New question #706234 on Yade:
https://answers.launchpad.net/yade/+question/706234
Thanks to Jean, I was able to come this far. First of all, thank you Jean.
I am doing an analysis on a direct(simple) shear test.
I have created a program like below.
Next, I want idsCyl2 to move not only in the X direction, but also in the Y
direction. In the future, I would like to input seismic waveforms in the XY
direction as well.
Now, after moving idsCyl2 (O.bodies[idsCyl2[0]].state.displ()[0]) by 0.020 in
the X direction, I want to move idsCyl2 by 0.020 in the Y direction. We also
want to repeat in the negative direction.
For example, the locus for dsCyl2 is (0.020, 0) ⇒ (0.020, 0.020) ⇒ (-0.020,
0.020) ⇒ (-0.020, -0.020) ⇒ (0.020, -0.020).
At that time, to run idsCyl2= on Yade's terminal, redefine the engine and enter
it. So is there a way to pause the analysis when (0.020 , 0) is reached?
Of course I know how to do it with O.pause() and an input file
def checkDistortion():
If O.bodies[idsCyl2[0]].state.displ()[0] > .02:
O.Pause()
I tried to input, but the analysis itself stopped and I could not move to
(0.020, 0.020).
Also, in Yade's terminal
If O.bodies[idsCyl2[0]].state.displ()[0] > .
O.Pause()
But it just gets cylDisplacementx at that point and doesn't pause when it
reaches (0.020, 0).
Is there a way to move idsCyl2 in the X direction (0.020,0) and pause it?
####################################################################
from __future__ import print_function
from yade import pack,plot,polyhedra_utils,geom
from yade import export,qt
from yade.gridpfacet import *
import math
import numpy as np
import os
frictangle = np.radians(25)#45do
density = 3400.0
young = 3e8
gravity = (0.0, 0.0, 0)
velocity_cyl=1
velocity_cyl_idsCyl2=1
velocity_cyl_Box=1
# create cloud of spheres and insert them into the simulation
# we give corners, mean radius, radius variation
###############################################
#Create sphere
###############################################
mat_sp = CohFrictMat(alphaKr=.2,alphaKtw=.2,young = young, poisson =
0.35,frictionAngle=(frictangle), density=density)
O.materials.append(mat_sp)
pred=pack.inCylinder(centerBottom=(0,0,-0.01),centerTop=(0,0,.02),radius=.06)
sp0=pack.randomDensePack(pred,spheresInCell=3000,radius=.003)
O.bodies.append(sp0)
###############################################
#Boundary creation
###############################################
idsCyl1 = O.bodies.append(geom.facetCylinder((0, 0, 0.00), radius=.06,
height=.02, segmentsNumber=30, wallMask=6))
idsCyl2 = O.bodies.append(geom.facetCylinder((0, 0, 0.015), radius=.06,
height=.01, segmentsNumber=30, wallMask=5))
#idsCyl3 = O.bodies.append(geom.facetCylinder((0, 0, .0225), radius=0.10,
height=.005, segmentsNumber=100, wallMask=2))
radius1 = .06
radius2 = .15
fixBoxIds=[]
moveBoxIds=[]
i=0
for i in range(0,365,5):
r = math.radians(i)
x1 = radius1 * math.cos(r)
y1 = radius1 * math.sin(r)
x2 = radius2 * math.cos(r-math.radians(5))
y2 = radius2 * math.sin(r-math.radians(5))
x3 = radius2 * math.cos(r+math.radians(5))
y3 = radius2 * math.sin(r+math.radians(5))
x4 = radius1 * math.cos(r-math.radians(5))
y4 = radius1 * math.sin(r-math.radians(5))
x5 = radius1 * math.cos(r+math.radians(5))
y5 = radius1 * math.sin(r+math.radians(5))
x6 = radius2 * math.cos(r)
y6 = radius2 * math.sin(r)
fixBoxIds.append(O.bodies.append(facet([(x1,y1,.01),(x2,y2,.01),(x3,y3,.01)])))
fixBoxIds.append(O.bodies.append(facet([(x4,y4,.01),(x5,y5,.01),(x6,y6,.01)])))
moveBoxIds.append(O.bodies.append(facet([(x1,y1,.01),(x2,y2,.01),(x3,y3,.01)])))
moveBoxIds.append(O.bodies.append(facet([(x4,y4,.01),(x5,y5,.01),(x6,y6,.01)])))
upper_plate=box((0,0,-0.014),(0.06,0.06,0.001))
upper_plateID=O.bodies.append(upper_plate)
O.bodies[upper_plateID].state.blockedDOFs = 'xyXY'
#O.forces.addF(upper_plateID,(0,0,50e3),permanent=True)
O.forces.setPermF(upper_plateID,(0,0,50e3))
###############################################
#engines
###############################################
O.engines = [
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb(),Bo1_Facet_Aabb(),Bo1_Box_Aabb()]),
InteractionLoop(
# interaction loop
[Ig2_Sphere_Sphere_ScGeom(),Ig2_Facet_Sphere_ScGeom(),Ig2_Box_Sphere_ScGeom()],
[Ip2_CohFrictMat_CohFrictMat_CohFrictPhys()],
[Law2_ScGeom6D_CohFrictPhys_CohesionMoment(always_use_moment_law=True),Law2_ScGeom_FrictPhys_CundallStrack()]
),
NewtonIntegrator(gravity=gravity,damping=0.2),
##TranslationEngine(translationAxis=[0,0,1],velocity=-1,ids=idsCyl3),
TranslationEngine(translationAxis=[1,0,0],velocity=velocity_cyl_idsCyl2,ids=idsCyl2),
TranslationEngine(translationAxis=[1,0,0],velocity=velocity_cyl_Box,ids=moveBoxIds),
PyRunner(command='checkStress1()', iterPeriod=10),
#PyRunner(command='checkStress2()', iterPeriod=10),
PyRunner(command='plotPlotData()',iterPeriod=1),
]
def checkStress1():
cylDisplacement_x = O.bodies[idsCyl2[0]].state.displ()[0]
cylDisplacement_y = O.bodies[idsCyl2[0]].state.displ()[1]
plot.addData(
cylDisplacement_x=cylDisplacement_x,
cylDisplacement_y=cylDisplacement_y,
)
print('{:1.04f}'.format(cylDisplacement_x)," ",
'{:1.04f}'.format(cylDisplacement_y))
###############################################
#output
###############################################
sp_num = len([b for b in O.bodies if isinstance(b.shape, Sphere)]) # 粒子の総数をカウント
print("number of spheres = ",sp_num)
O.dt=0.5*PWaveTimeStep()
def plotPlotData():
pipe_force_x = sum([O.forces.f(i)[0] for i in idsCyl2])
pipe_force_y = sum([O.forces.f(i)[1] for i in idsCyl2])
cylDisplacementx = O.bodies[idsCyl2[0]].state.displ()[0]
cylDisplacementy = O.bodies[idsCyl2[0]].state.displ()[1]
cylDisplacementz = O.bodies[idsCyl2[0]].state.displ()[2]
Dz=upper_plate.state.displ()[2]
plot.addData(
i=O.iter,
disp=O.time*velocity_cyl,
force_x=pipe_force_x,
force_y=pipe_force_y,
Dz=Dz,
cylDisplacementx=cylDisplacementx,
cylDisplacementy=cylDisplacementy,
cylDisplacementz=cylDisplacementz,
)
plot.saveDataTxt('pipe_force.out',vars=('disp','force_x','force_y',
'Dz',
'cylDisplacementx','cylDisplacementx','cylDisplacementx'
))
"""
def checkStress2():
if O.bodies[idsCyl2[0]].state.displ()[0] > 0.0020:
O.pause()
"""
plot.plots={
'disp':('force_x','force_y'),
'i':('Dz'),
'cylDisplacementx':('cylDisplacementy',)
}
plot.plot()
#plot.saveDataTxt(O.tags['id'] + '.txt')
####################################################################
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