FEM: do not write empty constraints to ccx input file

FreeCAD · Jul 21, 2016 · ae9bc22 · ae9bc22
1 parent 513bb65
commit ae9bc22
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Showing 3 changed files with 14 additions and 25 deletions.
diff --git a/src/Mod/Fem/FemInputWriterCcx.py b/src/Mod/Fem/FemInputWriterCcx.py
@@ -63,17 +63,24 @@ def write_calculix_input_file(self):
         inpfile = open(self.file_name, 'a')
         inpfile.write('\n\n')
         self.write_element_sets_material_and_femelement_type(inpfile)
-        self.write_node_sets_constraints_fixed(inpfile)
-        self.write_node_sets_constraints_displacement(inpfile)
+        if self.fixed_objects:
+            self.write_node_sets_constraints_fixed(inpfile)
+        if self.displacement_objects:
+            self.write_node_sets_constraints_displacement(inpfile)
         self.write_materials(inpfile)
         self.write_femelementsets(inpfile)
         self.write_step_begin(inpfile)
-        self.write_constraints_fixed(inpfile)
-        self.write_constraints_displacement(inpfile)
+        if self.fixed_objects:
+            self.write_constraints_fixed(inpfile)
+        if self.displacement_objects:
+            self.write_constraints_displacement(inpfile)
         if self.analysis_type is None or self.analysis_type == "static":
-            self.write_constraints_selfweight(inpfile)
-            self.write_constraints_force(inpfile)
-            self.write_constraints_pressure(inpfile)
+            if self.selfweight_objects:
+                self.write_constraints_selfweight(inpfile)
+            if self.force_objects:
+                self.write_constraints_force(inpfile)
+            if self.pressure_objects:
+                self.write_constraints_pressure(inpfile)
         elif self.analysis_type == "frequency":
             self.write_frequency(inpfile)
         self.write_outputs_types(inpfile)

diff --git a/src/Mod/Fem/test_files/ccx/cube_frequency.inp b/src/Mod/Fem/test_files/ccx/cube_frequency.inp
@@ -464,10 +464,6 @@ Eall
 68,
 69,
 
-***********************************************************
-** Node sets for prescribed displacement constraint
-** written by write_node_sets_constraints_displacement function
-
 ***********************************************************
 ** Materials
 ** written by write_materials function
@@ -500,11 +496,6 @@ FemConstraintFixed,2
 FemConstraintFixed,3
 
 
-***********************************************************
-** Displacement constraint applied
-** written by write_constraints_displacement function
-
-
 ***********************************************************
 ** Frequency analysis
 ** written by write_frequency function

diff --git a/src/Mod/Fem/test_files/ccx/cube_static.inp b/src/Mod/Fem/test_files/ccx/cube_static.inp
@@ -464,10 +464,6 @@ Eall
 68,
 69,
 
-***********************************************************
-** Node sets for prescribed displacement constraint
-** written by write_node_sets_constraints_displacement function
-
 ***********************************************************
 ** Materials
 ** written by write_materials function
@@ -500,11 +496,6 @@ FemConstraintFixed,2
 FemConstraintFixed,3
 
 
-***********************************************************
-** Displacement constraint applied
-** written by write_constraints_displacement function
-
-
 ***********************************************************
 ** Node loads
 ** written by write_constraints_force function