B(H) curve of a material: about


The user has the possibility to visualize the magnetic properties (curve B(H)) of a material corresponding to the defined model.

This is translated in Flux by a new type of entity named: 2D curve (Material)

If the user wishes to visualize a B(H) curve he must create this curve by using the command New 2D curve (Material) B(H).

This command is available before or after resolving. It is necessary that the application be defined to activate the command.

Command access

The command New 2D curve (Material) B(H) is accessible by various ways*:

  • from the menu Curve by pointing on 2D curve (Material)
  • from the menu Physics by pointing on Material

* It is also possible to access the command New 2D curve (Material) B(H) by the contextual menus starting from the data tree by the node Material in Physics or by the node 2D curve (Material) in Post processing

2D curve (Material): structure

The structure of a 2D curve (Material) is standard; it is independent of the material model. It is defined by:

  • Minimal limit of H (A/m) and maximal limit of H (A/m) to define the displayed interval of the curve B(H)
  • Temperatures (in °C) for which the user wishes to visualize the B(H) curves (only for the models with material properties depending on the temperature)

The field «Temperature»

Here are the operation modes of the field temperature:

Material property depending on T Active field

Field not filled

4 temperatures are taken by default (0°C, 20°C, 50°C and 100°C)

4 curves B(H) corresponding to each of the temperatures respectively are displayed

Field filled

The B(H) curves of each temperature decided by the user are displayed

Material property independent of T Inactive field No taking into consideration of this field


As with all curves (2D or 3D) in Flux, it is impossible to modify a 2D curve (material) (except for the name and comment).