Question #691285 on Yade changed: https://answers.launchpad.net/yade/+question/691285
Jan Stránský requested more information: Hello, please provide a complete MWE [1]. There might be maaany reasons, it seems to be necessary to be able to try the code to solve the problem. > PyRunner(command='exportForces()',iterPeriod=int(math.ceil(tRec/O.dt))), just use iterPeriod=1 if you want the export each iteration (which I understood so far). > The normalForce file appear in the folder of simulation, but the value of fn > extracted at any time step is always 0. > i don't know if there's a command missing in the code, that would activate > the force? there is no special command (if your simulation works). But is you do not export each iteration, it is possible that the force just is zero.. > def exportForces(): > fn = 0 # initialization of the normal force > ... > fn = fn + i.phys.normalForce this should be error, fn=0 is int and you cannot add i.phys.normalForce (Vector3) to it. And as it is given here is syntax error.. waiting for MWE :-) 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 : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp

