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[Oguz Cebeci <question239835@xxxxxxxxxxxxxxxxxxxxx>]

New question #239835 on Yade:
https://answers.launchpad.net/yade/+question/239835

Hi,
I tried to apply some simulation. I am in need of a cauldron which is "tumbling". My approach was to add the HarmonicRotationEngine. I tried to apply this engine two times on one object. One rotation in (1,0,0) and the other one in (0,1,0) direction. But yade only uses the last engine I declared, such that the harmonic rotation in this case is only in (0,1,0) direction. Is there any solution?

Here is my Code:


from yade import ymport
fctIds=O.bodies.append(ymport.stl('cauldron.stl',color=(0,1,0),wire=False,fixed=True))


sp=pack.SpherePack()
# generate randomly spheres with uniform radius distribution
sp.makeCloud((-.2,-.2,.2),(.2,.2,.1),rMean=.020,seed=1)
sp.toSimulation()
amplitude=((2*pi)/360)*.75

O.engines=[
   ForceResetter(),
   InsertionSortCollider([Bo1_Sphere_Aabb(),Bo1_Facet_Aabb()]),
   InteractionLoop(
      # handle sphere+sphere and facet+sphere collisions
      [Ig2_Sphere_Sphere_L3Geom(),Ig2_Facet_Sphere_L3Geom()],
      [Ip2_FrictMat_FrictMat_FrictPhys()],
      [Law2_L3Geom_FrictPhys_ElPerfPl()]
   ),
   GravityEngine(gravity=(0,0,-9.81)),
   NewtonIntegrator(damping=0.5),
   HarmonicRotationEngine(ids=fctIds,rotationAxis=[1,0,0],zeroPoint=(0,0,0),rotateAroundZero=True,A=amplitude,f=30,dead=False,label='xRot'),
   HarmonicRotationEngine(ids=fctIds,rotationAxis=[0,1,0],zeroPoint=(0,0,0),rotateAroundZero=True,A=amplitude,f=30,dead=False,label='yRot')
	                   


   
]
O.dt=.00005*utils.PWaveTimeStep()


Best regards!
Thanks!


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