FEM: Start examples rework (#15786)

* FEM: Delete data/examples/FemCalculixCantilever1D.FCStd

* FEM: Delete data/examples/FemCalculixCantilever2D.FCStd

* FEM: Delete data/examples/FemCalculixCantilever3D.FCStd

* FEM: add new example combining the previous 3

* FEM: Update CMakeLists.txt

* FEM: Update femmesh2mesh.py

* FEM: Update test_information.md

* FEM: Update test_result.py

* FEM: Update MaterialEditor.py

* FEM: Delete data/examples/FEMExample.FCStd

* FEM: add new example without logo

data/examples/CMakeLists.txt

@@ -6,9 +6,7 @@ SET(Examples_Files
     PartDesignExample.FCStd
     RobotExample.FCStd
     BIMExample.FCStd
-    FemCalculixCantilever1D.FCStd
-    FemCalculixCantilever2D.FCStd
-    FemCalculixCantilever3D.FCStd
+    FEMExample.FCStd
     AssemblyExample.FCStd
 )
 

src/Mod/Fem/femmesh/femmesh2mesh.py

@@ -42,9 +42,9 @@ import Fem
 
 """
 from os.path import join
-the_file = join(FreeCAD.getResourceDir(), "examples", "FemCalculixCantilever3D.FCStd")
+the_file = join(FreeCAD.getResourceDir(), "examples", "FEMExample.FCStd")
 fc_file = FreeCAD.openDocument(the_file)
-fem_mesh = fc_file.getObject("Box_Mesh").FemMesh  # do not remove the _
+fem_mesh = fc_file.getObject("FEMMeshGmsh").FemMesh
 result = fc_file.getObject("CCX_Results")
 scale = 1  # displacement scale factor
 from femmesh import femmesh2mesh

src/Mod/Fem/femtest/app/test_result.py

@@ -59,21 +59,7 @@ class TestResult(unittest.TestCase):
 
     # ********************************************************************************************
     def get_stress_values(self):
-        # node 5 von calculix cantilver 3D example
-        # doc = FreeCAD.open(
-        #     FreeCAD.ConfigGet("AppHomePath") + "data/examples/FemCalculixCantilever3D.FCStd"
-        # )
-        # doc.Box_Mesh.FemMesh.Nodes[5]
-        # Vector (0.0, 1000.0, 0.0)
-        # res = doc.CalculiX_static_results
-        # stress = (
-        #     res.NodeStressXX[4],
-        #     res.NodeStressYY[4],
-        #     res.NodeStressZZ[4],
-        #     res.NodeStressXY[4],
-        #     res.NodeStressXZ[4],
-        #     res.NodeStressYZ[4]
-        # )
+        # stress at node 4 of CalculiX cantilever face load
         stress = (
             -4.52840e02,  # Sxx
             -1.94075e02,  # Syy
@@ -196,7 +182,7 @@ class TestResult(unittest.TestCase):
     # ********************************************************************************************
     def test_disp_abs(self):
         expected_dispabs = 87.302986
-        # x, y, z in node 4 of CalculiX cantilver face load
+        # x, y, z at node 4 of CalculiX cantilever face load
         disp_xyz = [FreeCAD.Vector(8.12900e00, 3.38889e-02, -8.69237e01)]
         from femresult.resulttools import calculate_disp_abs as dp
 

src/Mod/Fem/femtest/test_information.md

@@ -157,11 +157,7 @@ doc = ut.spine_thermomech()
 
 ```python
 app_home = FreeCAD.ConfigGet("AppHomePath")
-doc = FreeCAD.open(app_home + "data/examples/FemCalculixCantilever2D.FCStd")
-doc = FreeCAD.open(app_home + "data/examples/FemCalculixCantilever3D.FCStd")
-doc = FreeCAD.open(app_home + "data/examples/FemCalculixCantilever3D_newSolver.FCStd")
-doc = FreeCAD.open(app_home + "data/examples/Fem.FCStd")
-doc = FreeCAD.open(app_home + "data/examples/Fem2.FCStd")
+doc = FreeCAD.open(app_home + "data/examples/FEMExample.FCStd")
 ```
 
 ### Load all documents files

src/Mod/Material/MaterialEditor.py

@@ -980,7 +980,7 @@ import MaterialEditor
 MaterialEditor.openEditor()
 
 doc = FreeCAD.open(
-    FreeCAD.ConfigGet("AppHomePath") + "data/examples/FemCalculixCantilever3D.FCStd"
+    FreeCAD.ConfigGet("AppHomePath") + "data/examples/FEMExample.FCStd"
 )
 import MaterialEditor
 MaterialEditor.openEditor("SolidMaterial", "Material")