Search found 375 matches

Go to advanced search

by fandaL
Thu Sep 17, 2020 2:31 pm
Forum: FEM
Topic: Topology optimization
Replies: 102
Views: 31326

Re: Topology optimization

I am stepping through the release announcement of FC 0.19 to update the Wiki accordingly. This way I found this feature. When using the addon manager I don't find a macro named "Beso". Can you please add it so that beso can be installed via the AddonManager? I can use the macro but as it is, it nee...
by fandaL
Tue Aug 04, 2020 8:41 am
Forum: Open discussion
Topic: FreeCAD on the web
Replies: 659
Views: 161761

Re: FreeCAD on the web

... Scientific_literature ... Good to have a page like this. Later, we can add a link to there from the main FreeCAD page. I would recommend to follow some citation style (there is plenty of them). It is really easy to generate citations by citation managers (e.g. https://zbib.org/ ). Sure, there i...
by fandaL
Sat Aug 01, 2020 1:20 pm
Forum: FEM
Topic: FEM: Status of old GMSH interface PR and discussion of STL meshing through GMSH
Replies: 13
Views: 741

Re: FEM: Status of old GMSH interface PR and discussion of STL meshing through GMSH

A last comment: I know that we can create STLs from Geometry via the Mesh WB. As far as I remember there already exists a function to create also an STL from a FemMesh. Wouldn't it be nice to provide also a button for the latter one? I had the feeling that Mesh WB is sometimes not as exact w.r.t. g...
by fandaL
Fri Jul 31, 2020 7:31 pm
Forum: FEM
Topic: FEM: Status of old GMSH interface PR and discussion of STL meshing through GMSH
Replies: 13
Views: 741

Re: FEM: Status of old GMSH interface PR and discussion of STL meshing through GMSH

have not had the time to do anything in this regard ... No hurry on this. Maybe I mean it in different way. I thought that you import STL mesh to FC and use GMSH to create FEM mesh from it (including volume) and different element size from original STL. It does not need different icon - output is F...
by fandaL
Fri Jul 31, 2020 6:44 pm
Forum: FEM
Topic: FEM: Status of old GMSH interface PR and discussion of STL meshing through GMSH
Replies: 13
Views: 741

Re: FEM: Status of old GMSH interface PR and discussion of STL meshing through GMSH

a) Does it make sense to let the meshing icon also be applied for an STL mesh (i.e. from the meshing workbench), too? This may be of interest for topology optimizing projects, since they usually get an STL from a marching cubes algorithm. Even when FC prescribes loads, BCs and material on geometry,...
by fandaL
Wed Jul 08, 2020 9:57 pm
Forum: FEM
Topic: Topology optimization
Replies: 102
Views: 31326

Re: Topology optimization

Hi and welcome to the forum.
Supposing you use new FreeCAD version 0.19, some naming has changed since I tested it last time. It should be fixed now (by added new lines 466 and 467 in beso_fc_gui.py https://github.com/fandaL/beso/commit/9 ... c4d8656dbd ).
by fandaL
Tue Jun 23, 2020 6:44 am
Forum: FEM
Topic: Problems to simulate centrifugal force
Replies: 8
Views: 725

Re: Problems to simulate centrifugal force

My doubt remains; Shouldn't the result of the calculation by FEM, considering the rotation, using the * dload, centrif function, be similar to the calculation by mass and radius of rotation? Actually, you are right. Trying to check the analytical calculation, I get: 6000 RPM = 628.3 rad/s F = m * o...
by fandaL
Mon Jun 22, 2020 10:02 pm
Forum: FEM
Topic: Problems to simulate centrifugal force
Replies: 8
Views: 725

Re: Problems to simulate centrifugal force

Hi,
F = m * v^2 / r = m * omega^2 * r
is valid only for point mass. If you want to calculate centrifugal force on real body, you need to integrated over the radius (distance from rotation axis).
by fandaL
Wed Jun 10, 2020 7:28 am
Forum: FEM
Topic: About axisymmetric element in CalculiX
Replies: 5
Views: 353

Re: About axisymmetric element in CalculiX

Hi, everyone. I have a problem when applying CLOAD to a solid model using CAX4 elements. Nodes on left side of the model belongs to the axis of symmetry. When the uniform pressure is to be applied at the top surface, to my knowledge, the force(CLOAD) at each node must increase as the distance from ...

Go to advanced search