液压软管组件用累积损坏分析

[中文适用范围]： 本 SAE 信息报告旨在为液压系统分析师提供有助于选择和使用高压钢丝增强液压软管组件的程序。许多建筑、农业、工业或商业设备系统都使用承受不规则循环压力变化（不能用恒幅压力循环来近似）的液压软管组件。该文件将压力循环造成的损坏与正在评估的软管组件的压力-寿命性能曲线联系起来，使用线性损坏规则来预测疲劳寿命，类似于用于预测金属疲劳寿命的规则。有关该主题的更多详细信息，请参阅 SAE 论文第 880713 号。累积损坏计算的准确性与所评估的软管组件的工作压力历史和压力寿命性能的正确测量直接相关。软管组件的最终选择还必须考虑 SAE J1273 中所述的安装和维护。 [外文原描述]： This SAE Information Report is intended to provide the hydraulic system analyst with a procedure which will assist in the selection and use of high-pressure wire reinforced hydraulic hose assemblies. Many construction, agricultural, industrial, or commercial equipment systems utilize hydraulic hose assemblies that are subjected to irregular cyclic pressure variations (cannot be approximated by a constant amplitude pressure cycle). This document relates damage done by pressure cycles with the pressure-life performance curve for the hose assembly being evaluated, using a linear damage rule to predict fatigue life similar to that used for predicting metal fatigue life. More detailed information on the subject may be found in SAE Paper No. 880713. The accuracy of cumulative damage calculations is directly related to proper measurement of the service pressure history and pressure-life performance for the hose assembly being evaluated. Final selection of a hose assembly must also consider installation and maintenance as noted in SAE J1273.Cross Reference: 880713,J1273_201409,J343_201605,J517_201612