A2plus incosistent DOF

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Ben Jammin
Posts: 23
Joined: Thu Mar 08, 2018 6:19 pm

A2plus incosistent DOF

Post by Ben Jammin »

Hi Freecad users,

I am using A2plus v0.4.46b and I noticed something which I don't understand. Here is what I did :

first I set 2 planes constraints between blue part and the green part therefore I get as expected one DOF
Sélection_394.jpg
Sélection_394.jpg (95.58 KiB) Viewed 1145 times

then I add another part which I fixed to the green part with an circular constraint (rotation unlocked) and I noticed that now, green part and blue part are fixed to each other (DOF=0).
Sélection_395.jpg
Sélection_395.jpg (97.03 KiB) Viewed 1145 times
how is that possible ?


OS: Ubuntu 16.04.6 LTS
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.4.
Build type: Release
Python version: 2.7.12
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: French/France (fr_FR)
Ben Jammin
Posts: 23
Joined: Thu Mar 08, 2018 6:19 pm

Re: A2plus incosistent DOF

Post by Ben Jammin »

was my question dumb ? did I misunderstand the A2plus workbench principle ?
dan-miel
Posts: 391
Joined: Thu Sep 13, 2018 12:29 am
Location: Spokane WA. USA

Re: A2plus incosistent DOF

Post by dan-miel »

Ben Jammin wrote: Tue Apr 21, 2020 9:41 am was my question dumb ? did I misunderstand the A2plus workbench principle ?
I'm not sure if the assembly is correct. Your tree indentation looks different than the indentations that I have in my assemblies. I'm not sure why that is. Would you post your file?
Dan Miel
Attachments
Pic for Ben.JPG
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Ben Jammin
Posts: 23
Joined: Thu Mar 08, 2018 6:19 pm

Re: A2plus incosistent DOF

Post by Ben Jammin »

You are right, the circular constraint was supposed to appear in the construction tree. I just re-opened the freecad model and even though the tree indentation is correct (i.e. circular constraint was there) I still get the same DOF.
As you suggested I joined, the freecad model.
Attachments
assemblage.FCStd
(316.37 KiB) Downloaded 26 times
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