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:
| 1 | Install “MCR_R2015a_win64_installer.exe”.
This is done one time for a machine under Windows 64
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| 2 | Open “Find_Jiles_Atherton_Coefficients.exe” by a double click. The following interface appears:
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To use the application:
| 1 | Import of B-H curves measured by an experimental way
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| 2 | Fit B-measured with the B-simulated which is used in the optimization algorithm
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| 3 | Run the genetic algorithm
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| 4 | Play with parameters by hand (optional step)
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