For smart system designs based on elastic structures, buckled elastic sheets where both edges are clamped have gained significant attention as they exhibit interesting dynamic behaviors, namely, snap-through motion. In this study, the critical conditions and post-equilibrium responses of tandem buckled sheets under unbounded uniform flow are investigated experimentally to understand the mutual interactions of the two sheets for potential applications as novel energy harvesting systems. The critical velocity at which they initiate snap-through oscillations from an equilibrium state is examined by varying the gap distance and initial buckled shape of the tandem sheets. The dynamic characteristics of the oscillation state, such as the amplitude, frequency, and phase difference, are examined with a particular focus on comparing the behaviors of the two sheets. Regardless of the gap distance, free-stream velocity, and initial buckled shape, the front and rear sheets exhibit similar deformation magnitudes and bending energies under repeated snap-throughs, which is notably different from flapping flag models with a free end.

对于基于弹性结构的智能系统设计，两个边缘都被夹紧的弯曲弹性片材受到关注，因为它们表现出令人感兴趣的动态行为，即快速移动。在这项研究中，通过实验研究了双曲屈曲板在无边界均匀流动下的临界条件和平衡后反应，以了解两张板的相互作用，从而有可能作为新型的能量收集系统应用。通过改变缝隙距离和串联片的初始弯曲形状，可以检查它们从平衡状态引发快速振荡的临界速度。振荡状态的动态特性，例如幅度，频率和相位差，我们将重点研究两张纸的行为进行比较。不管间隙距离，自由流速度和初始弯曲形状如何，在反复咬合下，前后片材都具有相似的变形幅度和弯曲能，这与带有自由端的拍板标记模型显着不同。