[Yade-users] [Question #290423]: Interal friction angle - repose angle
New question #290423 on Yade: https://answers.launchpad.net/yade/+question/290423 Hi all, As I have understand in YADE by considering Mohr-Coulomb theory the INTERNAL friction ( which be assigned to material as its property) is combination of static friction and interlocking . In other words combination of peak and residual friction angle (?) So as you may know, we can assume the angle of repose ( the static angle of material) equal to residual friction angel. If I do some parametric study on friction angle definitely by increasing the internal friction angle ( the only kind of friction in YADE???) , the repose angle will be increase. Now this question will be raised, is there any chance to introduce peak and residual friction angle individually in order to compare angle of repose to residual friction angle ? if no , is INTERNAL friction , mean of peak and residual ? or, I hope explain my question in appropriate way. if no, no drama, I will try again ;) -- 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 #290423]: Interal friction angle - repose angle
Question #290423 on Yade changed: https://answers.launchpad.net/yade/+question/290423 Description changed to: Hi all, As I have understood in YADE by considering Mohr-Coulomb theory the INTERNAL friction ( which be assigned to material as its property) is combination of static friction and interlocking . In other words combination of peak and residual friction angle (?) So as you may know, we can assume the angle of repose ( the static angle of material) equal to residual friction angel. If I do some parametric study on friction angle definitely by increasing the internal friction angle ( the only kind of friction in YADE???) , the repose angle will be increase. Now this question will be raised, is there any chance to introduce peak and residual friction angle individually in order to compare angle of repose to residual friction angle ? if no , is INTERNAL friction , mean of peak and residual ? or, I hope explain my question in appropriate way. if no, no drama, I will try again ;) -- 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 #290423]: Interal friction angle - repose angle
Question #290423 on Yade changed: https://answers.launchpad.net/yade/+question/290423 Status: Open => Answered Jérôme Duriez proposed the following answer: Hi, It seems to me you try to identify * macroscopic values such as the peak or residual friction angle as observed in a triaxial test on a sample, or the repose angle of another sample * to microscopic values such as the friction angle at the contact between two discrete elements. This is *not* possible in DEM. The macroscopic friction angle as observed e.g. at peak or residual states during triaxial compressions depends of other things than the microscopic friction angle assigned in YADE (or any DEM code) between two elements. The first example that comes to my mind is the figure 3.19 of [Chareyre2003] (see https://yade-dem.org/doc/references.html). No need to understand french to get the figure's meaning: the local friction angle (between two DE) is on the x-axis while the macroscopic friction angle (the one observed during triaxial test, at peak state)is on the y-axis. It is clear from the Figure that for one given local friction angle, you can get different macro friction angles (i.e. different Mohr-Coulomb internal friction angles), depending e.g. from the porosity. Jerome -- 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 #290423]: Interal friction angle - repose angle
Question #290423 on Yade changed: https://answers.launchpad.net/yade/+question/290423 Status: Answered => Solved Seti confirmed that the question is solved: Thanks Jérôme Duriez, that solved my question. -- 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
