stem.default_materials module

class stem.default_materials.DefaultMaterial(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: Enum

Enumeration class to retrieve default soil materials to help the user in making the model.

Rail_46E3_2D = StructuralMaterial(name='default_elastic_rail_46E3_2D', material_parameters=EulerBeam(ndim=2, YOUNG_MODULUS=210000000000.0, POISSON_RATIO=0.3, DENSITY=7850, CROSS_AREA=0.005944, I33=1.606e-05, I22=None, TORSIONAL_INERTIA=None, RAYLEIGH_M=None, RAYLEIGH_K=None))
Rail_46E3_3D = StructuralMaterial(name='default_elastic_rail_46E3_3D', material_parameters=EulerBeam(ndim=3, YOUNG_MODULUS=210000000000.0, POISSON_RATIO=0.3, DENSITY=7850, CROSS_AREA=0.005944, I33=1.606e-05, I22=3.075e-06, TORSIONAL_INERTIA=1.9135e-05, RAYLEIGH_M=None, RAYLEIGH_K=None))
Rail_54E1_2D = StructuralMaterial(name='default_elastic_rail_54E1_2D', material_parameters=EulerBeam(ndim=2, YOUNG_MODULUS=210000000000.0, POISSON_RATIO=0.3, DENSITY=7850, CROSS_AREA=0.006977, I33=2.3372e-05, I22=None, TORSIONAL_INERTIA=None, RAYLEIGH_M=None, RAYLEIGH_K=None))
Rail_54E1_3D = StructuralMaterial(name='default_elastic_rail_54E1_3D', material_parameters=EulerBeam(ndim=3, YOUNG_MODULUS=210000000000.0, POISSON_RATIO=0.3, DENSITY=7850, CROSS_AREA=0.006977, I33=2.3372e-05, I22=2.787e-06, TORSIONAL_INERTIA=2.616e-05, RAYLEIGH_M=None, RAYLEIGH_K=None))
Rail_60E1_2D = StructuralMaterial(name='default_elastic_rail_60E1_2D', material_parameters=EulerBeam(ndim=2, YOUNG_MODULUS=210000000000.0, POISSON_RATIO=0.3, DENSITY=7850, CROSS_AREA=0.00767, I33=3.038e-05, I22=None, TORSIONAL_INERTIA=None, RAYLEIGH_M=None, RAYLEIGH_K=None))
Rail_60E1_3D = StructuralMaterial(name='default_elastic_rail_60E1_3D', material_parameters=EulerBeam(ndim=3, YOUNG_MODULUS=210000000000.0, POISSON_RATIO=0.3, DENSITY=7850, CROSS_AREA=0.00767, I33=3.038e-05, I22=5.123e-06, TORSIONAL_INERTIA=3.55e-05, RAYLEIGH_M=None, RAYLEIGH_K=None))
class stem.default_materials.RailTypes(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: Enum

Enumeration of rail types

rail_46E3 = 1
rail_54E1 = 2
rail_60E1 = 3
stem.default_materials.set_default_steel_rail_material(ndim: int, rail_type: RailTypes) → StructuralMaterial

Function to define the default elastic material for a steel beam of the given geometry. Currently, the most common rails adopted in the Netherlands are implemented (46E3, 54E1 and 60E1).

Args:

  • ndim (int): number of dimensions of the problem (either 2 or 3)

  • rail_type (RailTypes): instance of the enumeration to describe the rail type

Raises:

  • ValueError: if the rail type is not implemented

Returns: