箔轴承.箔轴颈轴承的性能试验.摩擦系数和使用寿命下的静态负载能力试验

[中文适用范围]： 该文件描述了一种比较箔片轴颈轴承性能测试结果的方法，箔片轴颈轴承由空气（气体）润滑并由旋转轴旋转产生的气体动力支撑。 本文件中提出的测试程序旨在预测和评估箔片轴颈轴承的静载荷能力、摩擦系数和寿命，并比较这些参数在不同测试条件下的结果，即不同箔片轴承的尺寸、轴的转速、周围环境的压力和湿度。 由于测试条件可以改变，静负载能力的大小可以根据测试设置而改变。 本文档中描述的测试方法具有以下应用范围。 a) 评价静载能力的标准是稳态条件；即该方法适用于大小、载荷方向和转速均匀的有限运行条件。 b) 仅当箔片轴颈轴承在任意转速下处于均匀转动惯量时，才能应用评估程序。 c) 不考虑大小和方向随时间变化的动载荷。 [外文原描述]： This document describes a method for comparing the performance test results of foil journal bearings, which are lubricated by air (gas) and supported by the gas-dynamic force generated via the rotations of the rotating shaft. The test procedure proposed in this document aims to predict and evaluate the static load capacity, friction coefficient and lifetime of foil journal bearings and compare the results of these parameters under different test conditions, i.e. at varying dimensions of foil bearing, rotational speed of a shaft, pressure and humidity of the surroundings. The magnitude of the static load capacity can change according to the test setting, as the test conditions can be changed. The test method described in this document has the following application coverage. a) The criterion for evaluating the static load capacity is the steady-state condition; i.e. the method is applicable under limited operating conditions with uniform magnitude, load direction and rotational speed. b) The evaluation procedure can be applied only if the foil journal bearing is under a uniform rotating inertia at an arbitrary rotational speed. c) The dynamic load with time-variant magnitude and direction is not considered.