Vibration localization of cracked impellers of centrifugal compressors

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (6) : 108-113.

WANG Shuai,ZI Yanyang,HE Zhengjia

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Abstract

With regard to the mistuning and crack problems of centrifugal impellers operating under complex conditions, the effects of crack and mistuning on the forced response and vibration localization of centrifugal impellers were investigated.3D finite element models of impellers were established for the dynamic analysis of complex impellers.Several contact pairs were defined on the crack surfaces to simulate the nonlinear crack breathing effects.Then,the hybrid interface component mode synthesis method was employed to reduce the number of degrees of freedom of the system.The method can reply the chanllenges of huge computation requirment and convergence in the dynamic response computation of nonlinear system by using directly 3D finite element models.The Monte Carlo method was employed to statistically study the effects of random mistuning and crack fault on the vibration localization of impellers.The results show that both the crack and mistuning will significantly affect the dynamic response of impellers and will lead to the localization of energy on certain blades.

Key words

centrifugal impeller / vibration localization / crack / mistuning / component mode synthesis method

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WANG Shuai,ZI Yanyang,HE Zhengjia. Vibration localization of cracked impellers of centrifugal compressors[J]. Journal of Vibration and Shock, 2017, 36(6): 108-113

References

[1] 赵问银, 张家忠, 周成武.大型离心叶轮振动模态局部化特性研究[J].应用力学学报, 2012, 29(6)：699-704.
ZHAO Wenyin,ZHANG Jiazhong,ZHOU Chengwu. Study on the vibration localization in the centrifugal Impeller with periodic structures[J]. Chinese Journal of Applied Mechanics, 2012, 29(6)：669-704.
[2] KUSHNER F, RICHARD S J, STRICKLAND R A. Critical review of compressor impeller vibration parameters for failure prevention[C]. Proceedings of the Twenty-Ninth Turbomachinery Symposium, 2000：103-112.
[3] 白斌, 白广忱, 童晓晨, 等. 整体叶盘结构失谐振动的国内外研究状况[J].航空动力学报, 2014, 29(1)：91-103.
BAI Bin, BAI Guangchen, TONG Xiaochen, et al. Research on vibration problem of integral mistuned bladed disk assemblies at home and aboard[J]. Journal of Aerospace Power, 2014, 29(1)：91-103.
[4] SAITO A, CASTANIER M P, PIERRE C. Effects of a Cracked Blade on Mistuned Turbine Engine Rotor Vibration[J]. Journal of Vibration and Acoustics, 2009, 131(061006)：1-9.
[5] 赵志彬, 贺尔铭, 王红建. 叶盘振动失谐敏感性与频率转向特性内在关系研究[J]. 机械科学与技术, 2010, 29(12)：1606-1611.
ZHAO Zhibin, HE Erming, WANG Hongjian. Correlation Between Frequency Veering and Vibration Mistuning Sensitivity of a Bladed Disk[J]. Mechanical Science and Technology for Aerospace Engineering, 2010, 29(12)：1606-1611.
[6] JUNG C, SAITO A, EPUREANU B I. Detection of Cracks in Mistuned Bladed Disks Using Reduced-Order Models and Vibration Data[J]. Journal of Vibration and Acoustics, 2012, 134(061010)：1-10.
[7] 王艾伦, 李帅. 含呼吸式裂纹的失谐叶盘系统响应特性研究[J]. 中国机械工程, 2013, 24(2)：169-174.
WANG Ailun, LI Shuai. Forced Response Characteristics of Mistuned Bladed Disk with Breathing Crack[J]. Chinese Journal of Mechanical Engineering, 2013, 24(2)：169-174.
[8] SINGH M P, THAKUR B K, SULLIVAN W E, et al. Resonance Identification for Impellers[C]. Proceedings of the Thirty-Second Turbomachinery Symposium, 2003：59-70.
[9] 孟继纲, 王跃方, 杨树华. 离心压缩机闭式叶轮晶粒黏着失谐动力特性研究[J]. 风机技术, 2010：7-12.
MENG Jigang, WANG Yuefang, YANG Shuhua. Research on Dynamic Characteristics of Mistuned Shrouded Impeller with Salt Crystallization in Centrifugal Compressor[J]. Compressor, Blower & Fan Technology, 2010：7-12.
[10] 陈睿, 刘新灵, 蔡显新, 等. 离心叶轮叶片裂纹产生原因分析[J]. 理化检验(物理分册), 2011, 47：60-63.
CHEN Rui, LIU Xinling CAI Xianxin, at al. Reason Analysis on Cracks in Centrifugal Wheel Blade[J]. Physical Testing and Chemical Analysis(Part A:Physical Testing), 2011, 47：60-63.
[11] POUDOU O, PIERRE C. Hybrid frequency-time domain methods for the analysis of complex structural systems with dry friction damping[C]. Structural Dynamics and Materials Conference, Norfolk, VA, USA, 2003：111-124.