摘要
为了抑制转子系统的扭转振动,提出了一种双稳态非线性能量阱(bi-stable nonlinear energy sink,BNES).首先介绍了BNES的结构和工作原理,在此基础上建立了转子-BNES耦合系统的动力学方程.然后利用数值计算方法,对BNES在瞬态和稳态激励下的振动抑制能力进行了研究,并与相同转动惯量的线性动力吸振器(linear dynamic vibration absorber,LDVA)进行了对比.最后,搭建测试平台,试验验证了BNES对转子系统扭转振动抑制的能力.研究结果表明,该BNES对转子系统的瞬态响应以及稳态响应具有良好的振动抑制效果;在给定的参数下,BNES的振动抑制能力优于LDVA.
A bi-stable nonlinear energy sink(BNES)is proposed to suppress the torsional vibration of rotor systems.Firstly,the structure and working principles of BNES are introduced,and the dynamic equation of the rotor-BNES system is established.Then,the vibration suppression performance of BNES under transient and steady-state excitation is studied by the numerical calculation method,and compared with the linear dynamic vibration absorber(LDVA)with the same moment of inertia.Finally,a test platform is built to verify the capacity of BNES to suppress the torsional vibration of the rotor system.It is shown that the proposed BNES has a good vibration suppression effect on the transient response and steady-state response of the rotor system,and under the given parameters,the vibration suppression performance of BNES is better than that of LDVA.
作者
窦金鑫
姚红良
曹焱博
郭俞良
DOU Jin-xin;YAO Hong-liang;CAO Yan-bo;GUO Yu-liang(School of Mechanical Engineering&Automation,Northeastern University,Shenyang 110819,China)
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2023年第6期790-798,共9页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(52075084).
关键词
双稳态
非线性能量阱
转子系统
扭转振动
振动抑制
bi-stability
nonlinear energy sink(NES)
rotor system
torsional vibration
vibration suppression
