yade-users team mailing list archive

[内山康太郎 <question706191@xxxxxxxxxxxxxxxxxxxxx>]

New question #706191 on Yade:
https://answers.launchpad.net/yade/+question/706191

I'm in a lot of trouble

I am doing an analysis on a direct(simple) shear test.
I have created a program like below.

 I have one question.
Does YADE have a program to determine the displacement of the created cylinder in the XY direction?

The cylinder whose displacement I want to know is line 40.
””idsCyl2 = O.bodies.append(geom.facetCylinder((0, 0, 0.015), radius=.06, height=.01, segmentsNumber=30, wallMask=5))””

#################################################################
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))

#I would like to know the displacement this idsCyl2
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,(0,0,200e3))
###############################################
#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='plotPlotData()',iterPeriod=1),
]

###############################################
#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])	
	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
	)
	plot.saveDataTxt('pipe_force.out',vars=('disp','force_x','force_y'))
	
plot.plots={
	'disp':('force_x','force_y'),
	'i':('Dz')
	}
plot.plot()
#################################################################


-- 
You received this question notification because your team yade-users is
an answer contact for Yade.