Error in activating Moment (includeMoment=True) in Mindlin contact law
Dear all,
I am trying to model a drained triaxial test in dry sand. I used Mindlin contact law for contact between spheres. Also, I want to consider bending moment and activate includeMoment=True in Law2_ScGeom_
Would you please look at my script or run it and inform me about mistakes if there are?
Thank you for your help,
Elham
# encoding: utf-8
import matplotlib; matplotlib.
import matplotlib.pyplot as plt
from yade import pack
import pylab
from numpy import *
import numpy as np
from math import *
utils.readParam
from yade.params import table
seed=table.seed
num_spheres=
compFricDegree = table.compFricD
confiningS=-50000
rate=1
Young=200 #MPa
Poisson=0.3
## creat a packing with a specific particle side distribution (PSD)
psdSizes,
psdSizesArray=
psdSizesMeter=
sp=pack.
mn,mx=Vector3(
sp.makeCloud(
O.materials.
O.materials.
walls=aabbWalls
wallIds=
O.bodies.
triax=TriaxialS
internalCompac
goal1=confiningS,
goal2=confiningS,
goal3=confiningS,
max_vel=10,
label="triax"
)
newton=
O.engines=[
ForceResetter(),
InsertionSortC
InteractionLoop(
[Ig2_
[Ip2_
[Law2_
),
GlobalStiffnes
triax,
newton
]
while 1:
O.run(1000,True)
unb=unbalance
print ('Porosity:
if unb<0.01 and abs(triax.
break
print ("Particle Distribution is Stable")
print ('Porosity:
#######
## REACH NEW EQU. STATE ###
#######
finalFricDegree = 26.5 # contact friction during the deviatoric loading
#We move to deviatoric loading, let us turn internal compaction off to keep particles sizes constant
triax.internalC
# Change contact friction (remember that decreasing it would generate instantaneous instabilities)
setContactFrict
while 1:
O.run(1000,True)
unb=unbalance
print ('Porosity:
if unb<0.001 and abs(triax.
break
triax.depth0=
triax.height0=
triax.width0=
print ("Time for the deviator loads")
print ('Porosity:
#######
## Start test ###
#######
AxialstrainMatr
DeviatoricStres
VolumetricStrai
PrincipalStress
ESecanti=[]
triax.stressMask=5
triax.goal2=-rate
triax.goal1=
triax.goal3=
key='E_
file=open(
while 1:
O.run(1000,True)
AxialstrainMat
DeviatoricStre
PrincipalStres
VolumetricStra
ESecanti.
print ('eyy='
if triax.strain[1] <-0.03:
break
file.write(
file.close()
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