基于非线性能量阱的双频激励非线性系统减振

孙斌; 吴志强

doi:10.21656/1000-0887.370379

基于非线性能量阱的双频激励非线性系统减振

doi: 10.21656/1000-0887.370379

孙斌^1,2,
吴志强¹

¹天津大学机械工程学院力学系;天津市非线性动力学与混沌控制重点实验室, 天津 300072;²中国民航大学航空工程学院飞机系, 天津 300300

基金项目: 国家重点基础研究发展计划(973计划)（2014CB046805）;国家自然科学基金（11372211;11672349）

详细信息

作者简介:
孙斌（1987—），男，博士生（E-mail: bsun_2015@163.com）;吴志强（1968—），男，教授，博士，博士生导师（通讯作者. E-mail: zhiqwu@tju.edu.cn）.

中图分类号: O328
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出版历程
- 收稿日期: 2016-12-14
- 修回日期: 2016-12-28
- 刊出日期: 2017-11-15

Vibration Suppression of Nonlinear Systems Under Dual-Frequency Excitations With Nonlinear Energy Sink

SUN Bin^1,2,
WU Zhi-qiang¹

¹Department of Mechanics, School of Mechanical Engineering, Tianjin University; Tianjin Key Laboratory of Nonlinear Dynamics and Chaos Control, Tianjin 300072, P.R.China;²Department of Aircraft, School of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, P.R.China

Funds: The National Basic Research Program of China (973 Program)(2014CB046805); The National Natural Science Foundation of China(11372211;11672349)

摘要

摘要: 针对某型民用航空发动机双频带激励特点，建立了单自由度线性振子耦合非线性能量阱（nonlinear energy sink，NES）的动力学模型.根据典型双转子发动机在巡航状态下低、高特征频率比（1∶4.74），为系统设定双频带简谐外激励.利用四阶Runge-Kutta算法，研究了耦合NES振子时系统的振动抑制特征，并从外激励频率对系统主振子动能、系统总体能量的影响等方面，与未耦合NES系统、耦合线性动力吸振器两种情况下的数值计算结果进行对比分析.研究结果表明NES对双频带外激励具有更好的振动抑制效果，用NES降低航空发动机振动有可行性.
- NES /
- 民用航空发动机 /
- 双频带 /
- 振动抑制
Abstract: In view of the dual-frequency excitation characteristics of a certain type of civil aero-engines, the dynamic model of a single DOF linear oscillator coupled with the nonlinear energy sink (NES) was established. At the low to high characteristic frequency ratio (1∶4.74) of the typical dual-rotor engine in cruise flight, the system was subjected to a dual-frequency harmonic excitation. The 4th-order Runge-Kutta algorithm was employed to study the vibration suppression effects of the system with the coupled NES. In the aspects of the influences of the external excitation frequencies on the kinetic energy of the main oscillator and the total energy of the system, etc, the numerical results were compared among the system with the NES, the one without the NES and another one coupled with a linear dynamic vibration absorber. The work shows that the NES has better vibration suppression effects on the dual-frequency excitation, and is feasible for the reduction of the vibration of aero-engines.
- NES /
- civil aero-engine /
- dual-frequency /
- vibration suppression

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参考文献(23)

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基于非线性能量阱的双频激励非线性系统减振

doi: 10.21656/1000-0887.370379

作者简介:
孙斌（1987—），男，博士生（E-mail: bsun_2015@163.com）;吴志强（1968—），男，教授，博士，博士生导师（通讯作者. E-mail: zhiqwu@tju.edu.cn）.

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Vibration Suppression of Nonlinear Systems Under Dual-Frequency Excitations With Nonlinear Energy Sink

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基于非线性能量阱的双频激励非线性系统减振

doi: 10.21656/1000-0887.370379

作者简介: 孙斌（1987—），男，博士生（E-mail: bsun_2015@163.com）;吴志强（1968—），男，教授，博士，博士生导师（通讯作者. E-mail: zhiqwu@tju.edu.cn）.

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出版历程

Vibration Suppression of Nonlinear Systems Under Dual-Frequency Excitations With Nonlinear Energy Sink

计量

出版历程

目录

作者简介:
孙斌（1987—），男，博士生（E-mail: bsun_2015@163.com）;吴志强（1968—），男，教授，博士，博士生导师（通讯作者. E-mail: zhiqwu@tju.edu.cn）.