摘要
对新开发的弹性箔片动压气体止推轴承进行了理论分析，采用等温气体模型，导出求解该轴承静态特性的弹性流体动力润滑方程，利用有限元方法对方程进行求解，得到了该轴承在流固耦合下的压力分布和间隙分布，以及结构参数对轴承性能的影响．数值计算结果表明：节距比和瓦块张角存在最佳取值，节距比取0．5，瓦块张角为70°～90°时，可得到理论上的最大无量纲承载力；弹性模量越大，无量纲承载力随着间隙比和轴承数的增加而增大的趋势就越明显；选择合适的结构和材料，可以得到较高的承载力，这将进一步扩大该轴承的应用范围．
A new type of compliant foil bearing （CFB） -aerodynamic foil thrust bearing with elastic support was developed and analyzed. Based on the isothermal gas model, the elastohydrodynamic lubrication （EHDL） equations were established and solved with finite element method （FEM）. The highest dimensionless load was obtained when pitch ratio as 0. 5 and tile angular ranged 70°-90°. The calculated results show that the dimensionless load increases with increasing of gap ratio and bearing number, and dimensionless load increases more rapidly when the elastic ratio grows, and the preferable bearing capacity can be enhanced to expand the bearing application with suitable structures and materials.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2006年第9期1032-1035,共4页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目(50206015)
关键词
气体止推轴承
静态特性
承载力
foil bearing
gas lubrication
static characteristics
bearing capacity
