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PRETENS

SID

EID

SURFID

NTYP

G1/X1/
CID

G2 / X2

G3 / X3

SPNTID

1D pretensioned bolt:

3D pretensioned bolt:

Field

Contents

SID

Unique section identification number.

EID

Element identification number of a bar, beam or rod element for defining 1D pretensioned bolt.

(Integer > 0 for 1D pretensioned bolt, or blank for 3D pretensioned bolt)

SURFID

Identifier of SURF card which defines cutting section of 3D pretensioned bolt.

(Integer > 0 for 3D pretensioned bolt, or blank for 1D pretensioned bolt)

See comment 2.

NTYP

Type of determination of normal to the pretension section. See comment 3.

AUTO – automatic determination based on the configuration of the pretension section.

GRIDS – use G1, G2, G3 to define the plane of pretension – normal to this plane defines the pretension direction.

VECTOR – use the vector X1, X2, X3 to define pretension direction.

CID – use prescribed coordinate system.

Default = blank = AUTO  (AUTO, GRIDS, VECTOR, or CID).

G1, G2, G3

Three grid identifiers that define the plane where it's normal is the direction of the bolt.

Default = blank (Integer > 0). When requested, all three nodes must be specified.

X1, X2, X3

Coordinates, in basic system, of the vector that defines direction of pretension.

Default = blank (Real). The length of the vector must be non-zero.

CID

Identifier of a coordinate system that defines direction of pretension.

For rectangular system, the local x-axis defines the pretension direction.

For cylindrical and spherical systems, the local z-axis defines the pretension direction.

Default = blank (Integer > 0).

SPNTID

SPOINT that defines the DOF containing the pretension deformation and load.

Default is not to output the pretension deformation in results files.