某型发动机高压涡轮盘应力优化的研究  

Research on Stress Improvement of High Pressure Turbine Disk of a Certain Engine

作　　者：罗炜晗 LUO Weihan(Hunan Provincial Key Laboratory of Impeller Machinery for Small and Medium-sized Aero Engines,Hunan Power Machinery Research Institute of Aviation Development of China,Zhuzhou Hunan 412002)

机构地区：[1]中国航发湖南动力机械研究所中小型航空发动机叶轮机械湖南省重点实验室,湖南株洲412002

出　　处：《中国科技纵横》2020年第13期85-87,111,共4页China Science & Technology Overview

摘　　要：要:本文通过等比例放大CFM56-3的发动机布局图中尺寸获得CFM56-3发动机的高压涡轮盘模型尺寸,并建立三维模型,假设涡轮盘材料为Rene95,通过分析计算结果中轮盘的最大等效应力与材料的抗拉强度的比值,验证关于轮盘材料假设的合理性.然后将某些结构尺寸设为变量,并对不同变量取值的仿真模型进行结构强度分析,探寻轮心最大当量应力及应力分布因为结构尺寸改变而变化的规律,试图找到一种发动机轮盘的优化减重方法.In this theis,a high pressure turbine disk model is built by scaling up the dimensions in a CFM56-3 drawing.An assumption is made that the disk material is Rene 95.In order to validate the assumption of the material,the ratio of the max equivalent stress of the disk to the ultimate tensile strength of the material is calculated and the result is reasonable.After that,some structural parameters are introduced to get simulation results of cases with different structural parameters to find the change law of the max equivalent stress of the disk bore to look for a new method to disk weight reduction.

关 键 词：高压涡轮盘 结构尺寸变量 最大当量应力 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程]