Public bug reported:
Hi,
I was working with the Ip2_FrictMat_FrictViscoMat_FrictViscoPhys() law and I
think there is a bug with it. In this little script, the two particles must be
glued after contact, it is the case with the option 2 but in the option 1 it is
not. The difference between the two options is only the position of the spheres
(in one case the frictmat in on the top and in the other case this is the
frictviscomat).
I think the bug comes from this assignation of the material 1 and 2 in the C++
code but I'm not enough familiar with it to solve it.
I'm working with yadedaily : Yade 2017.01a-99-968a759~trusty
Loïc
Here's the script:
###########################################################################################
from yade import qt, plot
from yade.gridpfacet import *
import gts, os, locale, sys
import numpy as np
O.engines=[
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb(aabbEnlargeFactor = 1)]),
InteractionLoop([Ig2_Sphere_Sphere_ScGeom(interactionDetectionFactor = 1)],
[Ip2_FrictMat_FrictViscoMat_FrictViscoPhys()],
[Law2_ScGeom_FrictViscoPhys_CundallStrackVisco()]),
NewtonIntegrator(gravity=(0,0,0),damping=0.3,label='newton'),
]
R = 0.008
##### Materiaux #####
FrictViscoMat = O.materials.append( FrictViscoMat(betan = 1,young=5e9,
poisson=0.3, frictionAngle=radians(10),density = 4000))
FrictMat = O.materials.append( FrictMat(young=5e9, poisson=0.3,
frictionAngle=radians(10),density = 4000))
#### Option 1 => Not Working
s1 = O.bodies.append(utils.sphere((0,0,2), radius=R,color=[1,0,0], material =
FrictViscoMat))
s2 = O.bodies.append(utils.sphere((0,0,0), radius=R,color=[0,1,0], material =
FrictMat))
O.bodies[s1].state.vel[2] = -5
O.bodies[s2].state.vel[2] = 5
#### Option 2 => Working
#s1 = O.bodies.append(utils.sphere((0,0,0), radius=R,color=[1,0,0], material =
FrictViscoMat))
#s2 = O.bodies.append(utils.sphere((0,0,2), radius=R,color=[0,1,0], material =
FrictMat))
#O.bodies[s1].state.vel[2] = 5
#O.bodies[s2].state.vel[2] = -5
#######
v=qt.Controller()
v=qt.View()
v.viewDir = (0,1,0)
v.eyePosition = Vector3( 0, -5,1)
O.run()
O.dt = 1e-7
O.saveTmp()
#########################################################################################
** Affects: yade
Importance: Undecided
Status: New
** Description changed:
Hi,
- I was working with the Ip2_FrictMat_FrictViscoMat_FrictViscoPhys() law and I
think there is a bug with it. In this little script, the two particles must be
glued after contact, it is the case with the option 2 but in the option 1 it is
not. The difference between the two option is only the position of the spheres
(in one case the frictmat in on the top and in the other case this is the
frictviscomat).
- I think the bug comes from this assignation of the material 1 and 2 in the
C++ code but I'm not enough familiar with it to solve it.
+ I was working with the Ip2_FrictMat_FrictViscoMat_FrictViscoPhys() law and I
think there is a bug with it. In this little script, the two particles must be
glued after contact, it is the case with the option 2 but in the option 1 it is
not. The difference between the two options is only the position of the spheres
(in one case the frictmat in on the top and in the other case this is the
frictviscomat).
+ I think the bug comes from this assignation of the material 1 and 2 in the
C++ code but I'm not enough familiar with it to solve it.
I'm working with yadedaily : Yade 2017.01a-99-968a759~trusty
Loïc
Here's the script:
###########################################################################################
from yade import qt, plot
from yade.gridpfacet import *
import gts, os, locale, sys
import numpy as np
O.engines=[
- ForceResetter(),
- InsertionSortCollider([Bo1_Sphere_Aabb(aabbEnlargeFactor = 1)]),
- InteractionLoop([Ig2_Sphere_Sphere_ScGeom(interactionDetectionFactor =
1)],
- [Ip2_FrictMat_FrictViscoMat_FrictViscoPhys()],
- [Law2_ScGeom_FrictViscoPhys_CundallStrackVisco()]),
- NewtonIntegrator(gravity=(0,0,0),damping=0.3,label='newton'),
+ ForceResetter(),
+ InsertionSortCollider([Bo1_Sphere_Aabb(aabbEnlargeFactor = 1)]),
+ InteractionLoop([Ig2_Sphere_Sphere_ScGeom(interactionDetectionFactor =
1)],
+ [Ip2_FrictMat_FrictViscoMat_FrictViscoPhys()],
+ [Law2_ScGeom_FrictViscoPhys_CundallStrackVisco()]),
+ NewtonIntegrator(gravity=(0,0,0),damping=0.3,label='newton'),
]
R = 0.008
##### Materiaux #####
FrictViscoMat = O.materials.append( FrictViscoMat(betan = 1,young=5e9,
poisson=0.3, frictionAngle=radians(10),density = 4000))
FrictMat = O.materials.append( FrictMat(young=5e9, poisson=0.3,
frictionAngle=radians(10),density = 4000))
- #### Option 1 => Not Working
+ #### Option 1 => Not Working
s1 = O.bodies.append(utils.sphere((0,0,2), radius=R,color=[1,0,0], material =
FrictViscoMat))
s2 = O.bodies.append(utils.sphere((0,0,0), radius=R,color=[0,1,0], material =
FrictMat))
O.bodies[s1].state.vel[2] = -5
O.bodies[s2].state.vel[2] = 5
- #### Option 2 => Working
+ #### Option 2 => Working
#s1 = O.bodies.append(utils.sphere((0,0,0), radius=R,color=[1,0,0], material
= FrictViscoMat))
#s2 = O.bodies.append(utils.sphere((0,0,2), radius=R,color=[0,1,0], material
= FrictMat))
#O.bodies[s1].state.vel[2] = 5
#O.bodies[s2].state.vel[2] = -5
#######
v=qt.Controller()
v=qt.View()
v.viewDir = (0,1,0)
v.eyePosition = Vector3( 0, -5,1)
O.run()
O.dt = 1e-7
O.saveTmp()
#########################################################################################
--
You received this bug notification because you are a member of Yade
developers, which is subscribed to Yade.
https://bugs.launchpad.net/bugs/1718872
Title:
Ip2_FrictMat_FrictViscoMat_FrictViscoPhys() law body assignation
problem
Status in Yade:
New
Bug description:
Hi,
I was working with the Ip2_FrictMat_FrictViscoMat_FrictViscoPhys() law and I
think there is a bug with it. In this little script, the two particles must be
glued after contact, it is the case with the option 2 but in the option 1 it is
not. The difference between the two options is only the position of the spheres
(in one case the frictmat in on the top and in the other case this is the
frictviscomat).
I think the bug comes from this assignation of the material 1 and 2 in the
C++ code but I'm not enough familiar with it to solve it.
I'm working with yadedaily : Yade 2017.01a-99-968a759~trusty
Loïc
Here's the script:
###########################################################################################
from yade import qt, plot
from yade.gridpfacet import *
import gts, os, locale, sys
import numpy as np
O.engines=[
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb(aabbEnlargeFactor = 1)]),
InteractionLoop([Ig2_Sphere_Sphere_ScGeom(interactionDetectionFactor =
1)],
[Ip2_FrictMat_FrictViscoMat_FrictViscoPhys()],
[Law2_ScGeom_FrictViscoPhys_CundallStrackVisco()]),
NewtonIntegrator(gravity=(0,0,0),damping=0.3,label='newton'),
]
R = 0.008
##### Materiaux #####
FrictViscoMat = O.materials.append( FrictViscoMat(betan = 1,young=5e9,
poisson=0.3, frictionAngle=radians(10),density = 4000))
FrictMat = O.materials.append( FrictMat(young=5e9, poisson=0.3,
frictionAngle=radians(10),density = 4000))
#### Option 1 => Not Working
s1 = O.bodies.append(utils.sphere((0,0,2), radius=R,color=[1,0,0], material =
FrictViscoMat))
s2 = O.bodies.append(utils.sphere((0,0,0), radius=R,color=[0,1,0], material =
FrictMat))
O.bodies[s1].state.vel[2] = -5
O.bodies[s2].state.vel[2] = 5
#### Option 2 => Working
#s1 = O.bodies.append(utils.sphere((0,0,0), radius=R,color=[1,0,0], material
= FrictViscoMat))
#s2 = O.bodies.append(utils.sphere((0,0,2), radius=R,color=[0,1,0], material
= FrictMat))
#O.bodies[s1].state.vel[2] = 5
#O.bodies[s2].state.vel[2] = -5
#######
v=qt.Controller()
v=qt.View()
v.viewDir = (0,1,0)
v.eyePosition = Vector3( 0, -5,1)
O.run()
O.dt = 1e-7
O.saveTmp()
#########################################################################################
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