Method for calculating magnetic force characteristics, device for calculating magnetic force characteristics and computer program

摘要

A prestored database indicating a correspondence δ (depth) / ΔHcJ (coercive force increase) and a prestored database indicating information regarding the DY diffusion conditions (diffusion coefficient, diffusion flux and processing time with respect to Dy diffusion) are used to calculate the distribution of the Dy introduction amount in a magnet from the shape information of the magnet and the information on the Dy introduction side and the distribution of ΔHcJ in the magnet from the distribution of the Dy introduction amount. For a magnet having a coercive force that is not evenly distributed, a J / H curve is calculated using the calculated ΔHcJ distribution, and a demagnetizing factor at a predetermined temperature is calculated using a temperature coefficient.