self weight

[nemesis]

Hi
is this still true?

Limitations:
•You need to modify .inp file to edit gravity acceleration.

[fandaL]

Yes.
I planned to look at it together with exploring fc gui, since it seems easy to add, but it didn't achieve to my real todo list.

[nemesis]

Yes.
I planned to look at it together with exploring fc gui, since it seems easy to add, but it didn't achieve to my real todo list.

But with this simple File:

SelfWeightTest.FCStd

(973.05 KiB) Downloaded 19 times

I have this in the Inp File :

Code: Select all

** Self weight Constraint
** written by write_constraints_selfweight function
** ConstraintSelfWeight
*DLOAD
Eall,GRAV,9810,0.0,0.0,-1.0

and that's what's written in the wiki.... so.... it looks like it's Ok or I miss something?

Code: Select all

OS: Mac OS X
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.17.10661 (Git)
Build type: Release
Branch: (detached from 3b6020c)
Hash: 3b6020cda8fb91b3de33cf812975f1bd2f29cac1
Python version: 2.7.13
Qt version: 5.6.2
Coin version: 4.0.0a
OCC version: 7.1.0

[sgrogan]

and that's what's written in the wiki.... so.... it looks like it's Ok or I miss something?

The point is that the gravity 9810 mm/sec (ie 1 G on earth) is not available in the gui. The constraint is really more general than just gravity, and can be treated as a general acceleration. The direction vector is available in the property editor but the acceleration value must edited in the .imp file.

[bernd]

and that's what's written in the wiki.... so.... it looks like it's Ok or I miss something?

The point is that the gravity 9810 mm/sec (ie 1 G on earth) is not available in the gui. The constraint is really more general than just gravity, and can be treated as a general acceleration. The direction vector is available in the property editor but the acceleration value must edited in the .imp file.

https://github.com/FreeCAD/FreeCAD/blob ... cx.py#L852