Bulk modulus of solidified oil at high pressure as predominant factor affecting life of thrust ball bearings
Bulk modulus of solidified oil at high pressure as predominant factor affecting life of thrust ball bearings
复制标题
高压固化油的体积模量是影响推力球轴承寿命的主要因素
DOI：
10.1080/10402009508983406
复制
发表时间：
1995
影响因子：
2.1
通讯作者：
F. Hirano
中科院分区：
文献类型：
--
作者：
N. Ohno;N. Kuwano;F. Hirano
在以前的论文中，指出矿物油在超过玻璃化转变点的高压下的固化行为对轴承寿命起着重要作用。根据对牵引油和矿物油凝固现象的实际观察，进行了进一步的详细研究。牵引油的特点是压力-粘度系数大和摩擦力高，因此轴承寿命较短，尽管它们具有优异的分离膜形成能力，特别是在固化条件下。矿物油的一般趋势表明，轴承寿命随油膜参数的增加而增加。然而，牵引油高膜参数的有益效果被认为受到高摩擦力的干扰，发现高摩擦力与固化油的体积弹性模量呈线性增加。鉴于这一事实，固化油的脆性是由粘弹性固体转变到裂纹萌生的温度差来估计的，在此基础上，提出了一种新的计算方法。
In a previous paper, it was pointed out that the solidification behavior of mineral oils at high pressures exceeding glass transition points plays an important role on bearing life. Further detailed investigations have been carried out based upon actual observations of solidification phenomena of traction oils and mineral oils. Traction oils characterized by large pressure-viscosity coefficients and high friction result in shorter bearing life, in spite of their excellent separating film formation ability, in particular, under solidified conditions. The general tendency of mineral oils shows that bearing life increases with the film parameter. However, the beneficial effect of high film parameters of traction oils is considered to be disturbed by high friction, which is found to increase linearly with the bulk modulus of solidified oil. In view of this fact that brittleness of solidified oils is estimated by the temperature difference from the viscoelastic solid transition to the initiation of cracks unde...