FEM ConstraintSelfWeight
FEM ConstraintSelfWeight |
Menu location |
---|
FEM → Constraint self weight |
Workbenches |
FEM |
Default shortcut |
C,W |
Introduced in version |
- |
See also |
FEM tutorial |
Description
Constraint self weight defines gravity acceleration 9,81 m/s^2 acting on the whole model in the prescribed direction.
How to use
- Click on or choose FEM → Constraint self weight from the top menu or press C then W keys.
- You can modify the direction of gravitation by changing its vector coordinates in the property bar of newly created ConstraintSelfWeight object.
Scripting
- new object
import ObjectsFem
ObjectsFem.makeConstraintSelfWeight( name )
- add object to the analysis
App.ActiveDocument.Analysis.Member = App.ActiveDocument.Analysis.Member + [ (object) ]
Example:
import ObjectsFem
selfweight_obj = ObjectsFem.makeConstraintSelfWeight( 'MySelfWeightObject' )
App.ActiveDocument.Analysis.Member = App.ActiveDocument.Analysis.Member + [selfweight_obj]
Solver specific informations
CalculiX
Limitations
- You need to modify .inp file to edit gravity acceleration.
- Self weight is applied to the element set Eall means to the whole model.
Editing CalculiX input file
Acceleration constant can be edited by hand modification after generating CalculiX input file.
Example of lines in .inp file:
*DLOAD
Eall,GRAV,9810,0.0,0.0,-1.0
where 9810 is gravity acceleration in [mm/s^2]
Z88
- not implemented in Z88 solver (March 2017)