Abstract
Motion of a foreign object on a relay electrode is investigated numerically and experimentally. In the numerical approach, the motions of the foreign object and the relay electrode are analyzed the discrete element method (DEM) and the finite element method (FEM), respectively. The impulse force which a relay electrode gives to the foreign object is calculated by using the theory of elasticity. The charge simulation method is used for calculating electric field between relay electrodes. In the experimental approach, and the motion of the charged foreign object is tracked with a video camera. The foreign object is beforehand charged using a corona charging device and the electric charge was measured with an electrometer. As a result, the negatively charged foreign object bounds considerably compared with positively one. The adequacy of the analysis method is justified by comparing with the experimental results.
