Question #234129 on Yade changed: https://answers.launchpad.net/yade/+question/234129
Jan Stránský proposed the following answer: Hi Lingran, > Sorry for replying to you so late, not problem at all for me :-) > it’s not possible to run yade simulations on my personal windows 8 > computer at home. I should replace windows 8 with windows 7 as soon as > possible. > you are able to run yade on windows 7 (just for my curiosity)? > > Here is the whole script: http://pastebin.com/xM5Djdmq thanks, I will try it > > > 1. “In c++ code, the values are transfered from previous time step > to the current one, while in your python script, your values are always > the current one”. > > The question is I also use du=i.geom.shearInc and calculate Ft=Ft-kt*du, > why it can not be considered as a updating of value? > Basicly you are updating the value, you are right. But the starting point of the update is different. In c++, you start with shearForce from previous step and do some update (to current step). In python you start to update already updated (in c++) shearForce (in current step). Maybe I got something wrong, that's why I asked you for the script to test it myself, but just now I see this difference as the most important one. > > 2. I got same values of elastic energy at each O. iter both from > c++ and python. If c++ is one time step earlier than python, then the > values shouldn’t be the same. > elastic energy is computed from current values of force (i.e. the same in c++ and python), so this is ok > > 3. It is still difficult for me to understand how does your script > work? > > print Ftt,i.phys.shearForce # now both should be the same----- > do you mean Ftt=i.phys.shearForce here? Then why should them be equal > to each other? > > sorry, I will try your script and then try to formulate the answer in as understandable way as possible :-) cheers Jan -- 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 : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
