How can I identify the parameters for Jiles - Atherton model in Flux?

Yann_Le_Floch
Yann_Le_Floch
Altair Employee
edited November 2021 in Altair HyperWorks

The goal is to describe how to find Jiles-Atherton coefficients from experimental measurements in order to use it in the new hysteresis material model in Flux 12.1.

Data input

  • B-H curves measured experimentally

Data output (python file)

  • Jiles-Atherton coefficients:
  • Ms: Saturation magnetization (A/m)
  • a: Shape parameter (A/m)
  • k: Pinning coefficient (A/m)
  • c: Reversible wall motion coefficient
  • Alpha: Mean field parameter

Requirements

  • The following executable under Windows 64:
  • MCR_R2015a_win64_installer.exe
  • Find_Jiles_Atherton_Coefficients.exe

A dedicated interface has been generated under Matlab software in order to find easily JilesAtherthon coefficients from experimental B-H static cycles measured. To start the application:

1Install “MCR_R2015a_win64_installer.exe”.
This is done one time for a machine under Windows 64
2

Open “Find_Jiles_Atherton_Coefficients.exe” by a double click. The following interface appears:

image

To use the application:

1Import of B-H curves measured by an experimental way
2Fit B-measured with the B-simulated which is used in the optimization algorithm
3Run the genetic algorithm
4Play with parameters by hand (optional step)

Comments

  • Pavel2
    Pavel2 New Altair Community Member

    Hello Yann! Can you please help me locate "Find_Jiles_Atherton_Coefficients.exe"? Is it part of an Altair software distribution, or is it supplied separately? Thanks!

  • Yann_Le_Floch
    Yann_Le_Floch
    Altair Employee

    Hi Pavel,
    It is an old how to we should remove.
    Now we have a compose base tool to do this identification :
    https://help.altair.com/flux/Flux/Help/english/UserGuide/English/topics/MaterialIdentificationMain.htm

    Yann

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