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by mfasano
Tue Sep 15, 2020 2:42 pm
Forum: Users Showcase
Topic: V0.19 Top Down Assembly Design Using Assembly4--Update #9
Replies: 53
Views: 10382

Re: V0.19 Top Down Assembly Design Using Assembly4--Update #8

You have been doing great work for a long time. I have said I am always impressed when I visit the User Showcase, and your work does that. Your work with assembly 4 makes me confident about using it as a base for a multibody dynamics Workbench using MBDyn. MBDyn WB(shameless plug for my workbench)
by mfasano
Thu Sep 10, 2020 4:54 pm
Forum: Assembly
Topic: Exploding with Assembly4
Replies: 8
Views: 875

Re: Exploding with Assembly4

I found if you change the placement and do an Gui.updataGui(), it will update the viewscreen with the parts placement but not do a recompute that would apply expressions. Do a recompute and they will go back to the assembled positions May-be, but when you use the "Transform" tool, it doesn't give y...
by mfasano
Thu Sep 10, 2020 12:47 pm
Forum: Assembly
Topic: Exploding with Assembly4
Replies: 8
Views: 875

Re: Exploding with Assembly4

Maybe stop Assembly4 from re-solving the assembly temporarily so I don't have to release everything before I can transform it? Assembly4 uses FreeCAD's built-in ExpressionEngine to calculate the parts placements, and I don't think it's possible to temporarily deactivate them globally. I had asked a...
by mfasano
Thu Aug 27, 2020 4:30 pm
Forum: FEM
Topic: FreeCAD as pre-post processor for MBDyn
Replies: 134
Views: 15675

Re: FreeCAD as pre-post processor for MBDyn

Your video shows nice progress. When you have it ready I'll try the new tutorial and give feedback. Does your code structure allow easy addition of new joints? What is the issue you're facing with the total joint? Is the bug you are referring to is in the FreeCAD daily assembly4 workbench? The code...
by mfasano
Thu Aug 27, 2020 3:03 pm
Forum: Developers corner
Topic: How many man hours would FreeCAD need to reach feature parity with SolidWorks/SolidEdge?
Replies: 40
Views: 3630

Re: How many man hours would FreeCAD need to reach feature parity with SolidWorks/SolidEdge?

Physics/Simulation engine Create a new workbench for Physics/Simulation purpose, by wrapping some existing open source engine, such as Chrono . I do not mean to Highjack this thread, but I have been working on a workbench using MBDyn. The discussion of the project is below. https://forum.freecadweb...
by mfasano
Wed Aug 26, 2020 11:24 pm
Forum: FEM
Topic: FreeCAD as pre-post processor for MBDyn
Replies: 134
Views: 15675

Re: FreeCAD as pre-post processor for MBDyn

I have made a mechanism other than a pendulum. It is a slide crank. I had to add quite a few MBDyn elements. to get it. I added commands for a clamp joint, an axial revolution joint, an in line joint, a prismatic joint and a ramp drive caller. I used the slide crank example in Sky Engineering's MBDy...
by mfasano
Sun Aug 02, 2020 3:00 pm
Forum: FEM
Topic: FreeCAD as pre-post processor for MBDyn
Replies: 134
Views: 15675

Re: FreeCAD as pre-post processor for MBDyn

I have included a tutorial in a page of the wiki.
https://github.com/mfasano727/MBDynFCwb ... m-Tutorial

I hope it is helpful.
by mfasano
Wed Jul 29, 2020 1:10 pm
Forum: FEM
Topic: FreeCAD as pre-post processor for MBDyn
Replies: 134
Views: 15675

Re: FreeCAD as pre-post processor for MBDyn

@mfasano and @T-Garnier I've tried the addon quickly, it's a nice start. I would recommend you provide a step-by-step example. This will allow more people to try it and give feedback or code... perhaps you'll get some important tips. I for myself find it somewhat difficult to understand even the si...
by mfasano
Wed Jul 15, 2020 11:12 am
Forum: FEM
Topic: FreeCAD as pre-post processor for MBDyn
Replies: 134
Views: 15675

Re: FreeCAD as pre-post processor for MBDyn

I added instructions for the total joint and total pin joint in the wiki page for the asm4 branch. I will be writing a step by step instucyoins soon. I am including a pendulum with revolute hinge joints FreeCAD file and MBDyn input file generated. I am also including a pendulum with total joints Fre...
by mfasano
Sat Jul 04, 2020 1:50 pm
Forum: FEM
Topic: FreeCAD as pre-post processor for MBDyn
Replies: 134
Views: 15675

Re: FreeCAD as pre-post procesor for MBDyn

I put what I have on the asm4 branch https://github.com/mfasano727/MBDynFCwb/tree/asm4 I added the total joint and the total pin joint. I will add instructions for those soon. The commands for the axial rotation and the ramp drive caller do not work. I am working on an inline joint and a prismatic j...

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