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!SECTION

Definition of a section

1st line

!SECTION, TYPE=<type>, EGRP=<egrp> [, optional parameter]
Parameter
TYPE Section type (required)
EGRP Element group name (required)
MATERIAL User-defined material name (required)
SECOPT Auxiliary parameter for the element type (optional; defaults to 0 if omitted)
INPUT External file name (optional)
Parameter Name Parameter Value Description
TYPE SOLID Rod, triangular, quadrilateral, tetrahedral, prism, and hexahedral elements
SHELL Shell element
BEAM Beam element
INTERFACE Interface element
EGRP <egrp> Element group name
MATERIAL <material > User-defined material name
SECOPT <secopt> = 0: unspecified, plane stress
= 1: plane strain
= 2: axisymmetric
=10: 0 + reduced-order integration
=11: 1 + reduced-order integration
=12: 2 + reduced-order integration
INPUT <filename> External file name (optional); may also be used together with the 2nd and subsequent lines

2nd and subsequent lines

For 【TYPE=SOLID】

(2nd line) `THICKNESS`
Parameter Name Attribute Description
THICKNESS R Cross-sectional area for a truss element (required)

For TYPE=SOLID, THICKNESS may be omitted.

For 【TYPE=SHELL】

(2nd line) THICKNESS, INTEGPOINTS
Parameter Name Attribute Description
THICKNESS R Shell-section thickness
INTEGPOINTS I Integration points through the shell-section thickness

For 【TYPE=BEAM】

(2nd line) vx,vy,vz,area,Iyy,Iz,Jx
Parameter Name Attribute Description
vx,vy,vz R Reference-axis direction
area R Cross-sectional area
Iyy, Izz R Second moment of area
Jx R Torsional constant

For 【TYPE=INTERFACE】

(2nd line) THICKNESS, GAPCON, GAPRAD1, GAPRAD2
Parameter Name Attribute Description
THICKNESS R Section thickness
GAPCON R Gap heat-transfer coefficient (0 if omitted)
GAPRAD1 R Gap radiative heat-transfer coefficient 1 (0 if omitted)
GAPRAD2 R Gap radiative heat-transfer coefficient 2 (0 if omitted)

Notes

  • An error occurs if the TYPE parameter is inconsistent with the element type.
  • An error occurs if any element has no SECTION information.
  • An error occurs if section names are duplicated.

Example

!SECTION, EGRP=SOLID1, TYPE=SOLID, MATERIAL=STEEL
!SECTION, EGRP=SHELL2, TYPE=SHELL, MATERIAL=STEEL
1.0, 5