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高速轻载机械常使用多油楔轴承,通过对三油楔浮环轴承和油楔个数是其两倍的六油楔浮环轴承动压油膜流体动力特性的计算和比较,判断出多油楔浮环轴承油楔个数及浮环对轴承性能的影响。多油楔浮环轴承不但边界复杂而且是多域问题,由于边界元方法不需要域内网格划分,只需边界离散,因而在处理复杂边界问题、多域问题时有其独特的优越性,计算工作量小,精度高。利用边界元方法计算了三油楔、六油楔两类浮环轴承的外油膜流场分布、轴承及浮环表面压力分布、e=0.03时轴承表面压力分布直观图、有无浮环时内摩擦损耗,并且对两类轴承的稳定性、承载能力及内摩擦损耗作了比较。通过对计算结果的分析和比较判断出在相同的偏心率下油楔个数的增加可以提高轴承的稳定性和承载力,加入浮环后可以减小轴承的内摩擦损耗。
High-speed light-duty machinery often use multi-wedge bearings, through the three oil wedge floating ring bearings and the number of wedges is double the six-wedge floating ring bearing dynamic pressure fluid film fluid dynamics calculations and compared to determine the oil Influence of the number of wedge on the wedge floating ring bearing and the performance of the floating ring on the bearing. The multi-wedge floating ring bearing not only has complicated boundary but also multi-domain problem. Since the boundary element method does not need intra-domain meshing and only requires the boundary to be discrete, it has unique advantages in dealing with complex boundary and multi-domain problems. Small workload, high precision. Boundary element method is used to calculate the oil film flow field, the pressure distribution on the bearing and the surface of the floating ring of the three types of oil-wedges and the six oil wedges, the pressure distribution on the surface of the bearing is e = 0.03, Friction loss, and the stability of the two types of bearings, bearing capacity and internal friction loss were compared. Through the analysis and comparison of the calculated results, the increase of the number of oil wedges at the same eccentricity can improve the stability and bearing capacity of the bearing, and the inner friction loss of the bearing can be reduced when the floating ring is added.