New question #676183 on Yade:
https://answers.launchpad.net/yade/+question/676183
Hello,
I've just started learning Yade recently. I want to consolidate several balls
together and give one of them initial speed, then let it collide with the
surface.
However, when I opened the 3D perspective, I found that in the process, the
ball did not have any speed. After checking, I think there is something wrong
with my fllowing code.
##################################code############################################
#define parameters
damp=0.1
M=1000
velocity=5
anguler=pi/4
rhoSmall=0.5
rhoBig=3
#define the balls
sphereBig=sphere((0,0,2*rhoSmall+rhoBig),radius=rhoBig)
sphereSmall=sphere((0,0,rhoSmall),radius=rhoSmall)
#clump
clumpId=O.bodies.appendClumped([sphereBig,sphereSmall])
#define the area
area=yade.geom.facetBox((0,0,1),(10,10,1),wallMask=31)#a box opens on the top
O.bodies.append(area)
#change the velocity
O.bodies[clumpId[1][0]].state.vel=(0,velocity*cos(anguler),-1*velocity*sin(anguler))
O.engines=[
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb(),Bo1_Facet_Aabb()]),
InteractionLoop(
[Ig2_Sphere_Sphere_ScGeom(),Ig2_Facet_Sphere_ScGeom()],
[Ip2_FrictMat_FrictMat_FrictPhys()],
[Law2_ScGeom_FrictPhys_CundallStrack()]
),
NewtonIntegrator(gravity=(0,0,-9.81),damping=damp)
]
O.dt=.05*PWaveTimeStep()
##############################end################################################
Can you find out where the error of my code is? I want to tie more balls
together in the future, but the experiment of two balls fails. Can someone
answer that?
Yingnan
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