[Kratos] Meshing of shell and solid elements

Mini, Andreas andreas.mini en tum.de
Lun Oct 5 07:53:19 CEST 2015


Dear Javi,


in the attachment you get the example I am trying to mesh. It is a solid mechanics problem.


If you have any questions do not hesitate to contact me.


Ciao

Andreas Mini



-------------------------------------------------------
Technische Universität München
Lehrstuhl für Statik
Prof. Dr.-Ing. Kai-Uwe Bletzinger
Arcisstr. 21
80333 München

Tel. +49 (0)89 289 22435
Fax +49 (0)89 289 22421
Andreas.Mini at tum.de
www.st.bgu.tum.de
-------------------------------------------------------
________________________________
Von: Javi Gárate <fjgarate at cimne.upc.edu>
Gesendet: Freitag, 2. Oktober 2015 16:40
An: Riccardo Rossi
Cc: Mini, Andreas; Pooyan Dadvand; kratos at listas.cimne.upc.edu; rougered4 at gmail.com
Betreff: Re: Meshing of shell and solid elements


Hi Riccardo,

I'll need an example to reproduce the error.

Anyway, kratos interace does a lot of work on the Beforemesh GiD event.
If I've understood the problem, kratos is forcing GiD to ignore a surface on a meshing event. We can disable the whole event, but many things can stop working as expected.

It can be a solution for a single model, but I don't recommend to act this way on a product. For example, as far as I know, the BeforeMesh event can not be disabled for Fluid application, due to it calculates the skin mesh there.



As I said, if you send me an example I can try to determinate which is the best solution.

Javi Gárate



El 2015-10-02 14:17, Riccardo Rossi escribió:

Hi Andreas,


Abel already told us it is a problem with the Kratos problemtype, unfortunately we are simply not able to fix it ...

apparently the kratos problemtype is telling to the Gid not to mesh internal surfaces, but we don't know how to deactivate this...nor if it would break a lot of other things

Javier, tienes alguna sugerencia de como podemos apagar esta caracteristica? (en el problemtype viejo, no en el nuevo)

ciao
Riccardo


On Fri, Oct 2, 2015 at 1:34 PM, Mini, Andreas <andreas.mini at tum.de<mailto:andreas.mini at tum.de>> wrote:

Dear Riccardo, Dear Pooyan,



as found out together with Abel some weeks ago, the problem with the combined meshing of solid and shell elements is not a problem of GID.



The problem is only occuring, when I use the Kratos problemtype. Thus I think it might be a problem with the problemtype of the Kratos, since it is simply ignoring the surface, which should be meshed by shell elements, when it is embedded into solid elements.



Do you have any suggestion how to solve this problem?



Thank you in advance.



Kind regards

Andreas

-------------------------------------------------------
Technische Universität München
Lehrstuhl für Statik
Prof. Dr.-Ing. Kai-Uwe Bletzinger
Arcisstr. 21
80333 München

Tel. +49 (0)89 289 22435<tel:%2B49%20%280%2989%20289%2022435>
Fax +49 (0)89 289 22421<tel:%2B49%20%280%2989%20289%2022421>
Andreas.Mini at tum.de<mailto:Andreas.Mini at tum.de>
www.st.bgu.tum.de<http://www.st.bgu.tum.de>
-------------------------------------------------------



--



Riccardo Rossi

PhD, Civil Engineer



member of the Kratos Team: www.cimne.com/kratos<http://www.cimne.com/kratos>

lecturer at Universitat Politècnica de Catalunya, BarcelonaTech (UPC)

Research fellow at International Center for Numerical Methods in Engineering (CIMNE)



C/ Gran Capità, s/n, Campus Nord UPC, Ed. C1, Despatx C9

08034 - Barcelona - Spain - www.cimne.com<http://www.cimne.com>  -

T.(+34) 93 401 56 96 skype: rougered4



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