Re: [Yade-users] [Question #706332]: Reduce or remove rebound after contact
Question #706332 on Yade changed: https://answers.launchpad.net/yade/+question/706332 Status: Needs information => Open Huan gave more information on the question: Hello, I just recently picked up coding and starting to learn about YADE. If there is a better way to implement the coding and simulation, I'm all ears. 1. pandas actually isn't needed but I just use it for my data saving purposes. 2. I have a project to study about the particle packing by using free fall action, while the particles generated are related to sieve analysis e.g. 4.75mm, 4.00mm, 3.35 etc. Due to the simulation being slow, I am thinking of using free server to simulate the simulation. I was trying to created a box allow the sphere to ricochet against it and rebound into the cylinder. The next process of my project is to transform the sphere in this simulation into polyhedron. Thanks Huan -- 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 #706221]: Use of ChatGPT 4 for coding new YADE DEM constitutive laws
Question #706221 on Yade changed: https://answers.launchpad.net/yade/+question/706221 Status: Open => Solved Idan confirmed that the question is solved: thanks! i will try to prompt it with the source code and see if there are better results. -- 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 #706221]: Use of ChatGPT 4 for coding new YADE DEM constitutive laws
Question #706221 on Yade changed: https://answers.launchpad.net/yade/+question/706221 Jan Stránský posted a new comment: Hello, I have tried the result. TLTR: not so good actually.. As is my so fart experience with ChatGPT, all that glitters is not gold. For the first sight, it looks relatively OK. For more closer look, there are maaany problems to make it even compile (I gave up after not so short time) - wrong includes, - non-existent includes - using non-existent variables - redeclaration of variables and functions - ... Concerning actual implementation (TempDependentBurgersViscoElasticContactLaw::go), you have to check yourself if it computes it correctly. Specifically the tangentialForce value. Maybe just asking it for the implementation of Law2::go functions would have better results, but currently it produces non-compilable code (therefore the actual value is questionable). Cheers Jan -- 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 #706218]: Microstrain for an assembly of clumps in direct shear test
Question #706218 on Yade changed: https://answers.launchpad.net/yade/+question/706218 Bruno Chareyre posted a new comment: Hi, I confirm that clumps are not supported in this case. In fact, it should work if the clumped spheres are not overlapping too much, but in the general case it won't. Jan suggests a good workaround in #3. Note: a newer function [1] will let you switch from > Matrix3(*[TW.deformation(b.id,i,j) for i in range(0,3) for j in range(0,3)]) to > TW.deformationTensor(b.id) since the first is obviously a pain. [1] https://gitlab.com/yade-dev/trunk/-/merge_requests/943/diffs#4571c09191fb63b1bdb53a5ad573e72677b1892b_176_177 Should be reflected in yadedaily very soon. -- 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 #706332]: Reduce or remove rebound after contact
Question #706332 on Yade changed: https://answers.launchpad.net/yade/+question/706332 Status: Open => Needs information Jan Stránský requested more information: Hello, please provide a MWE [1]. In this case: - are "data", "df" and similar (and pandas in general) necessary to show your problem? If not, please remove them - are the "tiny" particles, making the simulation "very slow", necessary? Wouldn't just two layers of largest particles be sufficient? > Is it possible to only allows the particles to fall into the container without bouncing out after contact ... You can reduce the effect. Some options are: - contact law damping - numerical integrator damping - using higher cylinder to prevent spheres bouncing out - using "semi-permeable" wall, masked such that it does not contact with spheres going down, but does contact with those going up (preventing them to bounce out) - ... but IMO it is not possible (and even desirable) to remove "bouncing" completely > but it didn't work as I expected it to How did you expect it to work? Cheers Jan [1] https://www.yade-dem.org/wiki/Howtoask -- 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
