基于时频分析的质量慢变转子系统非线性动力学特性研究

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (20) : 105-110.

论文

基于时频分析的质量慢变转子系统非线性动力学特性研究

于涛1,2,3，王娇1,2，李英杰1,2，孙伟3，韩清凯3

作者信息 +

Study on nonlinear dynamics of rotor system with slowly-varying mass basedon time-frequency analysis

YU Tao1,2,3，WANG Jiao1,2，LI Ying-jie1,2，SUN Wei 3，HAN Qing-kai 3

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摘要

建立基于简单集中质量的质量慢变Jeffcott转子动力学方程，采用渐近法给出质量慢变转子系统解析分析过程，详细推导质量慢变转子系统响应解析解。研究、讨论具有单一质量慢变模型的转子系统非线性动力学响应，采用重分布小波尺度图对解析结果深入讨论，获得质量慢变转子系统特有的非线性动力学行为。结果可为慢变参数转子系统动力学与故障识别研究提供理论参考。

Abstract

The dynamic model of simplified-concentrated-mass based Jeffcott rotor system with slowly-varying mass is build. Analytic processing for rotor system with slowly-varying mass is introduced by adopting the asymptotic method. And the analytic solutions for response of the rotor system are deducted detailedly. With the analytic solutions and Reassigned Morlet scalograms, the nonlinear dynamics of rotor system with slowly-varying mass are discussed. The specific nonlinear dynamic characteristics for rotor system with slowly varying mass can be referred for research on slowly-varying parameter system and diagnosis of corresponding faults.

导出引用

于涛;;王娇;李英杰;孙伟;韩清凯. 基于时频分析的质量慢变转子系统非线性动力学特性研究[J]. 振动与冲击, 2014, 33(20): 105-110

YU Tao;;WANG Jiao;LI Ying-jie;SUN Wei;HAN Qing-kai . Study on nonlinear dynamics of rotor system with slowly-varying mass basedon time-frequency analysis [J]. Journal of Vibration and Shock, 2014, 33(20): 105-110