Chapter 1: Overview of Magnetic Field Analysis

Magnetic analyses calculate the magnetic field in devices such as:

Power generatorsMagnetic tape/disk drives
TransformersWaveguides
Solenoid actuatorsResonant cavities
Electric motorsConnectors
Magnetic imaging systemsAntenna radiation
Video display device sensorsFilters
Cyclotrons 

Typical quantities of interest in a magnetic analysis are:

Magnetic flux densityPower loss
Magnetic field intensityFlux leakage
Magnetic forces and torques S-parameters
ImpedanceQuality factor
InductanceReturn loss
Eddy currentsEigenfrequencies

Magnetic fields may exist as a result of an electric current, a permanent magnet, or an applied external field.

In general, parts/components of an electromagnetic analysis can be categorized by their electric and magnetic properties. Possible electric characteristics are:

Magnetic characteristics include:

  • Non-magnetic: typically air, copper, aluminum

  • Soft magnetic: typically iron or steel

  • Hard magnetic: typically samarium cobalt or Alnico

The use and combination of these electric and material properties is described in How Mechanical APDL Handles Magnetic Analysis.