基于ANSYS的多孔质静压轴承径向特性数值模拟  

Numerical Simulation on Radial Characteristics of Porous Aerostatic Bearing Based on ANSYS

作　　者：崔海龙[1] 岳晓斌[1] 张连新[1] 雷大江[1] 夏欢[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

出　　处：《组合机床与自动化加工技术》2014年第11期43-45,共3页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家"高档数控机床与基础制造装备"科技重大专项:"强激光光学元件超精密制造装备研制"课题资助(2013ZX04006011)

摘　　要：文章提出了一种基于ANSYS Workbench 14.5平台的多孔质静压轴承径向特性数值模拟方法。首先采用FLUENT模块完成多孔介质和气膜间隙区域的流场分析,得到流体域的压力分布;然后利用Static Structure模块将流体域的计算结果耦合到主轴转子上进行静力分析,得到主轴转子的应变,并且对主轴转子的强度进行了校核;接着对主轴转子表面分布的应力进行积分,得到多孔质静压轴承的承载力,进而通过逐差法得到径向刚度;最后确定了多孔质静压轴承在不同承载条件下获得最佳刚度的气膜间隙范围。A new method to simulate radial characteristics of porous aerostatic bearing was proposed in this paper based on the platform ANSYS Workbench 14. 5. First, pressure distribution of gas gap and porous re-gion was calculated by using the FLUENT module. Then, the deformation of spindle was achieved by the method of fluid-structure interaction, strength check was processed by using the Static Structure analysis module, the capacity of aerostatic bearing was also achieved. The stress distribution of spindle was integrat-ed to obtain the capacity of the porous aerostatic bearing, and the radial stiffness was achieved by method of successive minus. Finally, the range of gas gap of porous aerostatic bearing was confirmed,which could be used to achieved optimal stiffness.

关 键 词：多孔质静压轴承 径向特性 ANSYS WORKBENCH 

分 类 号：TH117.2[机械工程—机械设计及理论] TG506[金属学及工艺—金属切削加工及机床]