Abstract
We used a high-speed video camera to observe the behavior of sliders in a 3.5-inch drive (contact-start-stop system) that was subjected to an external shock. The observation showed that the sliders jump most easily when the magnitude of the shock pulse is large and its duration time is short. We also investigated the jumping phenomena by measurement and FEM analysis. The FEM results show that the slider jumps when the inertia force of the slider, due to the vibration after the external shock, exceeds the load applied to the slider. And it is concluded that the influence of the vibration of the guide arm on the inertia force is lager when the duration time is shorter.
