Pre-Analysis & Start-Up

Governing Equations 

Magnetic frequency response is the study of magnetic fields in devices where the magnetic field is a steady-state, sinusoidal magnetic field at a given frequency.  Magnetic frequency response is a special case of Maxwell’s equations, which form the basis of electromagnetism.  A magnetic frequency response solution includes the calculation of Eddy currents, which are loops of electric current within conductive materials induced by a changing magnetic field.

For sinusoidally varying magnetic fields, the induced Eddy currents will not completely penetrate into the interior of a conductive material. This is referred to as the skin effect, and the Eddy current penetration depth for a conductor can be calculated from the following equation

where δ is the penetration depth, f is the frequency, μ is the magnetic permeability of the material, and σ is the electrical conductivity of the material.

Start-Up

A few words on the formatting on the following instructions:

1. Notes that require you to perform an action are colored in blue

2. General information will be colored in black, but do not require any action

3. Words that are bolded are labels for items found in ANSYS AIM

4. Most important notes will be colored in red

Now that the the pre-calculations are finished, we are ready to begin the simulation in ANSYS AIM. Open ANSYS AIM by going to Start > All Apps > ANSYS 18.2 > ANSYS AIM 18.2. Once starting page has opened, select the Magnetics template as shown below.

Go to Step 2: Geometry

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