多孔质径向气体静压轴承运动稳定性分析  

Analysis on Operation Stability of Porous Aerostatic Journal Bearing

作　　者：阮宏慧[1] 张大卫[1] 景秀并[1] 

机构地区：[1]天津大学机械工程学院,天津300072

出　　处：《轴承》2006年第9期1-3,共3页Bearing

摘　　要：多孔质轴承在高速运转条件下会出现涡动失稳现象,使轴承的动态稳定性下降。利用线性扰动法对多孔质静压轴承中气体润滑的连续方程求解,得到动态下轴承稳定的临界质量———系统保持稳定的最小质量,并以此为稳定性判据得出轴承参数对稳定性的影响,即轴承的供气压力、渗透数、长径比越大,稳定区域越小,为今后的多孔质轴承设计提供了参数的优化范围。The equation of continuity of flow lubrication is solved in porous aerostatic journal bearing under the dynamic stability condition with the linear iterative method, and the threshold mass considered as stability criterion, that is the minimum mass with which the system keep stable, is found. It is observed that the bigger the supply pressure, the penetrative number and the L/D ratio are, the lower the stability is. The parameter range used to optimize design is offered for porous beatings.

关 键 词：气体轴承 多孔质材料 稳定性 临界质量 供气压力 渗透数 

分 类 号：H133.35[语言文字—汉语] O242.23[理学—计算数学]