refactor: use pydantic for the settings module

doc/source/changelog/1259.miscellaneous.md

@@ -0,0 +1 @@
+Use pydantic for the settings module

examples/simulator/ep-mechanics-simulator-fullheart.py

@@ -98,6 +98,9 @@
 # Load default simulation settings.
 simulator.settings.load_defaults()
 
+# Use the ReactionEikonal solver for the electrophysiology simulation.
+simulator.settings.electrophysiology.analysis.solvertype = "ReactionEikonal"
+
 ###############################################################################
 # Compute the fiber orientation
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -186,9 +189,6 @@
 #    A constant pressure is prescribed to the atria.
 #    No circulation system is coupled with the atria.
 
-# Use the ReactionEikonal solver for the electrophysiology simulation.
-simulator.settings.electrophysiology.analysis.solvertype = "ReactionEikonal"
-
 # Start main simulation. The ``auto_post`` option is set to ``False`` to avoid
 # automatic postprocessing.
 simulator.simulate(auto_post=False)

examples/simulator/ep-simulator-fullheart_rodero.py

@@ -102,6 +102,8 @@
 # Load the default settings.
 simulator.settings.load_defaults()
 
+simulator.settings.electrophysiology.analysis.solvertype = "ReactionEikonal"
+
 ###############################################################################
 # Compute fiber orientation
 # ~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -145,7 +147,5 @@
 # Start the main electrophysiology simulation. This uses the previously computed fiber orientation
 # and Purkinje network to set up and run the LS-DYNA model.
 
-
 # Compute the Eikonal solution. This only computes the activation time.
-simulator.settings.electrophysiology.analysis.solvertype = "ReactionEikonal"
 simulator.simulate(folder_name="main-ep-ReactionEikonal")

src/ansys/health/heart/models.py

@@ -1696,8 +1696,10 @@ def create_stiff_ventricle_base(
         part.fiber = False
         part.active = False
         part.meca_material = stiff_material
-        # assign default EP material as for ventricles
-        part.ep_material = ep_materials.Active()
+        # Assign Active EP material.
+        part.ep_material = ep_materials.Active(
+            sigma_fiber=0.5, sigma_sheet=0.1, sigma_sheet_normal=0.1, beta=140.0, cm=0.01
+        )
 
         return part
 

src/ansys/health/heart/post/system_model_post.py

@@ -181,15 +181,15 @@ def __init__(self, dir: str):
         s = SimulationSettings()
         s.load(os.path.join(self.dir, "simulation_settings.yml"))
         l_ed_pressure = (
-            s.mechanics.boundary_conditions.end_diastolic_cavity_pressure.left_ventricle.to(
-                "kilopascal"
-            ).m
+            s.mechanics.boundary_conditions.end_diastolic_cavity_pressure.get("left_ventricle")
+            .to("kilopascal")
+            .m
         )
         if self.model_type == "BV":
             r_ed_pressure = (
-                s.mechanics.boundary_conditions.end_diastolic_cavity_pressure.right_ventricle.to(
-                    "kilopascal"
-                ).m
+                s.mechanics.boundary_conditions.end_diastolic_cavity_pressure.get("right_ventricle")
+                .to("kilopascal")
+                .m
             )
 
         # get EOD volume