基于飞行数据的高压涡轮叶片蠕变寿命评估  

Estimation of the creep life of high-pressure turbine blades based on flight data

作　　者：皮骏 杨磊 高树伟[2] 刘斯童 PI Jun;YANG Lei;GAO Shu-wei;LIU Si-tong(School of General Aviation, Civil Aviation University of China, Tianjin 300300;School of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300;College of Computer, Edmonds Community College, Lynnwood 98036, America)

机构地区：[1]中国民航大学通用航空学院,天津300300 [2]中国民航大学航空工程学院,天津300300 [3]埃德蒙社区大学计算机学院,美国林伍德98036

出　　处：《机械设计》2018年第12期72-76,共5页Journal of Machine Design

基　　金：中央高校基本科研业务费民航大学专项资助项目(3122013H001)

摘　　要：针对民用航空发动机的特点,提出一种基于机载飞行数据的民用航空发动机高压涡轮叶片蠕变寿命评估方法。从机载飞行数据中提取发动机的实际使用载荷谱,通过有限元仿真得到高压涡轮叶片的应力和温度载荷谱,借助寿命评估模型计算一个飞行循环对高压涡轮叶片造成的累计损伤量,进而得到该发动机高压涡轮叶片的蠕变寿命。该方法对民航发动机的寿命预测、避免因高压涡轮叶片提前到寿而影响飞行安全和维修方案的制定具有重要意义。Based on the characteristics of civil aircraft engine,this paper presents a method to evaluate the creep life of high-pressure turbine blades based on airborne flight data.The actual load spectrum of the engine is extracted from the airborne flight data,and the stress and temperature load spectrum of high-pressure turbine blades are obtained by means of finite element simulation.Then,the cumulative damage caused by a flight cycle to high-pressure turbine blades is calculated with the aid of the model of life evaluation,and the creep life of high-pressure turbine blades is obtained.This method is of great significance to predict the life of civil aircraft engine and avoid the influence of the expiring life of high-pressure turbine blades upon flight safety and maintenance.

关 键 词：航空发动机 机载飞行数据 高压涡轮叶片 有限元仿真 寿命评估 

分 类 号：V232.4[航空宇航科学与技术—航空宇航推进理论与工程]