中功率涡桨发动机减振系统设计与试验研究  

Design and Experimental Study on Vibration Isolation System of Medium Power Turboprop Engine

作　　者：董万元[1] 陈永辉[1] 王建强[1] 陈春兰[1] 范勇军[1] 吴谋彬 DONG Wanyuan;CHEN Yonghui;WANG Jianqiang;CHEN Chunlan;FAN Yongjun;WU Moubin(Key Laboratory of Aerial Science and Technology for Aeroacoustics and Vibration,Aircraft Strength Institute of China,Xi′an 710065,China;Aecc Hunan Aviation Powerplant Research Institute,Zhuzhou 412002,Hu′nan,China)

机构地区：[1]中国飞机强度研究所航空声学与振动航空科技重点实验室,西安710065 [2]中国航发湖南动力机械研究所,湖南株洲412002

出　　处：《机械科学与技术》2023年第10期1760-1766,共7页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家民机科研专项基金项目。

摘　　要：针对涡桨飞机发动机振动严酷的问题,利用氢化丁腈橡胶设计了一种中功率涡桨发动机减振系统,基于Workbench ANSYS软件研究了含橡胶实体单元的减振系统动力学建模分析方法;再以加速度传递率为隔振性能评价准则,设计了中功率涡桨发动机减振性能试验系统,通过试验研究减振系统的减振性能。结果表明:在小变形假设下利用橡胶材料硬度估算其弹性模量,由线弹性模型模拟橡胶材料开展减振系统动力学仿真分析,仿真分析结果与扫频试验结果误差小于10%;通过随机振动试验测得减振系统对发动机1阶窄带激励的隔振效率大于70%,对2阶窄带激励的隔振效率大于85%,设计的减振系统对发动机窄带激励具有优良的隔振效果。Aiming at the severe vibration problems of turboprop aircraft engine,a medium power turboprop engine damping system was designed by using hydrogenated nitrile rubber(HNBR).By using the workbench ANSYS software,the dynamic modeling analysis method of the damping system with rubber solid element was studied.Then,taking the acceleration transmissibility as the evaluation criterion of vibration isolation performance,a medium power turboprop engine vibration reduction performance test system is designed,and the vibration reduction performance of the vibration reduction system is studied through the test method.The results show that under the assumption of small deformation,the elastic modulus of rubber material is estimated by the hardness of rubber material,and the dynamic simulation analysis of the damping system is carried out by simulating the rubber material with linear elastic model,and the difference between the simulation analysis results and the frequency sweep test results is below 10%;through the random vibration test,the vibration isolation efficiency of the damping system for the first-order narrow-band excitation of the engine is above 70%,and the vibration isolation efficiency for the second-order narrow-band excitation is above 85%.The designed damping system has the excellent vibration isolation effect for the narrow-band excitation of the engine.

关 键 词：涡桨发动机 减振系统 氢化丁腈橡胶 隔振效率 

分 类 号：TH113.1[机械工程—机械设计及理论] U441.3[建筑科学—桥梁与隧道工程]