There is mention about using simulink on the MBDyn homepage. Sky Engineering's MBDyn tutorial has a discussion about using Matlab for post-processing.Kappa wrote: ↑Fri Nov 27, 2020 5:30 pmHello,
I was wondering if this post processor allows the export to Matlab of the results obtained from the simulation. The original software, MBDyn, has this function, which is why I was wondering if this feature was also provided in this post processor.
I also wondered if it would be possible to export the multibody model to Simulink using a block (for example S-function), or to obtain the symbolic equations of the model to perform a parametric analysis
For now we are concentrating on simulations with rigid bodies. I hope someday we will be able to model others. I do not know if MBDyn can simulate Von Mises stresses.julieng wrote: ↑Sun Nov 29, 2020 12:12 amHello,
I am interested in using MBDyn with FreeCAD. I have try some years ago a similar module in Comsol.
If I remember well, it has an extra cost in term of memory and time to be able to calculate the constraints in bodies with the dynamic module (elastic bodies). When computing only displacement, velocities, acceleration simulations was lighter (rigid bodies).
My question is, is it possible to calculate also von Mises stresses with MBDyn?
Thank you for your answermfasano wrote: ↑Sun Nov 29, 2020 6:13 pmThere is mention about using simulink on the MBDyn homepage. Sky Engineering's MBDyn tutorial has a discussion about using Matlab for post-processing.
https://www.sky-engin.jp/en/MBDynTutori ... hap07.html
We will probably sticking to FreeCAD for the pre and post processing for now.
The .mov file is just a text file I guess it could be easily read into matlab. Exporting the model to simulink sounds ambitious, I don't see doing that is the near future. MSC Adams does not mention simulink in there page about cosimulations. A search showed a group at the University of Wisconsin doing it.Kappa wrote: ↑Tue Dec 01, 2020 6:29 pm
I honestly find it very handy to build the multibody model using FreeCAD, so I was wondering if, after having built it and run the simulation, it was possible to export the file ". mov" (also present in the tutorial you posted). If this is not possible, a future implementation of this feature in FreeCAD may be interesting. The same goes for the possibility to export the model in Simulink, so as to be able to perform a cosimulation (as happens for example in software like MSC Adams).
Welcome back!josegegas wrote: ↑Fri Dec 11, 2020 2:36 amHi everyone... I apologize for such a long time not being in touch with the forum. The thing is that I had my thesis defense, ammendments, etc, and all this got combined with the pandemics and all the problems that came with it. My life is just slowly coming back to normal, so planning on getting back into FreeCAD + MBDyn....