Magnetostatic Analysis for Static Magnetic Fields and Forces

Magnetostatic Analysis in EMWORKS

Magnetostatic analysis in EMWORKS solves static magnetic fields from DC currents and permanent magnets in both 3D and 2D geometries.

• Fields from coils, windings, and busbars under DC excitation

• Fields and forces from permanent magnets

• Flux density, field strength, and reluctance paths in cores and air gaps

• Basis for force, torque, and inductance calculations in magnetic devices

Key Features of EMWORKS Magnetostatic Analysis

• 2D and 3D magnetostatic fields: Static magnetic fields from DC currents and permanent magnets in 2D and 3D geometries.

• Nonlinear magnetic materials: B–H curves, saturation, and flux distribution in cores, yokes, and air gaps.

• Flux, field, and reluctance paths: Magnetic flux density B, field strength H, flux lines, and main reluctance paths.

• Force and torque: Magnetic force and torque on movers, armatures, plungers, rotors, and magnets.

• Coils and inductance: Inductance, flux linkage, and L-matrices for coils, windings, solenoids, and inductors.

• Magnetic shielding and leakage: Field levels inside shields and leakage fields around enclosures and sensitive regions.

• Parametric studies: Geometry, current, and material sweeps to study their effect on flux, force, and inductance.

 Applications and Devices for Magnetostatic Analysis

Typical use cases:

• Motors, generators, actuators, solenoids – flux distribution, saturation, force and torque vs current and position.

• Transformers and inductors – core flux, leakage flux, saturation regions, magnetizing current at DC / bias points.

• Permanent-magnet devices – PM motors, magnetic gears, couplers, latches; field, force, torque, and cogging torque.

• Magnetic bearings and levitation – lift force, stiffness, and stability vs air gap and current.

• Linear & Rotational actuators– field, force and torque produced by actuators.

• Magnetic brakes and clutches – braking/transfer torque vs current, speed-independent torque capability.

• Magnetic gears: – field and force on magnetic gears

• Magnetic sensors – field at Hall/AMR/GMR elements in position, speed, or current sensors.

Results of EMWORKS Magnetostatic Analysis

For each study, the Magnetostatic module can report:

• Magnetic field H, Magnetic flux density B, Current density J, Force density, Inductance matrix, Flux linkage, Induced voltage / back EMF, Resistance, Force, Torque, Stored magnetic energy

In coupled magneto-thermal analysis:

• Temperature, Temperature gradient, Heat flux