文章摘要
李树森,王成成.带轴向微通槽静压气体轴承承载特性研究[J].润滑与密封,2018,43(1):55-60
带轴向微通槽静压气体轴承承载特性研究
Research on Load Capacity of Hydrostatic Gas Bearing with Axial Micro channel Grooves
  
DOI:10.3969/j.issn.0254-0150.2018.01.012
中文关键词: 径向静压气体轴承  微通槽  承载力  刚度
英文关键词: radial hydrostatic gas bearing  micro channel groove  load capacity  stiffness
基金项目:哈尔滨市科技创新人才研究专项资金项目(优秀学科带头人)(2016RAXXJ029);教育部博士点基金项目(20120062110006).
作者单位E-mail
李树森 东北林业大学机电工程学院 wangchengcheng0206@126.com 
王成成   
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中文摘要:
      以开设轴向微通槽的径向静压气体轴承为研究对象,通过Fluent软件对轴承的承载力和刚度进行仿真分析;针对矩形、三角形和椭圆形3种截面微通槽,分析气膜厚度对轴承的承载力和刚度的影响,得出微通槽的最佳截面形状设置;针对最佳截面形状的微通槽,分析不同槽宽和槽深对承载力的影响。研究发现:轴向微通槽可以明显提高径向静压气体轴承的承载力和刚度,偏心率越大,提升效果越明显;气膜厚度较小时,矩形微通槽气体轴承的承载能力和刚度最佳,且气膜厚度越小,微通槽形状的影响越大;气膜厚度较大时,3种微通槽轴承的承载力及刚度相近;承载力随微通槽槽宽和槽深的增大而先升高后趋于稳定。
英文摘要:
      Taking the radial hydrostatic gas bearings with axial micro channel grooves as the research object,the load capacity and stiffness of the bearings were simulated and analyzed by Fluent software.According to the three different section shapes of the micro channel grooves,including rectangular equalizing groove,triangular equalizing groove and oval equalizing groove,the influence of different gas film clearance on load capacity and stiffness of the bearings was analyzed,and the optimum section shape setting of the micro channel groove was obtained.Aimed at the gas bearings with the rectangular equalizing groove,the influence of different width and depth of grooves on load capacity was analyzed.It is found that the load capacity and stiffness of the radial hydrostatic gas bearing can be improved by opening axial micro channel grooves,and the improving effect on load capacity is more obvious when the eccentricity is larger.When the gas film clearance is small,the rectangular equalizing groove has the maximum load capacity and stiffness,and the smaller the gas film clearance is,the greater the influence of the micro channel groove’s shape on load capacity and stiffness.When the gas film clearance is large,three types of grooves have the similar load capacity and stiffness.With the increasing of groove width and groove depth,the load capacity of the bearings are firstly increased and then tends to be stable.
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