Tab ATHENA Model > Group Axis model > Axis model analysis
Menu:
Modeling > Apply > Axis model analysis
Toolbar:
ATH Apply > Axis model analysis
Command input:
ath_c3d_pos
With this function you can automatically analyze and preprocess an axis model. This preprocessing of an axis model simplifies and speeds up the attachment of profiles, glazing and infills, because the angles of the axes with respect to one another and the weather side of the construction are determined beforehand.
During preprocessing, the function converts all existing lines into ATHENA axes (null bars), forms corresponding node entries and supplements further information such as dihedral angle and weather side.
It is not mandatory to work with this function, but it is recommended, since the assignment of the axes with bar assemblies is greatly simplified.
Not every axis model can be preprocessed without problem. Cases in which axes can indiscriminately overlap cannot be unambiguously specified. Where applicable, the nodes must be set manually at such places using the command Define nodes. For the visual check after the analysis, closed fields are edged in color.
This function can be used repeatedly on already analyzed axis models in order to integrate other manually added elements.
Input request
Select objects:
You select the desired elements by single picking or pulling out a selection window. This input request is repeated until you press the Enter key to terminate the object selection.
Uncorrected surface situation
Remove surface
Select boundary object of the surface or [?]:
This message appears if an axis borders more than two surfaces. The relevant axis is highlighted in red. Select an axis which borders the uncorrected surface in order to remove it.
With the option ? you call the help.
Confirm weather side [Invert/?]:
One side of the construction is identified by red lines. Press the Enter key to accept the identified side as the weather side. With the option Invert you use the opposite side as the weather side.
In order to be able to more easily recognize the suggested weather side, you should set an isometric perspective view.
Confirm plane [Remove/All/?]:
Press the Enter key to accept the plane highlighted in green. The option Remove removes the plane from the construction. With the option All you accept all planes. This input request is repeated until all planes have been determined.
