Bus Station#
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In this example we will demonstrate:
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from math import inf
from dlubal.api import rfem
from dlubal.api import common
# Connect to the RFEM application
with rfem.Application() as rfem_app:
# Create new empty model
rfem_app.create_model(name="bus_station")
# Cleanup the model
rfem_app.delete_all_objects()
# List of model objects to be created
lst = [
# Structure
rfem.structure_core.Material(
no=1,
name="S235 | EN 1993-1-1:2005-05",
),
rfem.structure_core.Material(
no=2,
name="C12/15 | EN 1992-1-1:2004/A1:2014",
),
# Section
rfem.structure_core.Section(
no=1,
material=1,
name="IPE 240 | -- | British Steel",
shear_stiffness_deactivated=True,
),
rfem.structure_core.Section(
no=2, material=1, name="IPE 180 | -- | British Steel"
),
# Thickness
rfem.structure_core.Thickness(
no=1, material=2, uniform_thickness=0.12, assigned_to_surfaces=[1, 2, 3, 4]
),
# Nodes
rfem.structure_core.Node(no=1, coordinate_1=0, coordinate_2=0, coordinate_3=-4),
rfem.structure_core.Node(
no=2, coordinate_1=9.5, coordinate_2=0, coordinate_3=-4
),
rfem.structure_core.Node(
no=3, coordinate_1=9.5, coordinate_2=6, coordinate_3=-4
),
rfem.structure_core.Node(
no=4,
coordinate_1=0,
coordinate_2=6,
coordinate_3=-4,
),
rfem.structure_core.Node(
no=6,
coordinate_1=5,
coordinate_2=2,
coordinate_3=-4,
),
rfem.structure_core.Node(
no=7,
coordinate_1=7,
coordinate_2=2,
coordinate_3=-4,
),
rfem.structure_core.Node(
no=8,
coordinate_1=7,
coordinate_2=4,
coordinate_3=-4,
),
rfem.structure_core.Node(
no=9,
coordinate_1=5,
coordinate_2=4,
coordinate_3=-4,
),
rfem.structure_core.Node(
no=10,
coordinate_1=0,
coordinate_2=6,
coordinate_3=0,
),
rfem.structure_core.Node(
no=11,
coordinate_1=0,
coordinate_2=0,
coordinate_3=0,
),
rfem.structure_core.Node(
no=12,
coordinate_1=6,
coordinate_2=6,
coordinate_3=-4,
),
rfem.structure_core.Node(
no=13,
coordinate_1=9.5,
coordinate_2=0,
coordinate_3=0,
),
rfem.structure_core.Node(
no=14,
coordinate_1=9.5,
coordinate_2=6,
coordinate_3=0,
),
rfem.structure_core.Node(
no=16,
coordinate_1=6,
coordinate_2=6,
coordinate_3=0,
),
rfem.structure_core.Node(
no=17,
coordinate_1=0,
coordinate_2=5,
coordinate_3=-3,
),
rfem.structure_core.Node(
no=18,
coordinate_1=0,
coordinate_2=3,
coordinate_3=-3.52,
),
rfem.structure_core.Node(
no=19,
coordinate_1=0,
coordinate_2=1,
coordinate_3=-3,
),
rfem.structure_core.Node(
no=20,
coordinate_1=0,
coordinate_2=5.456,
coordinate_3=0,
),
rfem.structure_core.Node(
no=21,
coordinate_1=0,
coordinate_2=0.588,
coordinate_3=0,
),
# Lines
rfem.structure_core.Line(
no=1,
definition_nodes=[1, 2],
),
rfem.structure_core.Line(
no=2,
definition_nodes=[11, 13],
),
rfem.structure_core.Line(
no=3,
definition_nodes=[12, 3],
),
rfem.structure_core.Line(
no=4,
definition_nodes=[4, 1],
),
rfem.structure_core.Line(
no=5,
definition_nodes=[17, 20],
),
rfem.structure_core.Line(
no=6,
definition_nodes=[2, 3],
),
rfem.structure_core.Line(
no=7,
definition_nodes=[6, 7],
),
rfem.structure_core.Line(
no=8,
definition_nodes=[7, 8],
),
rfem.structure_core.Line(
no=9,
definition_nodes=[8, 9],
),
rfem.structure_core.Line(
no=10,
definition_nodes=[9, 6],
),
rfem.structure_core.Line(
no=11,
definition_nodes=[4, 10],
),
rfem.structure_core.Line(
no=12,
definition_nodes=[10, 20],
),
rfem.structure_core.Line(
no=13,
definition_nodes=[11, 1],
),
rfem.structure_core.Line(
no=14,
definition_nodes=[2, 13],
),
rfem.structure_core.Line(
no=15,
type=rfem.structure_core.Line.TYPE_ARC,
arc_first_node=17,
arc_second_node=19,
arc_control_point=common.Vector3d(x=0, y=3, z=-3.52),
),
rfem.structure_core.Line(
no=16,
definition_nodes=[13, 14],
),
rfem.structure_core.Line(
no=17,
definition_nodes=[3, 14],
),
rfem.structure_core.Line(
no=18,
definition_nodes=[4, 12],
),
rfem.structure_core.Line(
no=19,
definition_nodes=[12, 16],
),
rfem.structure_core.Line(
no=21,
definition_nodes=[20, 21],
),
rfem.structure_core.Line(
no=22,
definition_nodes=[21, 11],
),
rfem.structure_core.Line(
no=23,
definition_nodes=[21, 19],
),
# Members
rfem.structure_core.Member(
no=1,
line=18,
section_start=1,
),
rfem.structure_core.Member(
no=2,
line=3,
section_start=1,
),
rfem.structure_core.Member(
no=3,
line=19,
section_start=2,
),
# Surfaces
rfem.structure_core.Surface(
no=1,
boundary_lines=[4, 13, 22, 21, 12, 11],
grid_origin=common.Vector3d(x=0, y=6, z=-4),
),
rfem.structure_core.Surface(
no=2,
boundary_lines=[6, 14, 16, 17],
grid_origin=common.Vector3d(x=9.5, y=0, z=-4),
),
rfem.structure_core.Surface(
no=3,
boundary_lines=[2, 14, 1, 13],
grid_origin=common.Vector3d(x=0, y=0, z=0),
),
rfem.structure_core.Surface(
no=4,
boundary_lines=[1, 6, 3, 18, 4],
grid_origin=common.Vector3d(x=0, y=0, z=-4),
),
# Openings
rfem.structure_core.Opening(
no=1,
boundary_lines=[5, 15, 23, 21],
),
rfem.structure_core.Opening(
no=5,
boundary_lines=[7, 8, 9, 10],
),
# Nodal Support
rfem.types_for_nodes.NodalSupport(
no=1,
nodes=[16],
spring=common.Vector3d(x=inf, y=inf, z=inf),
rotational_restraint=common.Vector3d(x=0, y=0, z=inf),
),
# Line Support
rfem.types_for_lines.LineSupport(
no=1,
lines=[2, 12, 16, 22],
spring=common.Vector3d(x=inf, y=inf, z=inf),
rotational_restraint=common.Vector3d(x=0, y=0, z=inf),
),
# Member Eccentricity
rfem.types_for_members.MemberEccentricity(
no=1,
name="Relative and Absolute | Middle - Top | Local xyz",
specification_type=rfem.types_for_members.MemberEccentricity.SPECIFICATION_TYPE_RELATIVE_AND_ABSOLUTE,
vertical_section_alignment=rfem.types_for_members.MemberEccentricity.VERTICAL_SECTION_ALIGNMENT_TOP,
),
# Member Hinge
rfem.types_for_lines.LineMeshRefinement(
no=1,
type=rfem.types_for_lines.LineMeshRefinement.TYPE_LENGTH,
target_length=0.1,
number_of_layers=2,
),
# Surface Mesh Refinement
rfem.types_for_surfaces.SurfaceMeshRefinement(
no=1,
surfaces=[3],
target_length=0.8,
),
# Solid Mesh Refinement
rfem.types_for_solids.SolidMeshRefinement(
no=1,
target_length=0.01,
),
# Load Cases
rfem.loading.LoadCase(
no=1,
name="Self weight",
static_analysis_settings=1,
),
rfem.loading.LoadCase(
no=2,
name="Live load",
static_analysis_settings=2,
action_category=rfem.loading.LoadCase.ACTION_CATEGORY_IMPOSED_LOADS_CATEGORY_H_ROOFS_QI_H,
),
# Nodal Load
rfem.loads.NodalLoad(
no=1,
load_case=2,
load_type=rfem.loads.NodalLoad.LOAD_TYPE_COMPONENTS,
nodes=[12],
components_force_x=1000,
components_force_y=2000,
components_force_z=3000,
),
# Line Load
rfem.loads.LineLoad(
no=1,
load_case=2,
lines=[15],
magnitude=1250.0,
load_type=rfem.loads.LineLoad.LOAD_TYPE_FORCE,
load_distribution=rfem.loads.LineLoad.LOAD_DISTRIBUTION_UNIFORM,
load_direction=rfem.loads.LineLoad.LOAD_DIRECTION_GLOBAL_Z_OR_USER_DEFINED_W_TRUE,
),
# Member Load
rfem.loads.MemberLoad(
no=1,
load_case=2,
members=[1, 2],
magnitude=1250,
coordinate_system='Local',
load_type=rfem.loads.MemberLoad.LOAD_TYPE_FORCE,
),
# Surface Load
rfem.loads.SurfaceLoad(
no=1,
load_case=2,
load_type=rfem.loads.SurfaceLoad.LOAD_TYPE_FORCE,
surfaces=[4],
uniform_magnitude=750,
),
# Design Situation
rfem.loading.DesignSituation(
no=1,
user_defined_name_enabled=True,
name="DS 1",
design_situation_type=rfem.loading.DesignSituation.DESIGN_SITUATION_TYPE_STR_PERMANENT_AND_TRANSIENT_6_10,
),
# Static Analysis Settings
rfem.loading.StaticAnalysisSettings(no=1),
rfem.loading.StaticAnalysisSettings(
no=2,
analysis_type=rfem.loading.StaticAnalysisSettings.ANALYSIS_TYPE_SECOND_ORDER_P_DELTA,
),
rfem.loading.StaticAnalysisSettings(
no=3,
analysis_type=rfem.loading.StaticAnalysisSettings.ANALYSIS_TYPE_LARGE_DEFORMATIONS,
number_of_load_increments=10,
),
]
# Create all objects from the list in the active model.
rfem_app.create_object_list(lst)
# Calculate all
rfem_app.calculate_all(skip_warnings=True)