FEM: examples, improve shell contact

src/Mod/Fem/femexamples/contact_shell_shell.py

@@ -30,6 +30,7 @@ import FreeCAD
 import ObjectsFem
 import Fem
 import Part
+import BOPTools.SplitFeatures
 
 mesh_name = "Mesh"  # needs to be Mesh to work with unit tests
 
@@ -55,11 +56,14 @@ def setup(doc=None, solvertype="ccxtools"):
     tube_length = 500
     sh_lower_circle = Part.Wire(Part.makeCircle(tube_radius))
     sh_lower_tube = sh_lower_circle.extrude(FreeCAD.Vector(0, 0, tube_length))
+    sh_lower_tube.reverse()
     lower_tube = doc.addObject("Part::Feature", "Lower_tube")
     lower_tube.Shape = sh_lower_tube
 
+
     sh_upper_circle = Part.Wire(Part.makeCircle(tube_radius))
     sh_upper_tube = sh_upper_circle.extrude(FreeCAD.Vector(0, 0, tube_length))
+    sh_upper_tube.reverse()
     upper_tube = doc.addObject("Part::Feature", "Upper_tube")
     upper_tube.Shape = sh_upper_tube
     upper_tube.Placement = FreeCAD.Placement(
@@ -77,6 +81,14 @@ def setup(doc=None, solvertype="ccxtools"):
         force_point.ViewObject.PointSize = 10.0
         force_point.ViewObject.PointColor = (1.0, 0.0, 0.0)
 
+
+    BooleanFrag = BOPTools.SplitFeatures.makeBooleanFragments(name= 'BooleanFragments')
+    BooleanFrag.Objects = [upper_tube, force_point]
+    
+    compound = doc.addObject("Part::Compound", "Compound")
+    compound.Links = [BooleanFrag, lower_tube,]
+       
+    
     # line for load direction
     sh_load_line = Part.makeLine(v_force_pt, FreeCAD.Vector(0, 150, 475))
     load_line = doc.addObject("Part::Feature", "Load_direction_line")
@@ -113,6 +125,7 @@ def setup(doc=None, solvertype="ccxtools"):
         solver_object.ThermoMechSteadyState = False
         solver_object.MatrixSolverType = "default"
         solver_object.IterationsControlParameterTimeUse = False
+        solver_object.SplitInputWriter = False
 
     # shell thickness
     analysis.addObject(ObjectsFem.makeElementGeometry2D(doc, 0.5, 'ShellThickness'))