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Connector Elasticity to define rotational stiffness

Writer's picture: Philip DaiPhilip Dai

**

*Node

1, 0., 19121.25, 0.

*Element, type=CONN3D2

1, 1, Beam_CS-1.1

*Connector Section, elset=Wire-1-Set-1, behavior=ConnSect-2_RotStiffness

Hinge,

"Datum csys-2",

*Nset, nset=Bottom, instance=Beam_CS-1

193,

*Nset, nset=RP

1,

*Nset, nset=Wire-1-Set-1

1,

*Elset, elset=Wire-1-Set-1

1,

*Orientation, name="Datum csys-2"

0., 0., 1., 0., 1., 0.

1, 0.

**************

*Connector Behavior, name=ConnSect-2_RotStiffness

*Connector Elasticity, component=4

6e+10,


The stiffness is defined as below:

6.00E+10

Nmm/radians

1.05E+09

Nmm/deg

1047.198

kNm/deg





Orientation systems




Data lines to define an orientation using DEFINITION=COORDINATES: 

First line:

  1. X-coordinate of point a.

  2. Y-coordinate of point a.

  3. Z-coordinate of point a.

  4. X-coordinate of point b.

  5. Y-coordinate of point b.

  6. Z-coordinate of point b.

  7. The following items, the coordinates of point c (the origin), are optional and relevant only for SYSTEM=RECTANGULAR and SYSTEM=Z RECTANGULAR. The default location of the origin, c, is the global origin.

  8. X-coordinate of point c.

  9. Y-coordinate of point c.

  10. Z-coordinate of point c.

Second line (mandatory for shells, membranes, gaskets, composite solid sections, and contact pairs):

  1. Local direction about which the additional rotation or rotations are given. The default is the local 1-direction. For shell, membrane, and cohesive elements this direction should have a nonzero component in the direction of the normal to the surface.

  2. Additional rotation (in degrees) applied to both directions orthogonal to the specified local direction. The default is zero degrees.

 
 
 

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