【摘要】 本文对一端固定一端滑动承受轴向简谐载荷的屈曲梁的非线性响应进行了实验。研究了其基本参数共振和主参数共振两种情况，揭示了系统的倍周期分岔和混沌运动等复杂动力学行为。在某些情况下，混沌吸引子和周期吸引子共存，另一些则存在间歇混沌。给出了响应的时间历程、相图、频率谱和Ｐｏｉｎｃａｒｅ映射更多还原

【Abstract】 Experiments on the nonlinear response of a clamped sliding buckled beam to a harmonic axial excitation are presented. Two types of resonance(fundamental parametric resonance and principle parametric resonance) are studied, and the system′s complicated dynamic behaviors, such as period multiplying bifurcations and chaos, observed. It is found that in some cases, a chaotic attractor may coexist with a period attractor, and in some other cases only intermittent chaos occure. Some typical time histories, phase plane trajectories, Poincare maps, and frequency spectra of the response are given.更多还原