Re: [Yade-users] [Question #203385]: Export command for sphere packings from YADE to FEM packages like ABAQUS
Question #203385 on Yade changed: https://answers.launchpad.net/yade/+question/203385 Status: Answered = Open Manu is still having a problem: HI Jan Thank you for the feedback. I am actually interested in exporting the particles to ABAQUS, so that I can understand the deformation and non-linear behaviour of the particles (metal powder) during compaction. If you can guide me to what command I can use, that would be of great help. Thanks Manu On 17 July 2012 21:25, Jan Stránský question203...@answers.launchpad.netwrote: Question #203385 on Yade changed: https://answers.launchpad.net/yade/+question/203385 Jan Stránský proposed the following answer: Hello Manu, as Jerome already said, there is no deformation of particles. Didn't you meant the displacement of particles? if so, there are ways to export them. Concerning the errors of export.textExt format, could you please send a short script reproducing the error and also the actual error you get? it will help us to solve your problem or to correct a mistakes in source code if there are some. I do not know Abaqus very well, but what would you like to achieve by exporting geometry (and also what you exactly mean by geometry)? have abaqus some features to handle spherical particles? It could be possible to export facets (triangles) as tirangular finite elements, but this feature is not implemented yet (according to my knowledge). There is also no automatic meshing in Yade, althought facets (triangles) can be imported from some external files or can be created using gts module. The creating of spheres (which is automatized) we call packing rather than meshing (as there is no real mesh), did you mean this? good luck and do not hesitate to ask again :-) Jan 2012/7/17 Manu question203...@answers.launchpad.net New question #203385 on Yade: https://answers.launchpad.net/yade/+question/203385 I am a new user of YADE. I am trying to export the sphere packings from YADE to a finite element solver like ABAQUS to understand how the sphere particles deform. However, I am not sure of the commands I need to use to export the sphere packings from YADE to ABAQUS. When I use a command like: export.textExt(filename, format=’x_y_z_r’) from the YADE python file I get errors. I don't know if there is an example in YADE manual on how I can export the YADE geometry into ABAQUS for meshing. The YADE documentation files don't have suitable help files in this regard. If you can guide me to a suitable example of the command I should use to export the model to ABAQUS from YADE it would be of great help for me to get started. Also if I could get some help files on meshing in YADE it would be of great help to me. Thanks a lot Manu -- You received this question notification because you are a member of yade-users, which is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp -- You received this question notification because you are a member of yade-users, which is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp -- You received this question notification because you are a member of yade-users, which is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #203385]: Export command for sphere packings from YADE to FEM packages like ABAQUS
Question #203385 on Yade changed:
https://answers.launchpad.net/yade/+question/203385
Status: Open = Answered
Luc Scholtès proposed the following answer:
Hey,
Just to be sure about what you want to do. Do you actually want to
export positions and radii of particles into a text file so that you can
import it into ABAQUS? If yes, the export function should work, but you
have to import the export module first (I know, the combination import
export can sound a bit weird). In your terminal (with a model previously
launched, of course!), try to type:
from yade import export
export.text('spheres')
That should do the trick.
You are probably aware of those works from B Harthong and JF Jerier on
the subject:
http://www.sciencedirect.com/science/article/pii/S0032591010004481
http://www.sciencedirect.com/science/article/pii/S0020740312001014
http://www.sciencedirect.com/science/article/pii/S0020768309002054
Cheers
Luc
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Re: [Yade-users] [Question #203385]: Export command for sphere packings from YADE to FEM packages like ABAQUS
Question #203385 on Yade changed: https://answers.launchpad.net/yade/+question/203385 Status: Open = Answered jduriez proposed the following answer: Hello, I can not answer to your precise question about export function, but for your question : how the sphere particles deform, it is very simple : they do not deform at all ! They can interpenetrate into each other, but the shapes do not change. Did I get your point ? -- You received this question notification because you are a member of yade-users, which is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #203385]: Export command for sphere packings from YADE to FEM packages like ABAQUS
Hello Manu, as Jerome already said, there is no deformation of particles. Didn't you meant the displacement of particles? if so, there are ways to export them. Concerning the errors of export.textExt format, could you please send a short script reproducing the error and also the actual error you get? it will help us to solve your problem or to correct a mistakes in source code if there are some. I do not know Abaqus very well, but what would you like to achieve by exporting geometry (and also what you exactly mean by geometry)? have abaqus some features to handle spherical particles? It could be possible to export facets (triangles) as tirangular finite elements, but this feature is not implemented yet (according to my knowledge). There is also no automatic meshing in Yade, althought facets (triangles) can be imported from some external files or can be created using gts module. The creating of spheres (which is automatized) we call packing rather than meshing (as there is no real mesh), did you mean this? good luck and do not hesitate to ask again :-) Jan 2012/7/17 Manu question203...@answers.launchpad.net New question #203385 on Yade: https://answers.launchpad.net/yade/+question/203385 I am a new user of YADE. I am trying to export the sphere packings from YADE to a finite element solver like ABAQUS to understand how the sphere particles deform. However, I am not sure of the commands I need to use to export the sphere packings from YADE to ABAQUS. When I use a command like: export.textExt(filename, format=’x_y_z_r’) from the YADE python file I get errors. I don't know if there is an example in YADE manual on how I can export the YADE geometry into ABAQUS for meshing. The YADE documentation files don't have suitable help files in this regard. If you can guide me to a suitable example of the command I should use to export the model to ABAQUS from YADE it would be of great help for me to get started. Also if I could get some help files on meshing in YADE it would be of great help to me. Thanks a lot Manu -- You received this question notification because you are a member of yade-users, which is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
