Nonlinear Materials

Magnetostatic

If a material has a permeability that varies with the flux density, a B vs. H curve (B-H curve) such as the one below is needed to describe the material's nonlinear behavior.

In nonlinear materials, the B-field (magnetic flux density) is a function of itself:

B = m_r(B)m_OH

where m_r(B), the relative permeability, depends on the magnitude of the B-field at each point in the material. Therefore, to model the magnetic behavior of the material, a curve relating the B-field directly to the H-field is used to describe the nonlinear relationship.

See also Advanced Nonlinear Options for Magnetostatic Solutions or Magnetization for Transient Solutions for more information about permeability and magnetization settings.