Analysis of transient response of cracked flexible rotor

机译：裂纹挠性转子的瞬态响应分析

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The transient vibration response of a cracked flexible rotor passing through its critical speed is analyzed for crack detection and monitoring. The effects of different factors such as various crack depths, acceleration, damping, torque, unbalance eccentricity, and rotor weight on the rotor vibrational response are studied. The breathing types of cracks are analyzed using simple hinge model in a case of shallow cracks, and the cosine function is employed in the case of deep cracks. The developed strategy enables the analysis of cracked rotor vibrational response with and without weight dominance, taking into account also the nonsynchronous rotor whirl. In addition, the local cross-flexibility for deep cracks is taken into account. Lastly, the effect of the crack depth on "stalling" of the rotor due to the limited driving torque is investigated.

机译：分析了裂纹挠性转子通过其临界速度时的瞬态振动响应，以进行裂纹检测和监测。研究了不同的裂纹深度，加速度，阻尼，扭矩，不平衡偏心率和转子重量等因素对转子振动响应的影响。对于浅裂纹，使用简单的铰链模型分析裂纹的呼吸类型，对于深裂纹，使用余弦函数。所开发的策略能够在不考虑重量支配的情况下分析裂纹转子的振动响应，同时还要考虑转子的非同步涡动。另外，考虑到了深裂纹的局部交叉柔韧性。最后，研究了由于驱动转矩有限而产生的裂纹深度对转子“摆动”的影响。

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来源
《Conference on Nondestructive Evaluation and Health Monitoring of Aerospace Materials and Composites III; 20040316-20040317; San Diego,CA; US》|2004年|P.142-150|共9页
会议地点 San Diego CA(US)
作者
Jerzy T. Sawicki; Andrew L. Gyekenyesi; George Y. Baaklini;
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作者单位

Cleveland State University, Dept. of Mechanical Engineering, Cleveland, OH 44115;

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原文格式 PDF
正文语种 eng
中图分类航空用材料;
关键词
rotor; crack; acceleration; vibrational response; detection; monitoring;

机译：转子;裂纹;加速度;振动响应;检测;监测;

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1. Transient response and breathing behaviour of a cracked Jeffcott rotor [J] . Darpe AK, Gupta K, Chawla A Journal of Sound and Vibration . 2004,第1a2期

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2. Study on the transient response and wavelet time-frequency feature of a cracked rotor passage through a subcritical speed [J] . J Zou, J Chen, J C Niu, The Journal of Strain Analysis for Engineering Design . 2003,第3期

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3. Condition monitoring of cracked rotors through transient response [J] . A. S. Sekhar, B. S. Prabhu Mechanism and Machine Theory: Dynamics of Machine Systems Gears and Power Trandmissions Robots and Manipulator Systems Computer-Aided Design Methods . 1998,第8期

机译：通过瞬态响应监测裂纹转子的状态
4. Analysis of transient response of cracked flexible rotor [C] . Jerzy T. Sawicki, Andrew L. Gyekenyesi, George Y. Baaklini, Society of Photo-Optical Instrumentation Engineers Conference on Nondestructive Evaluation and Health Monitoring of Aerospace Materials and Composites . 2004

机译：裂纹柔性转子瞬态响应分析
5. TRANSIENT AND STEADY-STATE RESPONSE OF FLEXIBLE ROTOR: REAL HYDRODYNAMIC BEARING SYSTEMS. [D] . MYRICK, SHERRELL THEODORE, JR. 1973

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7. Stability and stability degree of a cracked flexible rotor supported on journal bearings [O] . Meng Guang, Gasch Robert 1994

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8. Concepts for a Theoretical and Experimental Study of Lifting Rotor Random Loads and Vibrations. Phase 6-A Effects of Blade Torsion, of Blade Flap Bending Flexibility and of Rotor Support Flexibility on Rotor Stability and Random Response [R] . Hohenemser, K. H., Yin, S. K. 1972

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Analysis of transient response of cracked flexible rotor

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