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Representation of structural elements 'general beams' as rectangular beams (PAL #1881)

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This commit is contained in:
barate 2012-03-07 15:40:56 +00:00
parent 52489860fc
commit d50f2187f3
2 changed files with 47 additions and 25 deletions
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4
src/GEOM_PY/structelem/__init__.py
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@ -451,7 +451,9 @@ def TEST_StructuralElement():
'VECT_Y': (1.0, 0.0, 1.0)}),
('Orientation', {'MeshGroups': 'Edge_5',
'ANGL_VRIL': 45.0}),
('GeneralBeam', {'MeshGroups': 'Edge_1, Edge_7'}),
('GeneralBeam', {'MeshGroups': 'Edge_1, Edge_7',
'A': 1, 'IY1': 20, 'IY2': 40,
'IZ1': 60, 'IZ2': 30}),
('VisuPoutreCercle', {'MeshGroups': ['Edge_6'],
'R1': 30, 'R2': 20}),
('CircularBeam', {'MeshGroups': ['Edge_2', 'Edge_3'],

68
src/GEOM_PY/structelem/parts.py
View File

@ -25,6 +25,8 @@ directly in the general case. Structural elements should be created by the
class :class:`~salome.geom.structelem.StructuralElementManager`.
"""
import math
import salome
from salome.kernel.logger import Logger
@ -347,30 +349,6 @@ class Beam(StructuralElementPart):
return listMarkers
class GeneralBeam(Beam):
"""
This class defines a beam with a generic section. It is represented only
as the underlying wire. See class :class:`StructuralElementPart` for the
description of the parameters.
"""
def __init__(self, studyId, groupName, groupGeomObj, parameters,
name = Beam.DEFAULT_NAME):
Beam.__init__(self, studyId, groupName, groupGeomObj, parameters,
name)
logger.debug(repr(self))
def _buildPart(self):
"""
Create a copy of the underlying wire.
"""
edges = self._getSubShapes(1e-7)
wire = None
if len(edges) > 0:
wire = self.geom.MakeWire(edges)
return wire
class CircularBeam(Beam):
"""
This class defines a beam with a circular section. It can be full or
@ -573,6 +551,48 @@ class RectangularBeam(Beam):
return (outerRect1, innerRect1, outerRect2, innerRect2)
def getParameterInDict(nameList, parametersDict, default = None):
"""
This method finds the value of a parameter in the parameters
dictionary. The argument is a list because some parameters can have
several different names.
"""
for name in nameList:
if parametersDict.has_key(name):
return parametersDict[name]
return default
class GeneralBeam(RectangularBeam):
"""
This class defines a beam with a generic section. It is represented as a
full rectangular beam with the following parameters:
* HY1 = sqrt(12 * IZ1 / A1)
* HZ1 = sqrt(12 * IY1 / A1)
* HY2 = sqrt(12 * IZ2 / A2)
* HZ2 = sqrt(12 * IY2 / A2)
See class :class:`StructuralElementPart` for the description of the other
parameters.
"""
def __init__(self, studyId, groupName, groupGeomObj, parameters,
name = Beam.DEFAULT_NAME):
self.IY1 = getParameterInDict(["IY1", "IY"], parameters)
self.IZ1 = getParameterInDict(["IZ1", "IZ"], parameters)
self.IY2 = getParameterInDict(["IY2", "IY"], parameters)
self.IZ2 = getParameterInDict(["IZ2", "IZ"], parameters)
self.A1 = getParameterInDict(["A1", "A"], parameters)
self.A2 = getParameterInDict(["A2", "A"], parameters)
parameters["HY1"] = math.sqrt(12 * self.IZ1 / self.A1)
parameters["HZ1"] = math.sqrt(12 * self.IY1 / self.A1)
parameters["HY2"] = math.sqrt(12 * self.IZ2 / self.A2)
parameters["HZ2"] = math.sqrt(12 * self.IY2 / self.A2)
RectangularBeam.__init__(self, studyId, groupName, groupGeomObj, parameters,
name)
class StructuralElementPart2D(StructuralElementPart):
"""
This class is an "abstract" class for all 2D structural element parts. It