摘要
对一端固定、一端滑动、受轴向简谐激励的屈曲梁的非线性动力学行为进行了实验研究。对固定的参数激励频率和阻尼，当参数激励幅值较小时梁的运动是周期的，但大幅值激励会使运动通过倍周期分岔变为混沌。实验得到了动态响应在参数平面上的分布，并研究了阻尼对分布区域的影响。实验结果为全面了解系统解的分布及该类结构的动力学设计提供了有价值的资料。
An experimental study of the nonlinear dynamic response of a clamped sliding buckled beam under a harmonic axial load is presented.For fixed damping and fixed excited frequency the motion of the beam under small amplitude of force is periodic,but becomes chaotic through period doubling bifurcation with increase of the force. The instability regions of the response are obtained from the experiments.The effect of damping on the instability regions is also investigated.The experimental results can provide valuable information for understanding the dynamic response of the oscillator for dynamic design of such kind of structures.
出处
《振动工程学报》
EI
CSCD
1997年第4期491-495,共5页
Journal of Vibration Engineering
基金
国家自然科学基金
关键词
非线性振动
参量激发
非线性振子
不稳定区域
nonlinear vibration
parametric excitation
nonlinear oscillator
instability regions
