By Philippe Wendling, Magsoft, with Patrick Lombard, Richard Ruiz and Christophe Guerin, Cedrat; and Vincent Leconte and Christian Bataille, Schneider ElectricTHREE-DIMENSIONAL modeling schemes for the analysis of magnetic actuators takes into account the interactions between the motion of the rigid body, the external circuit coupling and the finite element EM computation. A new technique has been developed to handle both translating and pivoting motion. These new schemes have been validated on an E-shaped magnetic actuator.A new modelling scheme presented in this White Paper increases the capabilities of FEM tools to handle motion in 3D problems. You can now model accurately both translating and pivoting motion, either with limited remeshing or none at all. Any re-meshing is performed automatically during the solving. This new motion feature can be used to compute multi-static, constant speed or fully mechanically coupled problems. The methods and its implementations in a 3D tool have been validated on a test case in 2D and 3D, as well as on a real device. The computed values and the measurements show very good correlation.These new features have been introduced into the 3D applications of FLUX, a commonly available CAD package.