Hi Anton, I just had a look at py/tests/clump.py, that's the test which fails. I added this after line 60 (before NewtonIntegrator is called):
for b in O.bodies: print b.material and that's what I get: <FrictMat instance at 0x1014c10> None So the second body has no material. I think it's more a problem in the test. In a, lets say, real simulation the material always exists (or not?), so I am not sure if checking for the material makes sense and it would be quit inefficient. However, I am not familiar with the testing stuff. Is there anyone who knows why the second body gives 'None' for the material? Klaus On Thu, 19 Jan 2012 06:31:09 PM Anton Gladky wrote: > > Real getDampCoeff() { return material->damping; }; > > Can you check here a material existence? > > Anton > > On Thu, Jan 19, 2012 at 8:14 AM, Klaus Thoeni <klaus.tho...@gmail.com> wrote: > > Hi guys, > > > > can anyone help me on this? > > > > Klaus > > > > On Thu, 12 Jan 2012 06:03:16 PM Klaus Thoeni wrote: > >> Hi guys, > >> > >> as discussed with Bruno in Barcelona I need different non-viscous > >> damping coefficients for different materials. I introduced this > >> capability by adding a variable damping to the base class material > >> which is initialised with NaN. The body class has a function > >> getDampCoeff() and in > >> NewtonIntegrator I use this function in order to change the damping > >> coefficients. When running some examples it seems that everything works > >> fine. However, I just run 'yade --test' and it gives me a seg fault: > >> > >> testVelocity (yade.TestSimpleClump) > >> Clump: velocities of member assigned by NewtonIntegrator ... > >> Segmentation fault > >> > >> I think I now where the problem is. In NewtonIntegrator I call something > >> like: > >> > >> if(!isnan(b->getDampCoeff())) dampcoeff=b->getDampCoeff(); > >> > >> where getDampCoeff() is defined in body.hpp as: > >> > >> Real getDampCoeff() { return material->damping; }; > >> > >> I think the test doesn't have a material and therefore I get the seg > >> fault. Right? How can we fix this so that I can commit the code? > >> > >> Klaus > > > > _______________________________________________ > > Mailing list: https://launchpad.net/~yade-dev > > Post to : yade-dev@lists.launchpad.net > > Unsubscribe : https://launchpad.net/~yade-dev > > More help : https://help.launchpad.net/ListHelp > > _______________________________________________ > Mailing list: https://launchpad.net/~yade-dev > Post to : yade-dev@lists.launchpad.net > Unsubscribe : https://launchpad.net/~yade-dev > More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~yade-dev Post to : yade-dev@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-dev More help : https://help.launchpad.net/ListHelp