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[Jan Stránský <question240620@xxxxxxxxxxxxxxxxxxxxx>]

Question #240620 on Yade changed:
https://answers.launchpad.net/yade/+question/240620

    Status: Open => Answered

Jan Stránský proposed the following answer:
Hi Oguz,
I have no problem with the scripts.. what version of Yade do you use?
cheers
Jan



2013/12/12 Oguz Cebeci <question240620@xxxxxxxxxxxxxxxxxxxxx>

> Question #240620 on Yade changed:
> https://answers.launchpad.net/yade/+question/240620
>
> Oguz Cebeci posted a new comment:
> Hi,
> i tried to start the examples in the "examples/polyhedra"  folder. But i
> always get the following error:
> "ImportError: cannot import name polyhedra_utils"
> Is there a solution to fix this?
>
> from yade import plot, polyhedra_utils
> from yade import qt
>
> m = PolyhedraMat()
> m.density = 2600 #kg/m^3
> m.Ks = 20000
> m.Kn = 1E6 #Pa
> m.frictionAngle = 0.6 #rad
>
> maxLoad = 3E6
> minLoad = 1E3
>
> O.bodies.append(utils.wall(0,axis=2,sense=1, material = m))
>
> t = polyhedra_utils.polyhedralBall(0.025, 100, m, (0,0,0))
> t.state.pos = (0,0,0.5)
> O.bodies.append(t)
>
> def checkUnbalanced():
>   print "unbalanced forces = %.5f, position %f, %f,
> %f"%(utils.unbalancedForce(), t.state.pos[0], t.state.pos[1],
> t.state.pos[2])
>
>
>
> O.engines=[
>    ForceResetter(),
>
>  InsertionSortCollider([Bo1_Polyhedra_Aabb(),Bo1_Wall_Aabb(),Bo1_Facet_Aabb()]),
>    InteractionLoop(
>       [Ig2_Wall_Polyhedra_PolyhedraGeom(),
> Ig2_Polyhedra_Polyhedra_PolyhedraGeom(),
> Ig2_Facet_Polyhedra_PolyhedraGeom()],
>       [Ip2_PolyhedraMat_PolyhedraMat_PolyhedraPhys()], # collision
> "physics"
>       [PolyhedraVolumetricLaw()]   # contact law -- apply forces
>    ),
>    #GravityEngine(gravity=(0,0,-9.81)),
>    NewtonIntegrator(damping=0.5,gravity=(0,0,-9.81)),
>    PyRunner(command='checkUnbalanced()',realPeriod=3,label='checker')
> ]
>
>
> #O.dt=0.025*polyhedra_utils.PWaveTimeStep()
> O.dt=0.00025
>
>
> qt.Controller()
> V = qt.View()
>
>
> O.saveTmp()
> #O.run()
>
>
>
> --------------------------------------------------------------------------------------------------------------------------------------------------
>
> Another problem is in the "examples/tetra" folder:
> "NameError: name 'tetraPoly' is not defined"
>
>
>
> ################################################################################
> #
> # Script to test tetra gl functions and prescribed motion
> #
>
> ################################################################################
> v1 = (0,0,0)
> v2 = (1,0,0)
> v3 = (0,1,0)
> v4 = (0,0,1)
>
> t1 = tetraPoly((v1,v2,v3,v4),color=(0,1,0))
> O.bodies.append((t1))
>
> def changeVelocity():
>         if O.iter == 50000:
>                 t1.state.vel = (-1,0,0)
>         if O.iter == 100000:
>                 t1.state.vel = (0,1,-1)
>         if O.iter == 150000:
>                 t1.state.vel = (0,0,0)
>                 t1.state.angMom = (0,0,10)
>         if O.iter == 200000:
>                 O.pause()
>
> O.engines = [
>         ForceResetter(),
>         InsertionSortCollider([Bo1_Polyhedra_Aabb()]),
>         InteractionLoop([],[],[]),
>         NewtonIntegrator(),
>         PyRunner(iterPeriod=1,command="changeVelocity()"),
> ]
> O.step()
>
>
> try:
>         from yade import qt
>         qt.View()
> except:
>         pass
>
> O.dt = 1e-5
> t1.state.vel = (1,0,0)
> O.run()
>
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