Transient analytical method of vane forcing response under stator-rotor wake influence
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摘要: 对叶片强迫响应问题,提出应用瞬态分析的方法,针对转子叶片在前排静子叶片尾流激振情况下的位移和应力进行预估.流场进行全场三维非定常求解,将三维非定常气动力引入转子叶片有限元结构计算中,对尾流激振情况下叶片强迫响应问题进行瞬态分析,比较了不同转速下叶片的强迫响应,得到响应位移及应力变化的分析结果.采用叶片强迫响应瞬态分析方法,从流场的求解到结构响应的求解均应用成熟的通用软件,为工程应用该方法进行尾流激振情况下叶片振动应力预估及阻尼的研究提供了一个可行的方法.Abstract: Rotor blade forcing response problems due to the wake of front vane row was analyzed. A transient analytical method was presented for blade forcing response. Then displacement and stress could be predicted. The analysis of three-dimension unsteady flow field was performed with NUMECA to provide the wake influence force and the pressure was introduced into calculating structure dynamics(CSD). Structure analysis was performed by finite element package ANSYS using transient analysis type. Force boundary condition was written with ANSYS parametric design language(APDL), a scripting language for ANSYS. The displacement and stress under different rotate speed were calculated. Then compared them with Compbell method. For transient analytical method, whether flow field or structure analysis were both presented with well-rounded software, so it’s easy for using in engineering field.
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Key words:
- wake influence /
- forcing response /
- transient analytical method
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[1] Stuart M,Li He. Blade forced response prediction for industrial gas turbines part 1:methodologies Proceedings of the ASME Turbo Expo 2003. Volume 4:Oil and Gas Applications, Structures and Dynamics. :ASME ,2003:407-414 [2] Wei Ning, Stuart M, Li Yansheng, et al. Blade forced response prediction for industrial gas turbines part 2:verification and application Proceedings of the ASME Turbo Expo 2003. Volume 4:Oil and Gas Applications, Structures and Dynamics. :ASME ,2003:415-422 [3] 郭恩民.叶轮机流动诱发振动现象的非定常气动探索. 北京:北京航空航天大学 能源与动力工程学院,1997 Guo Enmin. Search of unsteady pneumatic phenomenon of fluid influence in impeller machine. Beijing:School of Jet Propulsion,Beijing University of Aeronautic and Astronautics, 1997(in Chinese) [4] 王梅,江和甫,吕文林,在尾流激振情况下叶片振动应力预估技术 中国航空学会动力分会发动机结构强度与振动专业委员会第十二届学术会议论文集.四川:青城山,2004:484-490 Wang Mei,Jiang Hefu,Lü Wenlin,Prediction of vane forcing response under wake influnce 12th Academic Conference Paper of Engine Structure Intensity and Vibration Council of China Society of Aeronautics and Astronautics. Sichuan:Qingcheng mountain,2004:484-490(in Chinese) [5] 祈明旭,丰镇平,KANG Shun,等,轴流透平级动静干涉的非定常效应及其对气动性能的影响 工程热物理学会热机气动热力学学术会议论文集. 中山:中国工程热物理学会,2002:395-401 Qi Mingxu,Feng Zhenping, KANG Shun, et al. Unsteady effection and influence of pneumatic performance under stator-rotor wake in axial-flow turbins Academic Conference Paper Corpus of Thermo-Engine Pneumatic Thermodynamics Conference of Society of Engineering Thermophysics. Zhongshan:China Society of Engineering Thermophysics,2002:395-401(in Chinese) -
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