
You can select different section types.
For each Type option, you have to click the Component
Edition icon
in the 1D Property dialog box to define the parameters of the section.
Type: lets you
choose the type of section (and symbol) and define the parameters.
Cylindrical beam: 


Tubular beam: 
 Outside Radius: Ro
 Inside Radius: Ri


Rectangular beam: 
 Length (Y): L
 Height (Z): H


Thin Box beam: 
 Exterior Length (Y): Le
 Exterior Height (Z): He
 Interior Length (Y): Li
 Interior Height (Z): Hi


Thin Ubeam: 
 Global Length (Y): L
 Global Height (Z): H
 Global Thickness: T


Thin Ibeam: 
 Global Length (Y): L
 Associated Thickness: Tl
 Global Height (Z): H
 Associated Thickness: Th


Thin Tbeam: 
 Global Length (Y): L
 Associated Thickness: Tl
 Global Height (Z): H
 Associated Thickness: Th


Thin Xbeam: 
 Global Length (Y): L
 Associated Thickness: Tl
 Global Height (Z): H
 Associated Thickness: Th


Userdefined beam: 
 Crosssectional Area (A)
 Ixx
 Iyy
 Izz
 Shear center (Y)
 Shear center (Z)
 Shear Factor (XY)
 Shear Factor (XZ)

Any section 
Beam
from surface: 
 Arbitrary section
 Compute and display
 Crosssectional Area (A)
 Ixx
 Iyy
 Izz
 Shear center (Y)
 Shear center (Z)
 Shear Factor (XY)
 Shear Factor (XZ)

Any surface section* 
Bar: 

Any section which works in traction/strain* 
Variable beam: 
 Start:
 Crosssectional Area (A)
 Ixx
 Iyy
 Izz
 Shear Factor (XY)
 Shear Factor (XZ)
 End:
 Crosssectional Area (A)
 Ixx
 Iyy
 Izz
 Shear Factor (XY)
 Shear Factor (XZ)

Any section at each extremities
(at each extremities, the center of gravity and the shear center must
be coincident) 
Where :
 Ixx, Iyy and Izz are the three
components of the inertia matrix of the beam, expressed in the principal
axis of the beam (axis in which the matrix is diagonal):
 Ixx is the torsion coefficient.
 Iyy is the area moment of inertia in the XZplane.
 Izz is the area moment of inertia in the XYplane.
 Shear center (Y): is the ycoordinate of the shear center
in the section axis, centered at the center of gravity of the section.
 Shear center (Z): is the zcoordinate of the shear center
in the section axis, centered at the center of gravity of the section.
 Shear Factor (XY): is the ratio between the
crosssectional area (A) and the shear area (A_{y}),
area section which works in shearing in the XYplane (case of
a short beam). As defined, this ratio should be superior to one.
Shear Factor (XY) = A / A_{y}
As defined, this ratio should be superior to one.
 Shear Factor (XZ): is the ratio between the
crosssectional area (A) and the shear area (A_{z}),
area section which works in shearing in the XZplane (case of
a short beam).
Shear Factor (XZ) = A / A_{z}
As defined, this ratio should be superior to one.

*:

