FEM: Add frequency analysis to FEM wb

Signed-off-by: Przemo Firszt <przemo@firszt.eu>

src/Mod/Fem/FemTools.py

@@ -33,13 +33,17 @@ def __init__(self, analysis=None):
         QtCore.QRunnable.__init__(self)
         QtCore.QObject.__init__(self)
 
+        self.known_analysis_types = ["static", "frequency"]
+
         if analysis:
             self.analysis = analysis
         else:
             import FemGui
             self.analysis = FemGui.getActiveAnalysis()
         if self.analysis:
             self.update_objects()
+            self.set_analysis_type()
+            self.set_eigenmode_parameters()
             self.base_name = ""
             self.results_present = False
             self.setup_working_dir()
@@ -119,14 +123,17 @@ def check_prerequisites(self):
         message = ""
         if not self.analysis:
             message += "No active Analysis\n"
+        if self.analysis_type not in self.known_analysis_types:
+            message += "Unknown analysis type: {}\n".format(self.analysis_type)
         if not self.mesh:
             message += "No mesh object in the Analysis\n"
         if not self.material:
             message += "No material object in the Analysis\n"
         if not self.fixed_constraints:
             message += "No fixed-constraint nodes defined in the Analysis\n"
-        if not (self.force_constraints or self.pressure_constraints):
-            message += "No force-constraint or pressure-constraint defined in the Analysis\n"
+        if self.analysis_type == "static":
+            if not (self.force_constraints or self.pressure_constraints):
+                message += "No force-constraint or pressure-constraint defined in the Analysis\n"
         return message
 
     def write_inp_file(self):
@@ -136,7 +143,8 @@ def write_inp_file(self):
         try:
             inp_writer = iw.inp_writer(self.analysis, self.mesh, self.material,
                                        self.fixed_constraints, self.force_constraints,
-                                       self.pressure_constraints, self.working_dir)
+                                       self.pressure_constraints, self.analysis_type,
+                                       self.eigenmode_parameters, self.working_dir)
             self.base_name = inp_writer.write_calculix_input_file()
         except:
             print "Unexpected error when writing CalculiX input file:", sys.exc_info()[0]
@@ -165,6 +173,26 @@ def start_ccx(self):
             return p.returncode
         return -1
 
+    ## sets eigenmode parameters for CalculiX frequency analysis
+    #  @param self The python object self
+    #  @param number number of eigenmodes that wll be calculated, default 10
+    #  @param limit_low lower value of requested eigenfrequency range, default 0.0
+    #  @param limit_high higher value of requested eigenfrequency range, default 1000000.0
+    def set_eigenmode_parameters(self, number=10, limit_low=0.0, limit_high=1000000.0):
+        self.eigenmode_parameters = (number, limit_low, limit_high)
+
+    def set_base_name(self, base_name=None):
+        if base_name is None:
+            self.base_name = ""
+        else:
+            self.base_name = base_name
+
+    def set_analysis_type(self, analysis_type=None):
+        if analysis_type is None:
+            self.analysis_type = "static"
+        else:
+            self.analysis_type = analysis_type
+
     def setup_working_dir(self, working_dir=None):
         if working_dir is None:
             self.fem_prefs = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Fem")

src/Mod/Fem/Gui/Resources/Fem.qrc

@@ -17,6 +17,7 @@
         <file>icons/fem-new-analysis.svg</file>
         <file>icons/fem-purge-results.svg</file>
         <file>icons/fem-quick-analysis.svg</file>
+        <file>icons/fem-frequency-analysis.svg</file>
         <file>icons/fem-result.svg</file>
         <file>icons/preferences-fem.svg</file>
         <file>translations/Fem_af.qm</file>