某航空发动机模拟转子动力学试验方案优化  

Optimization of the Dynamic Test Scheme of an Engine Simulated Rotor

作　　者：王桢 杨海 古贤志 WANG Zhen;YANG Hai;GU Xianzhi

机构地区：[1]中国航发湖南动力机械研究所,湖南株洲412002

出　　处：《科技创新与应用》2024年第27期1-6,共6页Technology Innovation and Application

摘　　要：针对某航空发动机动力涡轮模拟转子动力特性试验过程中发生的设备动力输出轴振动故障,提出在试验器与转子试验件之间增设中支点的优化方案,并通过有限元模型对新方案的试验转子系统进行动力学分析。从分析结果来看,增加中支点不但可以抑制动力输出轴的振动响应,还能减小动力输出轴对模拟转子动力学特性的影响。采用优化方案后,在后续的试验过程中,动力输出轴的振动得到控制,模拟转子平稳地运行到试验目标转速。研究结果表明,在试验器与转子试验件之间设置中支点的试验方案可以提高动力输出轴的稳定性,为转子试验提供安全保障。In view of the vibration fault of the power output shaft occurred in the dynamic characteristic test of an aero-engine power turbine simulated rotor,an optimization scheme of adding a middle fulcrum between the tester and the rotor test piece is put forward.The dynamics of the test rotor system of the new scheme is analyzed by finite element model.From the analysis results,increasing the middle fulcrum can not only restrain the vibration response of the power output shaft,but also reduce the influence of the power output shaft on the dynamic characteristics of the simulated rotor.After adopting the optimization scheme,in the subsequent test process,the vibration of the power output shaft is controlled,and the simulated rotor runs smoothly to the target speed of the test.The research results show that the test scheme of setting the middle fulcrum between the tester and the rotor test piece can improve the stability of the power output shaft and provide safety guarantee for the rotor test.

关 键 词：转子 动力学试验 动力输出轴 中支点 优化方案 

分 类 号：V231.96[航空宇航科学与技术—航空宇航推进理论与工程]