DC Magnetics

For static models, with support for nonlinear materials, permanent magnets, DC currents and various boundary conditions.

About This Module

The DC Magnetics (magnetostatic) module analyzes problems that require computing a static magnetic field, where the field source can be lumped or distributed DC currents, permanent magnets, or an external field defined through boundary conditions. DC Magnetics is similar to AC Magnetics in that the two are equivalent whenever the current frequency is low enough for the problem to be treated as static. Unlike AC Magnetics, however, the DC Magnetics module allows any number of nonlinear magnetic materials in the field model, as well as permanent magnets with known coercive force.

The DC Magnetics module is used in the design and analysis of electromagnets, motors, magnetic shields, permanent magnets, disk drives and similar devices.

DC Magnetics Features

Materials: linear and nonlinear permeability
Dedicated B-H curve editing tool
Permanent magnets: linear or nonlinear demagnetization curves supported
Superconductors
Distributed and lumped currents
First-kind (Dirichlet) or second-kind (Neumann) boundary conditions
The axisymmetric formulation uses dedicated approximation functions to ensure high accuracy near the axis of rotation
Results: field distribution (flux density, field strength, magnetic potential, permeability, energy density), self and mutual inductance, electromagnetic force, torque and other integral quantities
Coupling: electromagnetic force can be used in stress analysis of any part (magnetic-structural coupling); the magnetic state from one DC Magnetics problem can be imported into another