Maxwell 3D: magnet segmentation

This example shows how you can use PyAEDT to segment magnets of an electric motor. The method is valid and usable for any object the user would like to segment.

Perform required imports

Perform required imports.

from pyaedt import downloads
from pyaedt import Maxwell3d

import tempfile

Set AEDT version

Set AEDT version.

aedt_version = "2024.1"

Create temporary directory

Create temporary directory.

temp_dir = tempfile.TemporaryDirectory(suffix=".ansys")

Set non-graphical mode

Set non-graphical mode. You can set non_graphical either to True or False.

non_graphical = False

Download .aedt file example

Set local temporary folder to export the .aedt file to.

aedt_file = downloads.download_file("object_segmentation", "Motor3D_obj_segments.aedt", temp_dir.name)

Launch Maxwell 3D

Launch Maxwell 3D.

m3d = Maxwell3d(projectname=aedt_file,
                specified_version=aedt_version,
                new_desktop_session=True,
                non_graphical=non_graphical)

C:\actions-runner\_work\_tool\Python\3.10.9\x64\lib\subprocess.py:1072: ResourceWarning: subprocess 4364 is still running
  _warn("subprocess %s is still running" % self.pid,
C:\actions-runner\_work\pyaedt\pyaedt\testenv\lib\site-packages\pyaedt\generic\settings.py:383: ResourceWarning: unclosed file <_io.TextIOWrapper name='D:\\Temp\\pyaedt_ansys.log' mode='a' encoding='cp1252'>
  self._logger = val

Create object to access 3D modeler

Create the object mod3D to access the 3D modeler easily.

modeler = m3d.modeler

Segment first magnet by specifying the number of segments

Select first magnet to segment by specifying the number of segments. The method accepts in input either the list of magnets names to segment or magnets ids or the magnet object pyaedt.modeler.cad.object3d.Object3d. apply_mesh_sheets is enabled which means that the mesh sheets will be applied in the geometry too. In this specific case we give as input the name of the magnet.

segments_number = 5
object_name = "PM_I1"
sheets_1 = modeler.objects_segmentation(object_name, segments_number=segments_number, apply_mesh_sheets=True)

Segment second magnet by specifying the number of segments

Select second magnet to segment by specifying the number of segments. In this specific case we give as input the id of the magnet.

segments_number = 4
object_name = "PM_I1_1"
magnet_id = [obj.id for obj in modeler.object_list if obj.name == object_name][0]
sheets_2 = modeler.objects_segmentation(magnet_id, segments_number=segments_number, apply_mesh_sheets=True)

Segment third magnet by specifying the segmentation thickness

Select third magnet to segment by specifying the segmentation thickness. In this specific case we give as input the magnet object of type pyaedt.modeler.cad.object3d.Object3d.

segmentation_thickness = 1
object_name = "PM_O1"
magnet = [obj for obj in modeler.object_list if obj.name == object_name][0]
sheets_3 = modeler.objects_segmentation(magnet, segmentation_thickness=segmentation_thickness, apply_mesh_sheets=True)

Segment fourth magnet by specifying the number of segments

Select fourth magnet to segment by specifying the number of segments. In this specific case we give as input the name of the magnet and we disable the mesh sheets.

object_name = "PM_O1_1"
segments_number = 10
sheets_4 = modeler.objects_segmentation(object_name, segments_number=segments_number)

Save project and close AEDT

Save the project and close AEDT.

m3d.save_project()
m3d.release_desktop()
temp_dir.cleanup()