CAJ | 학술논문

运用平均流量雷诺方程建立圆坑织构表面微流体动压模型，数值分析无限大摩擦接触面织构参数对流体动压润滑影响，并提出优化方法。研究结果表明：存在最优织构面积比区间（5％～15％）使平均油膜压力最大，存在最优深度4μm使平均油膜压力最大，并且最优深度与润滑膜膜厚成正比。引入新的参数：深度膜厚比。当深度膜厚比为1.4时，平均油膜压力达到最大。在实际应用中，根据摩擦系统具体工况，由Stribeck曲线估算系统膜厚，然后根据膜厚求出最优坑深。在不考虑边界限制和其他限制条件前提下，随着直径的增大，织构化表面平均油膜压力线性增加，所以较大接触面宜选用较大直径织构。
운용평균류량뢰낙방정건립원갱직구표면미류체동압모형，수치분석무한대마찰접촉면직구삼수대류체동압윤활영향，병제출우화방법。연구결과표명：존재최우직구면적비구간（5％～15％）사평균유막압력최대，존재최우심도4μm사평균유막압력최대，병차최우심도여윤활막막후성정비。인입신적삼수：심도막후비。당심도막후비위1.4시，평균유막압력체도최대。재실제응용중，근거마찰계통구체공황，유Stribeck곡선고산계통막후，연후근거막후구출최우갱심。재불고필변계한제화기타한제조건전제하，수착직경적증대，직구화표면평균유막압력선성증가，소이교대접촉면의선용교대직경직구。
Based on the average flow model Reynolds equation,the tribology performances of circular micro-pit textured surface with different geometry parameters in infinite contact area were numerically analyzed,and the optimization method was proposed.The results show that:there exists an optimal range of the texture area ratio,5 %~15 %,which maximizes the average film pressure.There also exists an optimal depth of 4 μm,which maximizes the average film pressure,and the optimal depth is proportional to the film thickness.A new parameter,the depth-film thickness ratio,was proposed.It is demonstrated that when the depth-film thickness ratio equals 1.4,the system reaches its optimal state.In practice,the film thickness of the system can be evaluated according to the famous Stribeck curve and the specific running condition.There-fore,optimal texture depth can be obtained from the film thickness.Average film pressure is increased linearly with the in-crease of the texturediameter when not considering the confine of the boundary and other factors.Therefore,textures with large diameter should be chosen in larger contact area.