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by Mark Szlazak
Tue Nov 05, 2019 9:37 pm
Forum: Assembly
Topic: Call for team! Reimplementing constraint solver
Replies: 17
Views: 1029

Re: Call for team! Reimplementing constraint solver

In case you missed it, Ben Kenwright, the author of the Dual Quaternion papers people have posted, has authored a paper on programming rigid body constraint and physics solvers. Maybe the approaches are similar for constraints solvers alone or they could be made compatible with a future solvers that...
by Mark Szlazak
Thu Oct 31, 2019 9:50 pm
Forum: Developers corner
Topic: Adventure of fixing sketcher solver for large sketches
Replies: 16
Views: 659

Re: Adventure of fixing sketcher solver for large sketches

Back then when I tried to write a 3d solver for assemblies I failed for that very reason: standard numeric solvers are unable to cope with the fact that rotational and transitional degrees of freedom have different sensitivities, a unit change in the parameter leads to to massively different change...
by Mark Szlazak
Mon Aug 19, 2019 11:02 pm
Forum: Announcements & Features
Topic: Merge of Link3 branch into master
Replies: 29
Views: 3256

Re: Merge of Link3 branch into master

Sorry, I know this sounds dumb but is this merge part of FreeCAD 0.19 Daily?
by Mark Szlazak
Sat Aug 17, 2019 9:34 pm
Forum: Announcements & Features
Topic: Merge of Link3 branch into master
Replies: 29
Views: 3256

Re: Merge of Link3 branch into master

Thank you Realthunder, Wmayer and all others involved in this step towards a stronger FreeCAD with an assembly.
by Mark Szlazak
Tue Jul 23, 2019 4:35 pm
Forum: FEM
Topic: FEA for additive manufacturing.
Replies: 24
Views: 1172

Re: FEA for additive manufacturing.

The "Material Point Method" may hold more promise for this type of analysis: Nice! Thanks. Also, I have been in contact with one author from this paper https://www.researchgate.net/publication/322688604_A_Computationally_Efficient_Finite_Element_Framework_to_Simulate_Additive_Manufacturing_Processe...
by Mark Szlazak
Sat Jul 20, 2019 5:52 am
Forum: FEM
Topic: FEA for additive manufacturing.
Replies: 24
Views: 1172

Re: FEA for additive manufacturing.

I send requests to two sources and have received nothing back even after reminders. Maybe something will show up next week but I doubt it.
by Mark Szlazak
Tue Jul 16, 2019 4:19 am
Forum: FEM
Topic: FEA for additive manufacturing.
Replies: 24
Views: 1172

Re: FEA for additive manufacturing.

Not heard back yet but found some recent and relevant papers. https://onlinelibrary.wiley.com/doi/pdf/10.1002/mdp2.28 https://www.researchgate.net/profile/Shiyan_Jayanath/publication/322688604_A_Computationally_Efficient_Finite_Element_Framework_to_Simulate_Additive_Manufacturing_Processes/links/5ba...
by Mark Szlazak
Sat Jul 13, 2019 8:56 pm
Forum: FEM
Topic: FEA for additive manufacturing.
Replies: 24
Views: 1172

Re: FEA for additive manufacturing.

Just try a demo of genoa export the inp file and try it/ share it ... We can see what happens This would have to be done at De Anza Colleges DMT lab in Cupertino or possibly at Hawkridge Systems in San Jose to access their industrial printers. Currently, I am in Canada and will not be able to use t...
by Mark Szlazak
Sat Jul 13, 2019 5:53 am
Forum: FEM
Topic: FEA for additive manufacturing.
Replies: 24
Views: 1172

Re: FEA for additive manufacturing.

Found this video on simulations of the AM process.
At about 18 minutes in it starts to describe the problem.

phpBB [video]


Still waiting on more details about how this type of software does this and whether Calculix could be coaxed into doing it as well.
by Mark Szlazak
Fri Jul 12, 2019 5:15 am
Forum: FEM
Topic: FEA for additive manufacturing.
Replies: 24
Views: 1172

Re: FEA for additive manufacturing.

Hello, Very interesting topic !!! There is a plugin which links freecad with Cura software based 3d printing machines, https://forum.freecadweb.org/viewtopic.php?t=30540 Maybe can help... Yes it is interesting. Thanks for the pointer but I do not think Cura is the right type of software. I appears ...

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