- Free Python package for calculating magnetic fields of magnets, currents and moments (sources).
- Provides convenient methods to create, geometrically manipulate, group and visualize assemblies of sources.
- The magnetic fields are determined from underlying analytical solutions which results in fast computation times and requires little computation power, memory and background knowledge.
- For high performance computation (e.g. for multivariate parameter space analysis) all functions are also available in vectorized form.
The analytical solutions are only valid if there is little or no material response. This means that whenever there is a lot of demagnetization in permanent magnets or soft magnetic materials like magnetic shields or transformer cores, these computations cannot be used. Magpylib is at its best dealing with air-coils and permanent magnet assemblies (Ferrite, NdFeB, SmCo or similar materials).
Install magpylib with pip: >> pip install magpylib.
Example:
Run this simple code to calculate the magnetic field of a cylindrical magnet.
from magpylib.source.magnet import Cylinder
s = Cylinder( mag = [0,0,350], dim = [4,5])
print(s.getB([4,4,4]))
# Output: [ 5.08641867 5.08641867 -0.60532983]In this example the cylinder axis is parallel to the z-axis. The diameter and height of the magnet are 4 millimeter and 5 millimeter respectively and the magnet position (=geometric center) is in the origin. The magnetization / remanence field is homogeneous and points in z-direction with an amplitude of 350 millitesla. Finally, the magnetic field B is calculated in units of millitesla at the positition [4,4,4] millimeter.
Example:
The following code calculates the combined field of two magnets. They are geometrically manipulated, the system geometry is displayed together with the field in the xz-plane.
.. plot:: pyplots/examples/01_SimpleCollection.py :include-source:
More examples can be found in the Examples Section.
Technical details can be found in the :ref:`docu` .
.. toctree:: :glob: :maxdepth: 1 :caption: Content: _pages/*
.. toctree:: :glob: :maxdepth: 1 :caption: Library Docstrings: _autogen/magpylib _autogen/magpylib.source _autogen/magpylib.math