SECT

Bulk Data Entry Defines a section for force output in geometric nonlinear analysis.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
SECT SCID G0 G1 G2 GRSET ELSET I CID  
  DT                

Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
SECT 2 234 665 723 3 4      

Definitions

Field Contents SI Unit Example
SCID Section identification number.

No default (Integer > 0)

  
G0, G1, G2 Grid points defining the local axes of the section. G0 and G1 define the local x-axis while G0, G1, and G3 define the local xy-plane.

No default (Integer > 0)

  
GRSET Grid set identification number.

No default (Integer > 0)

  
ELSET Element set ID. Only sets of SOLID, SHELL, ROD, BAR, and BEAM elements can be used.

(Integer > 0)

  
IFRAME Flag for computing the center of the output coordinate system. The local system is defined by G0, G1, and G2.
0 (Default)
Origin of the local system defined by G0, G1, and G2.
1
Geometrical center of the section grid in the local system defined by G0, G1, and G2.
2
Center of gravity of the section in the local system defined by G0, G1, and G2.
3
Origin of the basic system in the local system defined by G0, G1, and G2.
10
Origin of the basic system.
11
Geometrical center of the section in the basic system.
12
Center of gravity of the section in the basic system.
13
Origin of the basic system.

(Integer)

  
CID Moving coordinate system identifier for automatic definition of a section. Only CORD1R and CORD3R can be selected. 4

Default = 0 (Integer ≥ 0)

  
DT Time step for saving the data.

Default = DTTH defined on XSOM (Real > 0)

  

Comments

  1. SECT output must be selected for time history output with XHIST. It is only available for geometric nonlinear analysis subcases which are defined by an ANALYSIS=EXPDYN Subcase Entry.
  2. Moments are computed with respect to the section center defined by the parameter IFRAME and expressed in the local section frame.
  3. Normal force is the component normal to the XY plane of the section. The tangential force is the component in the plane of the section.
  4. For CID > 0:
    • G0, G1, G2 blank - the local system of the section is built from the grid points defining the CORD1R or CORD3R.
    • The element set is created automatically from the elements intersected by the xy-plane of CID.
    • The grid set is created automatically from the grid points of the intersected elements on the positive z-axis defined by the xy-plane plane of the frame.
  5. This card is represented as an interface in HyperMesh.