yade-users team mailing list archive

[Przemek <question707869@xxxxxxxxxxxxxxxxxxxxx>]

New question #707869 on Yade:
https://answers.launchpad.net/yade/+question/707869

Hi, 
I've problem with Cohesive Frictional Contact  law. I'm trying to run a simulation but I receive:

<FATAL ERROR> InteractionLoop:178 virtual void yade::InteractionLoop::action(): None of given Law2 functors can handle interaction #23+24, types geom:ScGeom=1 and phys:CohFrictPhys=6 (LawDispatcher::getFunctor2D returned empty functor)

Does the problem with my script or with something else?

#!/usr/bin/python
# -*- coding: utf-8 -*-
from __future__ import division
from __future__ import print_function

import math

from future import standard_library

standard_library.install_aliases()
from yade import plot, pack, timing, qt, export
import time, sys, os, copy
import numpy as np
import gts


# default parameters or from table
readParamsFromTable(
        noTableOk=True,  # unknownOk=True,
        young=70e9,
        poisson=0.3,
        density=2700,
        frictionAngle=radians(30),
        normalCohesion=300e6,
        shearCohesion=300e6/sqrt(3),
        intRadius=1.5,
        damping=.4,

        sphereRadius=1e-3,
        length=100e-3,
        width=50e-3,
        thickness=4e-3
)

from yade.params.table import *

if 'description' in list(O.tags.keys()): O.tags['id'] = O.tags['id'] + O.tags['description']

aluminiumId = O.materials.append(
        CohFrictMat(
            young=young,
            poisson=poisson,
            density=density,
            frictionAngle=frictionAngle,
            normalCohesion=normalCohesion,
            shearCohesion=shearCohesion,
            momentRotationLaw=True
        )
)

r = sphereRadius
partI=pack.inAlignedBox((0, 0, -thickness/2-r/2), (width+r, length, thickness/2+r/2))
partII=pack.inAlignedBox((width, 0, -thickness/2-r/2), (length+r, width, thickness/2+r/2))
sample = partI|partII
O.bodies.append(pack.regularHexa(sample,radius=r,gap=0.))

load = []

for b in O.bodies:
    for b in O.bodies:
        if b.state.pos[1] > (length-3*r):  # support
            b.state.blockedDOFs = 'xyzXYZ'
            b.shape.color = (0, 1, 1)
        elif b.state.pos[0] > (length-2*r):  # load
            load.append(b.id)
            b.state.blockedDOFs = 'z'
            b.shape.color = (0, 1, 1)
        else:
            b.shape.color = (0, 0, 1)
            b.state.blockedDOFs = 'z'

O.dt = PWaveTimeStep()*1e-1


O.engines = [
    ForceResetter(),
    InsertionSortCollider([Bo1_Sphere_Aabb(aabbEnlargeFactor=intRadius)]),
    InteractionLoop(
        [Ig2_Sphere_Sphere_ScGeom(interactionDetectionFactor=intRadius)],
        [Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(setCohesionNow=True, setCohesionOnNewContacts=True)],
        [Law2_ScGeom6D_CohFrictPhys_CohesionMoment()],
    ),
    NewtonIntegrator(damping=damping),
    PyRunner(iterPeriod=1, command='updateParameters()'),
    PyRunner(command='addPlotData()', iterPeriod=1),
    #PyRunner(iterPeriod=100, command='recordVTK()')
]

O.step()
print(len(O.interactions))

def updateParameters():
    for i in range(len(load)):
        O.bodies[load[i]].state.vel = Vector3(-100e0, 0, 0)

def addPlotData():
    for b in O.bodies:
        b.shape.color = scalarOnColorScale(b.state.stress[0, 0], -300e6, 300e6)


def recordVTK():
    txtfilename = 'L_shape/L_test' + str(O.iter) + '.txt'
    vtkfilename = 'L_shape/L_test' + str(O.iter) + '.vtk'
    export.textExt(txtfilename, format='x_y_z_r_attrs', attrs=['b.state.oldTemp',
                                                               'b.state.stress[0,0]','b.state.stress[0,1]','b.state.stress[0,2]',
                                                               'b.state.stress[1,1]','b.state.stress[1,2]','b.state.stress[2,2]','O.time'],
                   comment='temperature, S_11, S_12, S_13, S_22, S_23, S_33, Time')
    export.text2vtk(txtfilename, vtkfilename)


qt.View()
#plot.plots={'eps':('sigma')}
#plot.plot()
#O.run()

Kind regards,
Przemek

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