旋转盘应力水平与温度分布的关联分析

付德斌; 丁水汀; 陶智; 杜发荣; 徐国强; 吴宏伟

旋转盘应力水平与温度分布的关联分析

北京航空航天大学航空发动机气动热力重点实验室, 北京 100083

计量
- 文章访问数: 1463
- HTML浏览量: 3
- PDF量: 464
- 被引次数: 0
出版历程
- 收稿日期: 2007-08-01
- 修回日期: 2008-01-23
- 刊出日期: 2008-04-28

Analysis of the effects of temperature distribution on stress level in a rotating disk

National Key Laboratory on Aero-engines, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing, 100083, China

摘要

摘要: 基于有限元的热-弹性耦合算法,在等冷气耗量条件下,对旋转轮盘内应力水平与其表面温度分布的关联性进行了数值研究.在转速为 000 r/min,内、外缘温度分别为00℃和50℃条件下,盘面温度沿半径方向采用不同的"V"形变化时,得到了盘内等效应力水平随盘面温度分布变化的规律.计算结果表明:采用"V"形变化的盘面温度分布可以有效地降低盘内应力水平,说明了盘内应力水平与盘表面的温度分布存在着较强的关联性,在保证航空发动机整体气动性能的前提下,通过控制涡轮盘表面温度分布来有效降低轮盘的应力水平是可行的.
- 航空、航天推进系统 /
- 应力水平 /
- 旋转轮盘 /
- 温度分布
Abstract: The effects of temperature distribution on stress level in a rotating disk at a fixed flux of cooling air was numerically studied using coupled thermal-elastic method based on the finite element technique.The rotating speed is fixed at 6000 r/min,and the temperatures of inner rim and outer rim are 600 ℃ and 650 ℃,respectively.Detailed information of stress level change with surface temperature distribution of rotating disk was discussed.Numerical results reveal that there exists a strong relation between the surface temperature distribution of rotating disk and stress level inside the rotating disk.The V-shape temperature distribution can significantly reduce the stress level.
- aerospace propulsion system /
- stress level /
- rotating disk /
- temperature distribution

HTML

参考文献(11)

[1]	沈达宽.航空发动机强度计算[M].北京:国防工业出版社,1980.
[2]	航空发动机设计手册[M].北京:航空工业出版社,2001.
[3]	孟春玲,饶寿其.高压涡轮盘的热弹性应力分析[J].工程力学,2000,17(3):133-137.MENG Chunling,RAO Shouqi.The thermal-elastic stress analysis of high pressure turbine plate[J].Engineering Mechanics,2000,17(3):133-137.
[4]	漆文凯,陈伟,高德平.航空发动机涡轮盘热-机械载荷耦合响应分析研究[J].机械设计与制造,2004(1);89-91.QI Wenkai,CHEN Wei,GAO Deping.Anlysis of turbine disc response in thermal-mechanical Ioads[J].Machinery Design and Manufacture,2004 (1):89-91.
[5]	Witek L.Failure analysis of turbine disc of an aero engine.[J].Engineering Failure Analysis,2006 (13):93-17.
[6]	苏清友.航空涡喷、涡扇发动机主要零部件定寿指南M].北京:航空工业出版社,2004.
[7]	杨兴宇,阎晓军,赵福星,等.某型航空发动机涡轮盘低循环疲劳寿命分析[J].机械强度,2004(26);229-233.YANG Xingyu,YAN Xiaojun,ZHAO Fuxing,et al.Low cycle fatigue life of and aeroengine gas turbine disk[J].Journal of Mechanical Strength,2004(26):229-233.
[8]	Melis M E,Zaretsky E V,August R.Probabilistic analysis of aircraft gas turbine disk life and reliability[R].AIAA97-10714.
[9]	Tong M T,Halliwell I,Ghosn L J.A computer code for gas turbine engine weight and disk life estimation[J].Journal of Engineering for Gas Turbines and Power,2004(4):268-270.
[10]	范钦珊.轴对称应力分析[M].北京:高等教育出版社,1985.
[11]	江和甫.对涡轮盘材料的需求及展望[J].燃气涡轮试验与研究,2002,15(4):1-6.JIANG Hefu.Requirements and forecast of turbine disk materials[J].Gas Turbine Experiment and Research,2002,15(4):1-6.