详细介绍了俄罗斯OCT 1指南关于航空液压泵加速寿命试验载荷谱制定的详细方法和流程。在疲劳、磨损、老化三种液压泵的主要失效模式中,分别阐述了考虑疲劳(斜盘组件、分油组件、供油调节组件、轴承、弹簧)、磨损(柱塞副、滑靴副、配油盘副)、老化(橡胶密封件)相关部件的加速寿命试验载荷谱的计算过程。并结合国内液压泵产品的研制水平和耐久试验现状,提出了确定加速试验载荷谱的简化流程和综合权衡方法。研究表明,实施液压泵的加速寿命试验需要借鉴粘弹性润滑摩擦学理论、结构疲劳分析方法、橡胶热老化过程等研究领域的研究成果,并以液压泵为对象开展大量的常规载荷和加速载荷工况下的基础对比试验。在虚拟技术快速发展的背景下,开展液压泵虚拟试验能够对实施加速寿命试验提供必要的补充。
A specification (OCT 1 00389-80) developed and utilized in Russia is referred in this paper to deeply introduce the methods and procedures while designing the load spectrum for the Accelerated Lifetime Test (ALT) of aircraft hydraulic pump. Most components related to the main three failure modes (fatigue, wear, and thermal ag- ing) are considered respectively. Moreover, fatigues always occur on the swash plate assembly, flow rate regulator assembly, bearing, spring, and so on. Wears always occur on the barrel/piston pair, slipper/swash plate pair, and barrel/port plate pair. Thermal aging always occurs on the seals with rubber rings. A feasible and simplified proce- dure is presented for the load spectrum design of ALT. Fundamental research results on the fields of elasto-hydrody- namic lubrication, structure fatigue and thermal aging of rubber are essential; and repeated and contrast tests under normal and accelerated running conditions are both necessary before specifying the ALT processing of aircraft hy- draulic pump. Finally, we recommend the virtual tests as the supplementary way to improve the technology of ALT.