气冷涡轮叶片振动特性分析  

Vibration characteristics analysis of air-cooled turbine blades

作　　者：徐涛 王强 唐洪飞 Xu Tao;Wang Qiang;Tang Hongfei(College of Energy and Power Engineering, North University of China, Shanxi Taiyuan, 030051, China;AECC Sichuan Gas Turbine Establishment, Sichuan Chengdu, 610500, China)

机构地区：[1]中北大学能源动力工程学院,山西太原030051 [2]中国航发四川燃气涡轮研究院,四川成都610500

出　　处：《机械设计与制造工程》2022年第3期63-66,共4页Machine Design and Manufacturing Engineering

摘　　要：研究了某种材料的气冷涡轮叶片的自由模态以及在离心力场作用下的模态,分别得到两种因素下的叶片振型图,并绘出了该转速范围下的坎贝尔图。研究发现离心力场对涡轮叶片的影响较小,但两种因素下均出现了相同的危险振型,同时找到了叶片在实际工作中可能会产生共振的转速范围。所得结论对航空发动机叶片的设计具有一定的工程应用价值。In this paper,the free modal and the modal under the action of centrifugal force field of a certain material air-cooled turbine blade are studied,and the modal figure under the two factors are obtained respectively,and the campbell diagram under the speed range is drawn.It is found that the centrifugal force field has little influence on turbine blades,but the same dangerous vibration modes appear under the two factors.At the same time,the speed range where the blades may produce resonance in practical work is found.The results are valuable for aeroengine blade design.

关 键 词：涡轮叶片 模态分析 振型 频率 坎贝尔图 

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]