Magnetic material models^*

There are several ways to describe nonlinear magnetic material properties. In QuickField the non-linear materials are represented by normal magnetization curve B(H). The implemented model does not allow specifying the hysteresis curve. Supported analyses types: DC, AC and Transient magnetics.

You can specify the magnetization (coercive force) to simulate the permanent magnets. The curve will be shifted to the left by the value of coercive force. Thus at zero outer field strength you will have some field intensity value.

There are some restrictions applied to magnetization curve.

1. The dependence should be unique. For each arbitrary H value the specific B value should correspond. And vise versa.
2. The saturated material permeability should be greater then 1.

It is essential to meet these requirements. In other case the model may produce incorrect results, or the calculations could not be performed at all.

• More about magnetic material models simulation and design:
  Coil with ferromagnetic core
  Nonlinear ferromagnetic core in sinusoidal magnetic field
  Cylindrical magnetic device.
• Magnetic material models simulation and design in the recorded webinar:
  QuickField 5.8 expands functionality for magnetic field analysis.

^*We do not guarantee that articles in the section "Glossary" are full and exact, and may be used as a reference of any kind. In fact - they are not! These are just informal hints, letting the students and amateurs better understand what is the specific term about. Experts should not read it at all! However, we will appreciate all expert recommendations about improving and extending our glossary.