Filter overlapping spheres in Mechanical

Ayush Kumar

Filter overlapping spheres in Mechanical

Ayush Kumar

For a case where say spheres are embedded in a matrix material and one needs to separate cavity face (belonging to the matrix) and sphere face, which lie on top of each other, one can use the following code.

This code compares the centroids of the spheres after rounding off to 2 digits (on milli scale) as they don't exactly match. Some adjustment will be required based on the model.

Also create a named selection all_spherical_faces manually using worksheet with all spheres in the model.

all_spherical_faces = ExtAPI.DataModel.GetObjectsByType(Ansys.ACT.Automation.Mechanical.NamedSelections)[0].Children[2].Ids
centroids = {}
for face_id in all_spherical_faces:
    value = (round(ExtAPI.DataModel.GeoData.GeoEntityById(face_id).Centroid[0] * 1000, 2),
             round(ExtAPI.DataModel.GeoData.GeoEntityById(face_id).Centroid[1] * 1000, 2),
             round(ExtAPI.DataModel.GeoData.GeoEntityById(face_id).Centroid[2] * 1000, 2))
    centroids.update({str(face_id): value})

reduced_list = centroids.copy()
face_pairs = []
for face_id, centroid in centroids.iteritems():
    reduced_list.pop(face_id)
    if centroid in reduced_list.values():
        face_pairs.append((face_id, reduced_list.keys()[reduced_list.values().index(centroid)]))

# Create Named selections
for index, face_pair in enumerate(face_pairs, start=1):
    # sphere face
    sphere = Model.AddNamedSelection()
    sphere.Name = "sphere_%s" % index
    selection = ExtAPI.SelectionManager.CreateSelectionInfo(SelectionTypeEnum.GeometryEntities)
    selection.Ids = [int(face_pair[0])]
    sphere.Location = selection
    # cavity face
    sphere = Model.AddNamedSelection()
    sphere.Name = "cavity_%s" % index
    selection = ExtAPI.SelectionManager.CreateSelectionInfo(SelectionTypeEnum.GeometryEntities)
    selection.Ids = [int(face_pair[1])]
    sphere.Location = selection