GB/T 18325.1-2001 in English

《GB/T 18325.1-2001滑动轴承 流体动压润滑条件下试验机内和实际应用的滑动轴承疲劳强度》由TC236（全国滑动轴承标准化技术委员会）归口，主管部门为中国机械工业联合会。
本标准叙述了通过计算产生疲劳的滑动轴承合金层的应力来改进试验结果可比性的方法。在实际应用中也需要一个同样的计算，因为应力是流体动力油膜产生的压力造成的，所以一定要完整的阐明运行和润滑的条件，除了动载荷、尺寸和运行特征之外，还要对疲劳系统做出如下详尽的规定：a）在动载条件下，随着时间和位置而变化的轴瓦最小油膜厚度在磨合时，应确保不能由于混合润滑在局部产生过热或剪切；b）在动载条件下，随着时间在圆周方向上和轴线方向上的压力分布；c）在轴瓦合金层产生的随着时间和位置而变化的应力，特别是最大交变应力。此外，滑动轴承疲劳强度可能受混合润滑、磨损、污物、摩擦化学反应和其他使用中产生的影响，从而将疲劳问题复杂化了。因此，本标准将疲劳强度严格限制在完全由液体动压将轴瓦表面用润滑剂油膜隔开的条件下。本标准适用于在完全液体动压润滑条件下运行的在试验台和应用中的油润滑圆柱滑动轴承，它包括在双金属和多层金属滑动轴承上的动态加载。

Scope

This standard describes a method for improving the comparability of test results by calculating the stresses in alloy layers of plain bearings that cause fatigue [see Appendix A (standard appendix)]. The same calculation is also required in practical applications, because the stress is caused by the pressure generated by the hydrodynamic oil film, so it is necessary to fully clarify the operating and lubrication conditions, in addition to dynamic loads, dimensions and operating characteristics, but also for fatigue The system makes the following detailed regulations: a) Under dynamic load conditions, the minimum oil film thickness of the bearing bush that changes with time and position should ensure that no local overheating or shearing due to mixed lubrication can occur during running-in; b) Under dynamic load Under the conditions, the pressure distribution in the circumferential direction and the axial direction with time; c) The stress that changes with time and position in the bearing alloy layer, especially the maximum alternating stress. In addition, the fatigue strength of plain bearings may be affected by mixed lubrication, wear, dirt, tribochemical reactions, and other in-use effects that complicate the fatigue problem. Therefore, this standard strictly limits the fatigue strength to the condition that the surface of the bearing pad is completely separated by the lubricant oil film by the hydrodynamic pressure. This standard applies to oil-lubricated cylindrical plain bearings in test rigs and applications operating under conditions of full hydrodynamic lubrication. It includes dynamic loading under bimetallic and multilayer metallic plain bearings.