New question #681356 on Yade:
https://answers.launchpad.net/yade/+question/681356
Hi,
During the simulation of the interactions between two polyhedrons or one
polyhedron and wall, I want to detect the equivalent CrossSection, penetration
Volume and depth, contact point between them. I tried wrapper of
PolyhedraGeom() such as contactPoint, equivalentCrossSection, penetrationVolume
and something else, but it returned nothing for that. Please tell me how to
get these informations during the simulation.
Following are the simple example for two polyhedrons contact:
from yade import pack,export
from yade import polyhedra_utils
from yade import geom,utils,ymport
from yade import qt
from yade import *
matP = PolyhedraMat()
matP.density = 2500 #kg/m^3
matP.young = 3e8
matP.poisson = 0.21 # real 0.21
matP.frictionAngle = 0.65
O.materials.append(matP)
matW = PolyhedraMat()
matW.density = 1950 #kg/m^3
matW.young = 6e7
matW.poisson = 0.33 # real 0.21
matW.frictionAngle = 0.23
O.materials.append(matW)
b1 = polyhedra_utils.polyhedra(matP,size=(0.046,0.046,0.046),seed=4)
b1.state.pos=(0.2,0.2,0.46)
O.bodies.append(b1)
b2=polyhedra_utils.polyhedra(matW,v=((0,0,0.35),(0.4,0,0.35),(0.4,0.4,0.35),(0,0.4,0.35),(0,0,0.4),(0.4,0,0.4),(0.4,0.4,0.4),(0,0.4,0.4)),fixed=True,
color=(0.75,0.65,0.65))
O.bodies.append(b2)
O.bodies[1].state.blockedDOFs='xyzXYZ'
O.forces.setPermF(O.bodies[0].id,(0,0,-100))
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(),Ig2_Sphere_Sphere_ScGeom()],
[Ip2_PolyhedraMat_PolyhedraMat_PolyhedraPhys(),Ip2_FrictMat_PolyhedraMat_FrictPhys(),Ip2_FrictMat_FrictMat_FrictPhys()],
[Law2_PolyhedraGeom_PolyhedraPhys_Volumetric()],
),
NewtonIntegrator(damping=0.7,gravity=(0,0,-9.81),label='newton'),
#PyRunner(command='IniBalance()',iterPeriod=1,label='step')
]
O.dt = 0.01
O.pause()
qt.Controller()
V = qt.View()
V.screenSize = (550,450)
V.sceneRadius = 1
V.eyePosition = (0.7,0.5,0.1)
V.upVector = (0,0,1)
V.lookAt = (0.15,0.15,0.1)
#
Thanks a lot
best regard!
Dez
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