民用涡轴发动机动力涡轮盘破裂转速研究  

Study on rupture speed of power turbine disk for a civil turboshaft engine

作　　者：聂卫健 邓旺群 皮滋滋 卢波 刘文魁 NIE Wei-jian;DENG Wang-qun;PI Zi-zi;LU Bo;LIU Wen-kui(AECC Hunan Aviation Powerplant Research Institute,Zhuzhou 412002,China;Key Laboratory of Aero-engine Vibration Technology,Aero Engine Corporation of China,Zhuzhou 412002,China)

机构地区：[1]中国航发湖南动力机械研究所,湖南株洲412002 [2]中国航空发动机集团航空发动机振动技术重点实验室,湖南株洲412002

出　　处：《燃气涡轮试验与研究》2021年第5期33-38,共6页Gas Turbine Experiment and Research

摘　　要：以民用涡轴发动机动力涡轮盘为研究对象,建立了动力涡轮一级盘和动力涡轮二级盘的有限元分析模型,采用平均应力法和弹塑性有限元法分别计算得到了两级动力涡轮盘的破裂转速。设计了试验工装,进行了工装和配重叶片强度分析,完成了破裂转速测量试验,获得了两个轮盘的破裂转速和破裂形式,并与计算结果进行了对比分析。研究表明:两个动力涡轮盘的破裂形式均为子午面破裂;与弹塑性有限元法相比,平均应力法的计算误差较大。此研究可为该型涡轴发动机的动力涡轮盘优化设计以及同类型轮盘破裂转速分析与试验提供借鉴和参考。Taking power turbine disks of a civil turboshaft engine as the study object,the finite element models of the first and second stage disk of power turbine were set up,the rupture speeds of two stage tur⁃bine disks were calculated respectively by mean stress and elastic-plastic methods.Test fixtures were de⁃signed and intensity analysis of fixtures and weight blade were carried out,and the rupture speed tests were completed,the rupture speeds and forms were obtained,and the results were contrasted and analyzed with the calculation results.The research results show that two power turbine disks were all ruptured along the meridian plane.Besides,calculation error of mean stress method is larger than that of elastic-plastic meth⁃od.This study can provide reference for the optimized design of power turbine disk,as well as the analysis and test of the disk rupture speed.

关 键 词：航空发动机 动力涡轮盘 破裂转速 平均应力法 弹塑性有限元法 试验验证 

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]