CAJ | 학술논문

采用多重网格法对几种常见载液的磁流体润滑滑动轴承进行了等温弹流润滑分析。在等温弹流润滑中，在保证其他条件不变的前提下，粘度是影响弹流润滑性能的主要因素。数值分析结果表明，随着粘度的增大接触区润滑膜的厚度逐渐变大，并且只有在一定的范围内，油膜才会呈现出明显的劲缩现象，这也是弹流润滑的最主要特征。超出一定范围之后，随着粘度的继续增大，油膜的劲缩现象减弱，直至消失。磁流体粘度对润滑膜膜厚的影响程度要明显大于对压力的影响程度，在润滑膜的入口区随着粘度的增大压力增大，压力峰则随着粘度的增大而减小，润滑膜的膜厚和最小膜厚则是随着粘度的增加不断增加。
채용다중망격법대궤충상견재액적자류체윤활활동축승진행료등온탄류윤활분석。재등온탄류윤활중，재보증기타조건불변적전제하，점도시영향탄류윤활성능적주요인소。수치분석결과표명，수착점도적증대접촉구윤활막적후도축점변대，병차지유재일정적범위내，유막재회정현출명현적경축현상，저야시탄류윤활적최주요특정。초출일정범위지후，수착점도적계속증대，유막적경축현상감약，직지소실。자류체점도대윤활막막후적영향정도요명현대우대압력적영향정도，재윤활막적입구구수착점도적증대압력증대，압력봉칙수착점도적증대이감소，윤활막적막후화최소막후칙시수착점도적증가불단증가。
The isothermal elstohydyodynamic lubrication(EHL) of ferrofluid bearing with different carriers was carried out by multi-grid method. If the other conditions remain unchanged, viscosity is the main influence factor in isothermal EHL. The results show that the film thickness on contact surface increase with increasing viscosity, and in a certain range, film shrink appears, which is the most obvious character of EHL. Beyond the certain range, the viscosity increase continuely, the phenomenon of film shrinking becomes less obvious and until it disappears. The influence of viscosity on film thickness is greater than on pressure. The pressure in the film entrance increase and the pressure peak decreases with increasing viscosity. The film thickness and the minimum film thickness increase with increasing viscosity.