Tools for the creation of a magnetic property B(H): analytical models

Introduction

This section presents the creation of the magnetic property B(H) in the case of analytical models.

The main information refers to:

  • the tools for external data importing
  • the operating mode for the creation of a magnetic property B(H) in the case of an analytical model

Importing of external data: interest

To facilitate the description of the characteristic B(H), the user can load the external data B(H) (data on constructor, experimental measurements, …). These data are stored in the application, and can be displayed in the zone dedicated to curves.

The external data are useful for:

  • adjusting the values of the analytical models parameters
  • constructing the curve in the case of a numerical model (standard spline and smoothed spline)

Type of importing

The importing of external data assume two types, as presented in the table below:

Importing … Description

via file
  • file .txt: the text fields are separated by tabulations
  • file .CSV: the text fields are separated by semi-colons
via copy/paste Pasting of data originating from a clipboard (data copied in an excel file, …)

The format of the data corresponds to two columns of values. The majority of the classical separators are dealt with (point, comma, space…).

Creating the B(H) / analytical model

To create a magnetic property B(H) with an analytical model, observe the following operating mode:

Stage Action
1

In the my_base material base

  • open the desired material my_mater
2

In the tab B(H)

  • click on Create magnetic properties
3

In the model zone

  • sort out the models by means of the proposed filters ⇒
  • choose the desired model
4

In the model zone

  • enter the values of the model parameters (relative permeability, magnetization to saturation, …)
5

In the tab B(H)

  • click on External data

  • enter the pair of values B,H
6 Re-adjust the parameters of the model by means of the graphic view if necessary