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Standard Section

A nested class within Section used to create user-defined standard sections.

Some common user defined section's Shape notation is givn below:

NAME SHAPE DIMENSION VALUE
Angle "L" [H, B, tw, tf]
Channel "C" [H, B1, tw, tf1, B2, tf2, r1, r2]
H/I-Section "H" [H, B1, tw, tf1, B2, tf2, r1, r2]
T-Section "T" [H, B, tw, tf]
Box "B" [H, B, tw, tf1, C, tf2]
Pipe "P" [D, tw]
Double Angle "2L" [H, B, tw, tf, C]
Double Channel "2C" [H, B, tw, tf, C]
Solid Rectangle "SB" [H, B]
Solid Round "SR" [D]

Details of all available sections can be found here.

Constructor

Section.DBUSER(Name='', Shape='', parameters:list=[], Offset:Offset=Offset.CC(), useShear=True, use7Dof=False, id:int=0)

Creates user-defined sections with specified shape and parameters.

Parameters

  • Name: Section name
  • Shape: Section shape code ('SB', 'SR', etc.)
  • parameters: List of section parameters
  • Offset (default=Offset.CC()): Section offset parameters
  • useShear (default=True): Enable shear deformation
  • use7Dof (default=False): Enable warping (7DOF)
  • id (default=0): Section ID (auto-assigned if 0)

Object Attributes

  • ID (int): Section ID.
  • NAME (str): Section name.
  • TYPE (str): Type of section, defaults to 'DBUSER'.
  • SHAPE (str): Shape code for the section (e.g., 'SB', 'SR').
  • PARAMS (list): List of dimensional parameters defining the section's geometry.
  • OFFSET (Offset): An Offset object defining the section's offset.
  • USESHEAR (bool): Flag to indicate if shear deformation is considered (True/False).
  • USE7DOF (bool): Flag to indicate if warping effect (7th Degree of Freedom) is considered (True/False).
  • DATATYPE (int): Data type for the section, defaults to 2 for standard user-defined sections.

Examples

# Rectangular Section Example
for i in range(2):
    Node(i*10, 0, 0)
    Node.create()

Element.Beam(1, 2)
Element.create()

# Create rectangular section
Section.DBUSER("Rect_1x0.5", "SB", [1.0, 0.5])
Section.create()

# Circular Section with Custom Offset Example
for i in range(2):
    Node(i*10, 0, 0)
    Node.create()

Element.Beam(1, 2)
Element.create()

# Create circular section with center-top offset
Section.DBUSER("Circle_D1", "SR", [1.0], Offset.CT(), True, False, 5)
Section.create()