硬弹簧Duffing隔振系统的隔振性能与分岔分析  

Vibration Isolation Performance and Bifurcation Analysis of Duffing Vibration Isolation Systems with Stiff Springs

作　　者：薛皓阳 Xue Haoyang(Lanzhou Jiaotong University School of Mechanical Engineering,Lanzhou,Gansu 730070,CHN)

机构地区：[1]兰州交通大学机电工程学院,甘肃兰州730070

出　　处：《模具制造》2024年第10期138-140,共3页Die & Mould Manufacture

摘　　要：随着隔振技术发展,在低频处的有效隔振成为重要研究对象,加装非线性元件也是实现低频隔振的常用手段。Duffing系统是一种非线性隔振系统,用于描述在外部驱动力和非线性恢复力作用下的振动现象,现广泛应用于微弱混沌信号检测,以该隔振系统为对象,运用Matlab对模型进行模拟分析研究其力传递率从而分析其整体与低频处隔振性能受参数的影响。利用分岔图配合相图和时域图研究硬弹簧Duffing隔振系统的动力学特性。With the development of vibration isolation technology,effective vibration isolation at low frequencies has become an important research object,and the addition of nonlinear components is also a common means of realising low-frequency vibration isolation.The Duffing system is a kind of nonlinear vibration isolation system,which is used for describing the vibration phenomenon under the action of the external driving force and nonlinear restoring force,and it is now widely used in the detection of weak chaotic signals.Taking this vibration isolation system as an object,the model is simulated and analyzed by Matlab to investigate its force transmission rate so as to analyze its overall performance and the performance at low frequencies affected by the parameters.To simulate this vibration isolation system,Matlab is used to simulate and analyse the force transfer rate and thus analyse the overall vibration isolation performance and the influence of parameters at low frequencies.The bifurcation diagram with phase diagram and time-domain diagram are used to study the dynamics of the stiff-spring Duffing vibration isolation system.

关 键 词：Duffing隔振系统 力传递率 分岔 

分 类 号：O175.14[理学—数学]