This function is principally related to all
nodes of the current cross-section. The total mesh is translated in the
cross-section coordinate system by a certain amount or rotated around the
center of gravity or an other reference point.
| Setting | Description |
|---|
|
Move
|
The nodes of a cross-section are moved in the
cross-section coordinate system by a certain amount. This allows for instance
in an in-symmetric cross-section to move the origin of the coordinate system
into the center of gravity without any rotation. All node coordinates are
modified accordingly.
- Z-off:Translation distance for all
nodes in Z-direction
- Y-off:Translation distance for all
nodes in Y-direction
- Variant: Cross-section variant for getting the
default values for Z-off and Y-off.
|
|
Rotate
|
The FE mesh is rotated in the cross-section
coordinate system. The rotation is performed around the point with the
coordinates Z-off and Y-off. A rotation around the reference point of the
cross-section is in general required; this reference point is the point where
the node of the structural model is arranged if no additional eccentricity
vector is defined. The coordinates of this point are therefore specified as
default when the switch for rotation is selected.
- Z-off: Z-coordinate of the rotation center in
the cross-section coordinate system
- Y-off: Y-coordinate of the rotation center in
the cross-section coordinate system
- Beta: Rotation angle clockwise. When
un-symmetric cross-sections are defined it is in most cases desired that the
directions of the principal axes of inertia show in the directions of the
cross-section coordinate system. Therefore the deviation angle of the principal
axes from the cross-section axes is specified as default value. If this default
setting is applied, the cross-section will be rotated such that its principal
axes of inertia are also its reference axes and moments of inertia are
correctly calculated in relation to the principal axes.
- Option "Update element beta": If the
cross-section is rotated in the cross-section coordinate system it will be
normally arranged in the model with its rotated shape (its reference axes
define the local element coordinate system). In reality the un-symmetric
cross-section is usually not arranged in this rotated form (1st principal axis
vertical). Therefore this rotation must be reversed in the structural model to
the original arrangement. I.e. a respective beta angle of the affected
structural elements must be defined. If the option "Update element beta" is
set, the program keeps the cross-section rotation resident and automatically
defines the respective beta angle of the structural elements.
- Variant: Cross-section variant for getting the
default values for Z-off,Y-off and beta. (due to different material assignment
to composite elements the same cross-section may have different positions of
the center of gravity and different principal axis directions)
|
| Modify Element Beta
|
Initialize: The element beta angle value
will be initialized by the CS beta angle value.
Update: The current CS beta angle value will
be added to the element beta angle previously defined in the elements table.
|
Click
OK if the input shall be stored or
Cancel if the function should be left without
action.
