考虑轴向变形的锥形轮盘低循环疲劳试验研究  

Study on Low Cycle Fatigue Test of Taper Disc Considering Axial Deflection

作　　者：王海舟 杨雷 杨昌祺 卢序 WANG Hai-zhou;YANG Lei;YANG Chang-qi;LU Xu(AECC Shenyang Engine Research Institute,Shenyang 110015,China)

机构地区：[1]中国航发沈阳发动机研究所,沈阳110015

出　　处：《航空发动机》2020年第6期82-86,共5页Aeroengine

基　　金：航空动力基础研究项目资助。

摘　　要：某型发动机高压压气机Ⅰ级盘采用锥形结构,在装配预紧力和离心载荷的作用下产生轴向变形。为了考核该轮盘的低循环疲劳寿命,在传统轮盘低循环疲劳试验技术的基础上,提出了1种考虑轴向变形条件的锥形轮盘低循环疲劳寿命试验方法。针对轮盘结构与装配要求,计算分析工作状态下的轴向变形,优化设计了能够有效考核轮盘关键部位寿命的试验件、陪试件及试验工装,对比试验件在整机与试验器状态的应力水平,并在卧式旋转试验器上完成了试验件的低循环疲劳试验。试验结果表明:采用该方法可对高压Ⅰ级盘安全循环寿命进行有效考核。The 1 st stage disc of High Pressure Compressor(HPC)of a certain type of engine had taper disc configuration,which provided axial deflection under the action of assembly preload and centrifugal load.In order to check the low cycle fatigue life of the disc,a low cycle fatigue life test method of taper disc considering axial deflection was proposed based on the traditional low cycle fatigue test technique.According to the structure of disc and the requirements of assembly,the axial deflection in working condition was calculated and analyzed,and the test pieces,accompanying test pieces and test tools which could effectively check the life of the key parts of disc were optimized and designed.The stress level of the test piece in the engine and the test rig was compared,and the low cycle fatigue test of the test pieces was completed on the horizontal rotary test rig.The results show that the safe cycle life of the 1 st stage disc of HPC is effectively evaluated by this method.

关 键 词：锥形轮盘 轴向变形 低循环疲劳寿命 高压Ⅰ级盘 试验装置 试验方法 航空发动机 

分 类 号：V232.3[航空宇航科学与技术—航空宇航推进理论与工程]