标题： 悬臂梁中的内在耗散 显示英文标题

标题： Intrinsic dissipation in cantilevers

摘要： 我们考虑速度无关的摩擦力对悬臂阻尼的影响。 结果表明，这种耗散机制会导致悬臂振动中的非线性效应。 非线性大小随着悬臂速度的降低而增加。 我们的分析使得能够理解实验[Stipe等人，PRL 87, 096801 (2001)]，在这些实验中，仅在小振幅下观察到了悬臂固有频率的振幅依赖性和异常耗散。 显示英文摘要

摘要： We consider the effects of a velocity-independent friction force on cantilever damping. It is shown that this dissipation mechanism causes nonlinear effects in the cantilever vibrations. The size of the nonlinearity increases with decreasing cantilever velocity. Our analysis makes it possible to understand experiments [Stipe et al, PRL 87, 096801 (2001)] where an amplitude dependence of the cantilever eigenfrequency and anomalous dissipation was observed only at small amplitudes.