearings, From the simple elastic foundation model, a simple method for solving elasto-aerodymacic coupling problem in gas foil bearing was presented. The governing equation for elasto-aerodymacic coupling was obtained through substituting the governing equation forfilm thickness into the Reynolds equation. The governing equation for elasto-aerodymacic was then solved numerically by means of the finite difference method combining with Newton-Raphson method. The results of pressure distribution in the gas foil bearing were in good agreement with reference results. This approach had the advantage of eliminating all other iterations excepting Newton-Roohson iteration, resulting in a significant reduction in computational costs.

关 键 词：箔片轴承 气弹耦合 Newton-Raphson迭代法 

分 类 号：TH16[机械工程—机械制造及自动化]