Experimental Investigation of Lubrication Film Starvation of Polyalphaolefin Oil at High Speeds
Experimental Investigation of Lubrication Film Starvation of Polyalphaolefin Oil at High Speeds
复制标题
高速聚α烯烃油润滑膜饥饿的实验研究
DOI：
10.1007/s11249-014-0426-9
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发表时间：
2014
影响因子：
3.2
通讯作者：
Luo Jianbin
中科院分区：
文献类型：
--
作者：
Liang He;Guo Dan;Luo Jianbin
本研究研究了高速时缺乏弹性流体动力接触的润滑行为。建造了一个新的球盘测试台，能够在高达 100 m/s 的高速下测量牵引力，并在高达 42 m/s 的速度下测量润滑膜厚度。采用相对光学干涉强度技术测量膜厚。实验结果表明，在缺油条件下，当速度超过临界速度时，油膜厚度迅速且不对称地减小。饥饿是由入口区域和储油器侧面可用的润滑剂量控制的。在高速行驶时，由于离心作用，油层的形状变得不对称，油量随速度逐渐减少，油层外侧的油被甩掉，油层内侧的油被压缩。石油供应和离心力导致的石油损失的平衡决定了饥饿行为。
The lubrication behavior of starved elastohydrodynamic contacts at high speeds was investigated in this study. A new ball-on-disc test rig with the ability to measure traction force at high speeds up to 100 m/s and lubrication film thickness at speeds up to 42 m/s was built. The relative optical interference intensity technique was used to measure the film thickness. The experimental results show that the film thickness decreased rapidly and asymmetrically when the speed exceeded a critical speed under the starved lubrication condition. Starvation is governed by the amount of lubricant available both in the inlet region and on the side of the oil reservoir. The shape of the oil reservoir becomes asymmetric and the amount of oil gradually reduces against the speed at high speeds because of the centrifugal effects, under which the oil on the outer side of the oil reservoir will be thrown away and the oil on the inner side of the oil reservoir will be compressed. The balance of oil supply and oil loss due to centrifugal force determines the starvation behavior.