Merge pull request #16 from haiiliin/V2017-predefined-stress

Add Stress predefined field

src/abaqus/PredefinedField/PredefinedFieldModel.py

@@ -3,6 +3,7 @@
 from .InitialState import InitialState
 from .KinematicHardening import KinematicHardening
 from .MaterialAssignment import MaterialAssignment
+from .Stress import Stress
 from .Temperature import Temperature
 from .Velocity import Velocity
 from ..Assembly.PartInstanceArray import PartInstanceArray
@@ -441,3 +442,65 @@ def Velocity(
             distributionType,
         )
         return predefinedField
+
+    def Stress(
+        self,
+        name: str,
+        region: Region,
+        distributionType: SymbolicConstant = UNIFORM,
+        sigma11: float = None,
+        sigma22: float = None,
+        sigma33: float = None,
+        sigma12: float = None,
+        sigma13: float = None,
+        sigma23: float = None,
+    ):
+        """This method creates a Stress predefined field object.
+
+        Notes
+        -----
+        This function can be accessed by:
+
+        .. code-block:: python
+
+            mdb.models[name].Stress
+
+        Parameters
+        ----------
+        name
+            A String specifying the repository key.
+        region
+            A Region object specifying the region to which the predefined field is applied. Region
+            is ignored if the predefined field has *distributionType*=FROM_FILE.
+        distributionType
+            A SymbolicConstant specifying whether the load is uniform. Possible values are UNIFORM
+            and FROM_FILE. The default value is UNIFORM.
+        sigma11
+            A Float specifying the first principal component of the stress.
+        sigma22
+            A Float specifying the second principal component of the stress.
+        sigma33
+            A Float specifying the third principal component of the stress.
+        sigma12
+            A Float specifying the first shear component of the stress.
+        sigma13
+            A Float specifying the second shear component of the stress.
+        sigma23
+            A Float specifying the third shear component of the stress.
+
+        Returns
+        -------
+            A Stress object.
+        """
+        self.predefinedFields[name] = predefinedField = Stress(
+            name,
+            region,
+            distributionType,
+            sigma11,
+            sigma22,
+            sigma33,
+            sigma12,
+            sigma13,
+            sigma23,
+        )
+        return predefinedField

src/abaqus/PredefinedField/Stress.py

@@ -0,0 +1,107 @@
+from abaqusConstants import *
+from .PredefinedField import PredefinedField
+from ..Region.Region import Region
+
+
+class Stress(PredefinedField):
+    """The Stress object stores the data for an initial stress predefined field.
+    The Stress object is derived from the PredefinedField object.
+
+    Notes
+    -----
+    This object can be accessed by:
+
+    .. code-block:: python
+
+        import load
+        mdb.models[name].predefinedFields[name]
+
+    The corresponding analysis keywords are:
+
+    - INITIAL CONDITIONS
+
+    """
+
+    def __init__(
+        self,
+        name: str,
+        region: Region,
+        distributionType: SymbolicConstant = UNIFORM,
+        sigma11: float = None,
+        sigma22: float = None,
+        sigma33: float = None,
+        sigma12: float = None,
+        sigma13: float = None,
+        sigma23: float = None,
+    ):
+        """This method creates a Stress predefined field object.
+
+        Notes
+        -----
+        This function can be accessed by:
+
+        .. code-block:: python
+
+            mdb.models[name].Stress
+
+        Parameters
+        ----------
+        name
+            A String specifying the repository key.
+        region
+            A Region object specifying the region to which the predefined field is applied. Region
+            is ignored if the predefined field has *distributionType*=FROM_FILE.
+        distributionType
+            A SymbolicConstant specifying whether the load is uniform. Possible values are UNIFORM
+            and FROM_FILE. The default value is UNIFORM.
+        sigma11
+            A Float specifying the first principal component of the stress.
+        sigma22
+            A Float specifying the second principal component of the stress.
+        sigma33
+            A Float specifying the third principal component of the stress.
+        sigma12
+            A Float specifying the first shear component of the stress.
+        sigma13
+            A Float specifying the second shear component of the stress.
+        sigma23
+            A Float specifying the third shear component of the stress.
+
+        Returns
+        -------
+            A Stress object.
+        """
+        super().__init__()
+        pass
+
+    def setValues(
+        self,
+        distributionType: SymbolicConstant = UNIFORM,
+        sigma11: float = None,
+        sigma22: float = None,
+        sigma33: float = None,
+        sigma12: float = None,
+        sigma13: float = None,
+        sigma23: float = None,
+    ):
+        """This method modifies the Stress object.
+
+        Parameters
+        ----------
+        distributionType
+            A SymbolicConstant specifying whether the load is uniform. Possible values are UNIFORM
+            and FROM_FILE. The default value is UNIFORM.
+        sigma11
+            A Float specifying the first principal component of the stress.
+        sigma22
+            A Float specifying the second principal component of the stress.
+        sigma33
+            A Float specifying the third principal component of the stress.
+        sigma12
+            A Float specifying the first shear component of the stress.
+        sigma13
+            A Float specifying the second shear component of the stress.
+        sigma23
+            A Float specifying the third shear component of the stress.
+        """
+        pass