摩擦温度对篦齿径向裂纹形成的影响
收稿日期: 2024-09-12
修回日期: 2024-11-26
录用日期: 2024-12-23
网络出版日期: 2024-12-30
Influence of friction temperature on radial crack formation in turbine blade crown fins
Received date: 2024-09-12
Revised date: 2024-11-26
Accepted date: 2024-12-23
Online published: 2024-12-30
涡轮动叶叶冠篦齿径向裂纹的快速扩展会危及发动机的安全运行，为明确摩擦温度对裂纹形成的影响，使用自建的高速摩擦实验台开展实验研究，解析分析径向裂纹的形成机理及摩擦温度和对流换热系数对裂纹形成的影响，并基于Abaqus的XFEM模型进行数值分析及验证。实验表明摩擦温度温升在200 ℃以上才能形成径向裂纹，得到了形成径向裂纹的温度下降曲线拟合式。解析分析表明径向裂纹的形成与摩擦温度、环境温度、对流换热系数和篦齿的导热有关。数值计算得到了径向裂纹的形成过程，温度低于1 068 ℃时没有萌生裂纹，温度超过1 124 ℃在压应力的作用下在顶面中间形成了沿周向扩展的裂纹，在1 068 ℃~1 124 ℃的温度范围在拉应力的作用下形成径向裂纹。摩擦温度和对流换热系数的增大会促进径向裂纹的形成，摩擦温度的影响更明显。
杨毅成 , 杨卫华 , 张倍萱 , 宋志恒 , 米兆国 . 摩擦温度对篦齿径向裂纹形成的影响[J]. 航空学报, 2025 , 46(10) : 231196 -231196 . DOI: 10.7527/S1000-6893.2024.31196
The rapid propagation of radial cracks in the crown fin of turbine blades can endanger the safe operation of the engine. In order to clarify the influence of friction temperature on crack formation， a custom-designed high-speed friction test rig was used to conduct experimental research. The formation mechanism of radial cracks and the influence of friction temperature and convective heat transfer coefficient on crack formation were analyzed， and numerical analysis were conducted based on Abaqus’ XFEM model. Experiments indicated that radial cracks exclusively manifest when the friction temperature surpasses 200 ℃， and a fitting formula for the temperature drop curve that forms radial cracks was obtained. Numerical simulations illuminated the process of radial crack development. Specifically， no cracks were initiated below 1 068 ℃， whereas above 1 124 ℃， cracks propagated circumferentially across the top surface’s midsection under compressive stress. Within the temperature range of 1 068 ℃ to 1 124 ℃， radial cracks emerged under tensile stress conditions. Both elevated friction temperatures and convective heat transfer coefficients expedite radial crack formation， with friction temperature exerting a more pronounced influence.
| 1 | TURNQUIST N， BURNETT M， BOWSHER A， et al. Brush seals for improved steam turbine performance［R］. Washington， D.C.： NASA， 2000. |
| 2 | ZANIEWSKI D， KLIMASZEWSKI P， KLONOWICZ P， et al. Performance of the honeycomb type sealings in organic vapour microturbines［J］. Energy， 2021， 226： 120242. |
| 3 | CHUPP R E， HENDRICKS R C， LATTIME S B， et al. Sealing in turbomachinery［J］. Journal of Propulsion and Power， 2006， 22（2）： 313-349. |
| 4 | SOLER D， SAEZ DE BURUAGA M， ARRAZOLA P J. Experimental investigation of contact forces and temperatures in rubbing interactions of honeycomb interstate seals［J］. IOP Conference Series： Materials Science and Engineering， 2021， 1193（1）： 012070. |
| 5 | DELEBARRE C， WAGNER V， PARIS J Y， et al. An experimental study of the high speed interaction between a labyrinth seal and an abradable coating in a turbo-engine application［J］. Wear， 2014， 316（1-2）： 109-118. |
| 6 | PYCHYNSKI T， H?FLER C， BAUER H J. Experimental study on the friction contact between a labyrinth seal fin and a honeycomb stator［J］. Journal of Engineering for Gas Turbines and Power， 2016， 138（6）： 062501. |
| 7 | BOGDANOVICH P N， TKACHUK D V. Thermal and thermomechanical phenomena in sliding contact［J］. Journal of Friction and Wear， 2009， 30（3）： 153-163. |
| 8 | ROSSMANN A. Die Sicherheit von turbo-flugtriebwerken［M］. Band 2. Turbo Consult， 2000. |
| 9 | OLIVER M， CORINA S， SARAH W， et al. Modelling the rubbing process in labyrinth seals［J］. Proceedings of GPPS Forum 18 Global Power and Propulsion Society. 2018. |
| 10 | PYCHYNSKI T， DULLENKOPF K， BAUER H J. Theoretical study on the origin of radial cracks in labyrinth seal fins due to rubbing［C］∥ASME Turbo Expo 2013： Turbine Technical Conference and Exposition. 2013. |
| 11 | DELEBARRE C， WAGNER V， PARIS J Y， et al. Tribological characterization of a labyrinth-abradable interaction in a turbo engine application［J］. Wear， 2017， 370： 29-38. |
| 12 | LU B， XUAN H J， MA X J， et al. The influence of the axial rub added in the radial rub on the wear of the seal fins during the high speed rub of labyrinth-honeycomb seal［J］. Materials， 2021， 14（8）： 1997. |
| 13 | YANG Y C， MI Z G， ZHANG W C， et al. Experimental study on the effect of rubbing mode on radial crack initiation in labyrinth seal fins of shrouded turbine blade［J］. Aerospace， 2022， 9（8）： 441. |
| 14 | ZHANG N， XUAN H J， GUO X J， et al. Investigation of high-speed rubbing behavior of labyrinth-honeycomb seal for turbine engine application［J］. Journal of Zhejiang University： Science A， 2016， 17（12）： 947-960. |
| 15 | YANG Y C， CHANG J Q， MI Z G， et al. Experimental and numerical study on the influence of rubbing force on radial crack initiation in labyrinth seal fins［J］. Aerospace， 2022， 9（12）： 831. |
| 16 | ABAQUS. SIMULIA user assistance： About fracture mechanics［M］. Paris： Dassault Group； 2019. |
| 17 | ZHANG P， ZHANG L， BAXEVANAKIS K P， et al. Modelling short crack propagation in a single crystal nickel-based superalloy using crystal plasticity and XFEM［J］. International Journal of Fatigue， 2020， 136： 105594. |
| 18 | SIDHARTH R， NIKHIL R， KRISHNAN S A， et al. Crack initiation and growth in 316LN stainless steel： Experiments and XFEM simulations［J］. Engineering Fracture Mechanics， 2022， 274： 108770. |
| 19 | FISCHER T， WELZENBACH S， MEIER F， et al. Modeling the rubbing contact in honeycomb seals［J］. Continuum Mechanics and Thermodynamics， 2018， 30（2）： 381-395. |
| 20 | HüHN L， RIEGER F， BLEIER F， et al. Extensive investigations on radial crack formation in labyrinth seals of aircraft engines［C］∥Proceedings of the Deutscher Luft- und Raumfahrtkongress. 2018. |
| 21 | YAN X， DAI X B. Experimental investigation on wear behavior of rectangular labyrinth fin against high-speed rotor［J］. Journal of Engineering for Gas Turbines and Power， 2021， 143（12）： 121001. |
| 22 | YANG Y C， BI Y C， DUAN C P， et al. Local heat transfer measurements of the fin on the blade crown by infrared thermography［J］. International Journal of Thermal Sciences， 2024， 206： 109341. |
| 23 | GOSWAMI T， HANNINEN H. Dwell effects on high temperature fatigue damage mechanisms Part Ⅱ［J］. Materials & Design， 2001， 22（3）： 217-236. |
| 24 | 《中国航空材料手册》委员会. 中国航空材料手册. 第2卷， 变形高温合金，铸造高温合金［M］. 北京： 中国标准出版社， 2002. |
| China Aeronautical Materials Handbook Committee. China aeronautical materials handbook， Band 2 Deformed superalloy， cast superalloy［M］. Beijing： Standards Press of China， Beijing： 2002 （in Chinese）. |
/
| 〈 |
|
〉 |
CJA