Re: [Yade-users] [Question #692123]: Packing using ThermalEngine
Question #692123 on Yade changed: https://answers.launchpad.net/yade/+question/692123 Status: Open => Needs information Robert Caulk requested more information: Hello, Still not an MWE. An MWE is a self contained script that recreates your problem. It is short and contains only the necessary code that someone can copy and paste into their terminal to recreate your problem. No external files. Cheers, Robert -- You received this question notification because your team yade-users 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 #692123]: Packing using ThermalEngine
Question #692123 on Yade changed: https://answers.launchpad.net/yade/+question/692123 Status: Needs information => Answered Robert Caulk proposed the following answer: Please ensure that your walls are containing your packing. -- You received this question notification because your team yade-users 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
[Yade-users] [Question #692146]: About the stress tensor in facet and wall
New question #692146 on Yade: https://answers.launchpad.net/yade/+question/692146 Hello, dear professors, I recently use the 'utils.bodyStressTensor()' to obtain the stress tensors on each partcile. I found in the list, there were also the stress tensors for facets and walls. The stress tensors are the sum of the contact force of one partile divided by the its volume and is negative for compression. Since actually there is no volume in facets and walls, I want to know how these stress tenors are calculated ? Thank you in advance! Xiaolong -- You received this question notification because your team yade-users 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 #692146]: About the stress tensor in facet and wall
Question #692146 on Yade changed: https://answers.launchpad.net/yade/+question/692146 Status: Open => Answered Jérôme Duriez proposed the following answer: Hello, The answer in C++ language is at [1]. In a maybe more human language, the interactions that carry the forces entering the stress expression are assumed to have a geom [2] component of GenericSpheresContact [3] (or child) type (if not, YADE would probably crash) As such, there necessarily is a reference radius assigned to each interacting body, see refR* [4]. For wall or facets, the radius seems to be chosen as once or twice the sphere's one [5], hence the volume. How much sense this makes might be a next question ;-) [*] https://gitlab.com/yade-dev/trunk/-/blob/b87224b638ed162dd8865d097332286b4b2c9263/pkg/dem/Shop_02.cpp#L885, most recent version as of now [2] https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.Interaction.geom [3] https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.GenericSpheresContact [4] https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.GenericSpheresContact.refR1 and refR2 [5] https://gitlab.com/yade-dev/trunk/-/blob/b87224b638ed162dd8865d097332286b4b2c9263/pkg/dem/Ig2_Facet_Sphere_ScGeom.cpp#L122 for Facet-Sphere and https://gitlab.com/yade-dev/trunk/-/blob/b87224b638ed162dd8865d097332286b4b2c9263/pkg/dem/Ig2_Facet_Sphere_ScGeom.cpp#L220 for Wall-Sphere -- You received this question notification because your team yade-users 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 #692122]: how to add cohesion between box and spheres
Question #692122 on Yade changed: https://answers.launchpad.net/yade/+question/692122 Yuxuan Wen posted a new comment: Hello Jérôme, 1) Doing so, you're not adding anything, you're modifying something which has already been computed by YADE. Thank you for replying, now I understand the simulation loop shown in the documentation and the mechanism to calculate body movement in YADE. It seems that i) the interaction force is calculated based on the bodies' position (hence the interaction); ii) then other forces (gravity, BCs) are added on the bodies; iii) then the movement of bodies is calculated by NewtonIntegrator. 2) Not really understood, sorry :-) What I want to figure out is answered in your replying in 1), thank you very much! May I ask you another question, that how do you think is appropriate to add cohesive force between spheres and the box plate to avoid bouncing? Change the material from FrictMat to CohFrictMat? Kind Regards, Yuxuan -- You received this question notification because your team yade-users 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
[Yade-users] [Question #692152]: Output packing of all gauss points using FEMxDEM
New question #692152 on Yade: https://answers.launchpad.net/yade/+question/692152 Hi all, I just moved to a new workstation and reinstalled my Yade, Escript and Python from the old python 2.x to python 3.x. The new versions are Python 3.5, Escript 5.5 and the newest YADE-source, respectively. When I run the FEMxDEM example, i..e 'biaxialSmooth.py' and tried to output the current DEM packing at each gauss points, I found the output files are named, 'packing_20200731T111611p38210_1.yade.gz' ... and there are totally 32 files in the folder 'result/packing'. However, in the tested case, there are totally 8*16 FEM meshes, and should be totally 8*16*4 = 512 gauss points. What do these 32 files represent? How to output all 512 DEM packing? In the older version using python 2.x (I installed last year in an old workstation), everything goes well and all 512 packings can be outputted directly. What has been changed in the new version of YADE？ Thanks for your help. Best, Zheng -- You received this question notification because your team yade-users 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
[Yade-users] [Question #692153]: Output packing of all gauss points using FEMxDEM
New question #692153 on Yade: https://answers.launchpad.net/yade/+question/692153 Hi all, I just moved to a new workstation and reinstalled my Yade, Escript and Python from the old python 2.x to python 3.x. The new versions are Python 3.5, Escript 5.5 and the newest YADE-source, respectively. When I run the FEMxDEM example, i..e 'biaxialSmooth.py' and tried to output the current DEM packing at each gauss points, I found the output files are named, 'packing_20200731T111611p38210_1.yade.gz' ... and there are totally 32 files in the folder 'result/packing'. However, in the tested case, there are totally 8*16 FEM meshes, and should be totally 8*16*4 = 512 gauss points. What do these 32 files represent? How to output all 512 DEM packing? In the older version using python 2.x (I installed last year in an old workstation), everything goes well and all 512 packings can be outputted directly. What has been changed in the new version of YADE？ Thanks for your help. Best, Zheng -- You received this question notification because your team yade-users 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 #692153]: Output packing of all gauss points using FEMxDEM
Question #692153 on Yade changed: https://answers.launchpad.net/yade/+question/692153 Status: Open => Invalid Jan Stránský rejected the question: Duplicate of https://answers.launchpad.net/yade/+question/692152 -- You received this question notification because your team yade-users 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
