摘要
以原子力显微镜单自由度模型为研究对象,在考虑激励和摩擦的情况下,应用相轨迹、Poincare图、分叉图等对Lennard-Jonespotential力场模型系统进行分析计算,说明在其他参数不变激励频率为基频率时激励振幅对杆的影响,显示随着激励振幅的增大系统将发生分叉,在经过倍周期分叉后系统产生混沌。
In this we model the microcantilever-sample in an Atomic Force Microscope by a single mode.By use of the Phase trajectory、poincare maps、bifurcation map,the dynamical behaviors are identified based on the numerical solutions of the governing equations.The dynamical behavior of a soft silicon probesilicon sample system is studied.The results demonstrate the effect of excitation amplitude while other parameters are fixed.Numerical simulations indicate that periodic and chaotic motions occur in the system.
出处
《机械设计与制造》
北大核心
2010年第6期178-179,共2页
Machinery Design & Manufacture
关键词
原子力显微镜
分叉
混沌
Atomic force microscope（AFM）
Bifurcation
Chaotic motions
