Re: [Yade-users] [Question #655455]: Apply compressive or tensile force to a packed geometry of spheres
Question #655455 on Yade changed: https://answers.launchpad.net/yade/+question/655455 Status: Open => Expired Launchpad Janitor expired the question: This question was expired because it remained in the 'Open' state without activity for the last 15 days. -- 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 #655455]: Apply compressive or tensile force to a packed geometry of spheres
Question #655455 on Yade changed: https://answers.launchpad.net/yade/+question/655455 Swapnil posted a new comment: Thanks for all the help 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 #655455]: Apply compressive or tensile force to a packed geometry of spheres
Question #655455 on Yade changed: https://answers.launchpad.net/yade/+question/655455 Jan Stránský posted a new comment: Hello, if you apply the same force to all (equal) particles, they just accelerate equally as a rigid body, so no interaction is expected behavior. 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 #655455]: Apply compressive or tensile force to a packed geometry of spheres
Question #655455 on Yade changed: https://answers.launchpad.net/yade/+question/655455 Status: Answered => Open Swapnil is still having a problem: Thanks Jan. I tried this and it appears to work :) But I have one more doubt now. The cylinder (as a whole) seems to be moving in one direction and I do not see the particles interacting. Do I have to try the ´O.engines´ as well in order to see the whole effect? Not sure if I am doing it the right way. -- 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 #655455]: Apply compressive or tensile force to a packed geometry of spheres
Question #655455 on Yade changed: https://answers.launchpad.net/yade/+question/655455 Jan Stránský proposed the following answer: > Now I am trying to apply a force to this group of spheres: you have to assign force to each sphere: for sphere in spheres: O.forces.setPermF(sphere.id,(1,1,1)) # probably Vector3(1,1,1) / len(O.bodies) #O.forces.addF(sphere.id,(1,1,1),permanent=True) or you can create a rigid clump instead of O.bodies.append (depending on your needs): cid,bids = O.bodies.appendClumped(spheres) O.forces.setPermF(cid,(1,1,1)) #O.forces.addF(cid,(1,1,1),permanent=True) 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 #655455]: Apply compressive or tensile force to a packed geometry of spheres
Question #655455 on Yade changed: https://answers.launchpad.net/yade/+question/655455 Swapnil posted a new comment: Hi Jan, Sorry if the question was ambiguous. To create a cylinder geometry packed with spheres I used the following commands: from import yade pack pred=pack.inCylinder(centerBottom= (0,0,-3),centerTop=(0,0,3),radius=.05) spheres=pack.randomDensePacl(pred,spheresInCell=2000,radius=0.0025) O.bodies.append(spheres) This creates a body (cylinder with spheres). Now, how do I retrieve the ID of this body for further application ( e.g. loading ). This is what I am confused about. When it comes to loading, thinking of applying forces of 1 N along the three axes I have used the following command: O.forces.setPermF(0,(1,1,1)) But it displays : `ForceContainer' object has no attribute 'setPermF'. I will try to follow the link you send me ( https://answers.launchpad.net/yade/+question/578362). Thanks.. :) -- 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 #655455]: Apply compressive or tensile force to a packed geometry of spheres
Question #655455 on Yade changed: https://answers.launchpad.net/yade/+question/655455 Status: Open => Answered Jan Stránský proposed the following answer: Hello concerning setPermF, see [1] or give more info [2] > I am not sure how we get the ID of this body. What command do we have to use? please specify more "this body". To get id of a body, simply do: body.id or again be more specific cheers Jan [1] https://answers.launchpad.net/yade/+question/578362 [2] https://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
Re: [Yade-users] [Question #655455]: Apply compressive or tensile force to a packed geometry of spheres
Question #655455 on Yade changed: https://answers.launchpad.net/yade/+question/655455 Swapnil posted a new comment: Also, I am not sure how we get the ID of this body. What command do we have to use? -- 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 #655455]: Apply compressive or tensile force to a packed geometry of spheres
New question #655455 on Yade: https://answers.launchpad.net/yade/+question/655455 Hi friends, I have created a ´constructive solid geometry´ - a cylinder and packed it with spheres from import yade pack pred=pack.inCylinder(centerBottom= (0,0,-3),centerTop=(0,0,3),radius=.05) spheres=pack.randomDensePacl(pred,spheresInCell=2000,radius=0.0025) O.bodies.append(spheres) Now I am trying to apply a force to this group of spheres: the command I gave after reading the documentation: O.forces.setPermF(0,(1,1,1)) (I am thinking of applying equal forces (1 N) from all directions) Weirdly, it displays: 'ForceContainer' object has no attribute 'setPermF' Could you suggest a way out? thanks -- 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
