3-D Steady-State Eddy-Current Damping and Stiffness Terms for a Finite Thickness Conductive Plate

In this paper, the 3-D forces created by induced eddy currents in a conductive plate of finite thickness are derived using the concept of magnetic charge and energy. Using this approach the exact steady state based eddy-current damping and stiffness matrices for an arbitrary magnetic source moving above a conductive plate are derived. The damping and stiffness terms caused by both angular and spatial motion are accounted for. The presented equations can be utilized to create a linear state-space eddy-current force model.