Forces data collection

Four types of force data collections are available in Flux, corresponding to specific computation methods and/or approaches:

• The Simplified projective method dedicated to rotating machines is a computation method based on Maxwell tensor and dedicated to the most classical configurations of rotating machines (e.g. without eccentricity); it is an efficient and robust method based on the evaluation of forces in a virtual cylinder in the airgap of a rotating machine in order to subsequently project them on an imported mesh or on a Flux mesh. These values may finally be exported towards OptiStruct for a NVH analysis of the electrical machine.
• The Generalized projective method enables the user to compute forces on a computation support before projecting them on an imported mesh. Two computation methods are available to evaluate forces, the Maxwell approach and the nodal virtual work method. In the case of the Maxwell approach, the generalized projective method may be seen as an extension of the Simplified projective method dedicated to rotating machines which can be applied to any type of devices.
• The Direct method for surface forces is a general forces computation method applicable at the interface between two materials. Several computation methods are available. This collection must be applied on supports defined from the project geometry.
• The Direct method for volume forces (dFLapV) is based on the integration of the Laplace forces and may be applied on any volume data support. Being these forces generated by an interaction of the magnetic flux density with the current density, this approach is available only for the solid conductor regions and the coil conductor regions.