CAJ | 학술논문

采用CFD软件Ansys flotran对不同结构参数的微孔阵列式空气静压径向轴承进行全参数三维实体建模，分析微孔阵列式节流器的微孔个数、节流器微孔直径、平均半径间隙以及节流器轴向位置对空气静压径向轴承静态特性的影响。结果表明：在一定范围内，增加节流器微孔个数能显著提高轴承承载力和刚度；当平均半径间隙一定时，减小节流微孔直径可以提高轴承承载力和刚度；存在最佳的平均半径间隙使得轴承的承载力最大，轴承刚度则随平均半径间隙的减小而增大；存在最佳的节流器轴向位置使得轴承承载力和刚度最大。利用上述结论可实现微孔阵列式径向轴承的结构参数优化。
채용CFD연건Ansys flotran대불동결구삼수적미공진렬식공기정압경향축승진행전삼수삼유실체건모，분석미공진렬식절류기적미공개수、절류기미공직경、평균반경간극이급절류기축향위치대공기정압경향축승정태특성적영향。결과표명：재일정범위내，증가절류기미공개수능현저제고축승승재력화강도；당평균반경간극일정시，감소절류미공직경가이제고축승승재력화강도；존재최가적평균반경간극사득축승적승재력최대，축승강도칙수평균반경간극적감소이증대；존재최가적절류기축향위치사득축승승재력화강도최대。이용상술결론가실현미공진렬식경향축승적결구삼수우화。
With the help of the CFD software Ansys flotran,the three?dimensional model of micro orifice array aerostatic radical bearings with different structure was set up.The effects on the static characteristics of aerostatic radial bearings were studied by the number and diameter of the micro orifice,the average radius clearance,and the axial location of restrictor. The results show that the bearing capacity and stiffness of the bearings are significantly increased with the increasing of the number of micro orifice within a certain range.At given average radius clearance,the bearing capacity and stiffness can be increased by reducing the diameter of micro orifice.There exits the best average radius clearance to make the bearing ca?pacity the largest,while the stiffness of the bearing is decreased along with the increasing of the average radius clearance. There exits the best axial position of restrictor to make the bearing capacity and stiffness of the bearing the largest.The sim?ulation results can serve to implement the structure optimization of aerostatic radial bearing.