[Yade-users] [Question #695458]: Saving the Fsheer whole value

2021-02-10 Thread Pawel
New question #695458 on Yade:
https://answers.launchpad.net/yade/+question/695458

Hi, 
In the description of Contact model in the Yade documentation there is info 
that the force Ft is changed when is bigger than Fn - in which file is it? I'm 
looking for it and I can't find it.

I'm considering to save somehow the value of this Ft - Fn for analyze. 



All the best
Pawel

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Re: [Yade-users] [Question #678056]: three spheres with roling

2019-01-24 Thread Pawel
Question #678056 on Yade changed:
https://answers.launchpad.net/yade/+question/678056

Status: Answered => Solved

Pawel confirmed that the question is solved:
Hi Bruno
Thank you for the answer. 

I don't use the newest Yade - but it seems that the bug is still there.

Best
Pawel

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Re: [Yade-users] [Question #678056]: three spheres with roling

2019-01-24 Thread Pawel
Question #678056 on Yade changed:
https://answers.launchpad.net/yade/+question/678056

Status: Answered => Open

Pawel is still having a problem:
Hi Bruno
Please simply comment this line - it is my C++ function.

The problem is that when the middle sphere is moving the upper should
roll - but it is not doing it.

Best
Pawel

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[Yade-users] [Question #678056]: three spheres with roling

2019-01-24 Thread Pawel
New question #678056 on Yade:
https://answers.launchpad.net/yade/+question/678056

I have very simple test 3 spheres and one in middle is moving - question what 
is wrong and there are no rolling?

# basic simulation showing sphere falling ball gravity,
# bouncing against another sphere representing the support
os.environ['OMP_NUM_THREADS']='8'
import math
import random
# DATA COMPONENTS




promien_k = (3/(4*math.pi))**(1./3) 

young_k = 1e9 
poisson_k = 0.25
density_k = 1
vObnizenia = -0.5*promien_k
frictAngle = atan(0.6) 


#O.materials.append(FrictMat(young=young_k, poisson=poisson_k, 
density=density_k, frictionAngle=atan(0.3), label='kula'))


O.materials.append(CohFrictMat(young=young_k, poisson=poisson_k, 
density=density_k, frictionAngle=frictAngle,normalCohesion=0, shearCohesion=0, 
momentRotationLaw=False, label='kula'))

O.bodies.append([

utils.sphere(center=(0,0,0),radius=promien_k,fixed=True,material='kula')
],)
O.bodies.append([

utils.sphere(center=(0.5*promien_k,0,1.95*promien_k),radius=promien_k,fixed=False,material='kula')
],)

O.bodies.append([

utils.sphere(center=(-0.*promien_k,0,3.90*promien_k),radius=promien_k,fixed=False,material='kula')
],)

O.bodies[1].state.blockedDOFs='zx'
O.bodies[2].state.blockedDOFs='zx'

O.dt=utils.PWaveTimeStep()



#
nazwaPliku = "wyniki/kule"
nazwaPlikuIter = "wyniki/Kule_iter_30z"
### Parametry zapisu c++ 
print("DT do zapisu")
step = O.dt
PiterSave = 10 #ile zapisow w pliku
PtimeSr = 3*step
PtimeStart = 0. #start zapisu
PdeltaTime = 0.005 #1000*step #skok miedzy zapisami

TimeStartAll=100
DeltaTimeAll=1


# FUNCTIONAL COMPONENTS

# simulation loop -- see presentation for the explanation
O.engines=[
VppSaveInteractions(fileName=nazwaPlikuIter, iterSave= PiterSave, 
timeSr = PtimeSr, timeStart = PtimeStart, deltaTime= PdeltaTime,timeStartAll = 
TimeStartAll,deltaTimeAll = DeltaTimeAll ),
   ForceResetter(),
   PyRunner(command='O.forces.addMove(1,(vObnizenia*O.dt,0,0))',iterPeriod=1),
   
InsertionSortCollider([Bo1_Sphere_Aabb(aabbEnlargeFactor=1),Bo1_Wall_Aabb(),Bo1_Facet_Aabb()]),
   InteractionLoop(
[Ig2_Sphere_Sphere_ScGeom6D(interactionDetectionFactor=1.3),
Ig2_Wall_Sphere_ScGeom(),Ig2_Facet_Sphere_ScGeom6D()],
[Ip2_FrictMat_FrictMat_FrictPhys(),

Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(setCohesionNow=True,setCohesionOnNewContacts=True),
],
[Law2_ScGeom_FrictPhys_CundallStrack(),
]
),
   # apply gravity force to particles
   GravityEngine(gravity=(0,0,-9.81)),
   # damping: numerical dissipation of energy
   NewtonIntegrator(damping=0.2)
]

# set timestep to a fraction of the critical timestep
# the fraction is very small, so that the simulation is not too fast
# and the motion can be observed


# save the simulation, so that it can be reloaded later, for experimentation
O.saveTmp()
Gl1_Sphere.stripes=True
Gl1_Sphere.quality=1
yade.qt.Controller(), yade.qt.View();

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Re: [Yade-users] [Question #677876]: FrictPhys disable in contact

2019-01-20 Thread Pawel
Question #677876 on Yade changed:
https://answers.launchpad.net/yade/+question/677876

Pawel posted a new comment:
Hi Jan, 
Thank you very much for your answer.

Is there any possibility to eliminate that micro-bouncing?

All the best
Pawel

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Re: [Yade-users] [Question #677876]: FrictPhys disable in contact

2019-01-18 Thread Pawel
Question #677876 on Yade changed:
https://answers.launchpad.net/yade/+question/677876

Status: Needs information => Open

Pawel gave more information on the question:
Hi Jan,
thank you for your message

in c++ i have function VppSaveInteractions with code 
FOREACH(const shared_ptr& I, *scene->interactions){
if(I)
{
const shared_ptr& b1 = 
Body::byId(I->getId1(),scene);
const shared_ptr& b2 = 
Body::byId(I->getId2(),scene);


State* st1 = 
static_cast(b1->state.get());
State* st2 = 
static_cast(b2->state.get());

FrictPhys* physFP = 
dynamic_cast(I->phys.get());
cout << "phys "<< physFP;
}
It is only a part of longer code but here i need to gest phys becouse I want to 
save normal and shear force from connection.
 the pointer physe is 0

here is the python script

# basic simulation showing sphere falling ball gravity,
# bouncing against another sphere representing the support
os.environ['OMP_NUM_THREADS']='8'
import math
import random
# DATA COMPONENTS



promien_k = 0.0002 
promien_f = 0.00015/2 
young_k = 1e9 
poisson_k = 0.25
density_k = 1040

frictAngle = atan(0.6)


O.materials.append(FrictMat(young=young_k, poisson=poisson_k, 
density=density_k, frictionAngle=atan(0.3), label='kula'))



O.bodies.append([

utils.sphere(center=(0,0,0),radius=promien_k,fixed=True,material='kula')
],)
O.bodies.append([

utils.sphere(center=(0.2*promien_k,0,2*promien_k),radius=promien_k,fixed=False,material='kula')
],)


O.dt=utils.PWaveTimeStep()


#
nazwaPliku = "wyniki/kule"
nazwaPlikuIter = "wyniki/Kule_iter_30z"
### Parametry zapisu c++ 
print("DT do zapisu")
step = O.dt
PiterSave = 10 #ile zapisow w pliku
PtimeSr = 3*step
PtimeStart = 0. #start zapisu
PdeltaTime = 0.005 #1000*step #skok miedzy zapisami

TimeStartAll=100
DeltaTimeAll=1


# FUNCTIONAL COMPONENTS

# simulation loop -- see presentation for the explanation
O.engines=[
VppSaveInteractions(fileName=nazwaPlikuIter, iterSave= PiterSave, 
timeSr = PtimeSr, timeStart = PtimeStart, deltaTime= PdeltaTime,timeStartAll = 
TimeStartAll,deltaTimeAll = DeltaTimeAll ),
   ForceResetter(),
   
InsertionSortCollider([Bo1_Sphere_Aabb(aabbEnlargeFactor=1),Bo1_Wall_Aabb(),Bo1_Facet_Aabb()]),
   InteractionLoop(
[Ig2_Sphere_Sphere_ScGeom6D(interactionDetectionFactor=1.3),
Ig2_Wall_Sphere_ScGeom(),Ig2_Facet_Sphere_ScGeom6D()],
[Ip2_FrictMat_FrictMat_FrictPhys(),

Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(setCohesionNow=True,setCohesionOnNewContacts=True),
],
[Law2_ScGeom_FrictPhys_CundallStrack(),
]
),
   # apply gravity force to particles
   GravityEngine(gravity=(0,0,-9.81)),
   # damping: numerical dissipation of energy
   NewtonIntegrator(damping=0.2)
]

# set timestep to a fraction of the critical timestep
# the fraction is very small, so that the simulation is not too fast
# and the motion can be observed


# save the simulation, so that it can be reloaded later, for experimentation
O.saveTmp()
Gl1_Sphere.stripes=True
Gl1_Sphere.quality=1
yade.qt.Controller(), yade.qt.View();

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[Yade-users] [Question #677876]: FrictPhys disable in contact

2019-01-17 Thread Pawel
New question #677876 on Yade:
https://answers.launchpad.net/yade/+question/677876

Hi everyone, 
I have very  simple simulation. At the beginning there are two spheres, with 
material:

O.materials.append(FrictMat(young=young_k, poisson=poisson_k, 
density=density_k, frictionAngle=atan(0.3),))

and positions:
O.bodies.append([

utils.sphere(center=(0,0,0),radius=5,fixed=True,material=kula[0])
],)
O.bodies.append([

utils.sphere(center=(0.2*5,0,2*5),radius=promien_k,fixed=False,material=kula[0])
],)

In loop:

InteractionLoop(
[Ig2_Sphere_Sphere_ScGeom6D(interactionDetectionFactor=1.3)
],
[Ip2_FrictMat_FrictMat_FrictPhys(),

Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(setCohesionNow=True,setCohesionOnNewContacts=True)
],
[Law2_ScGeom_FrictPhys_CundallStrack(),
]
),
   # apply gravity force to particles
   GravityEngine(gravity=(0,0,-9.81)),
   # damping: numerical dissipation of energy
   NewtonIntegrator(damping=0.2)
]

The upper sphere is rotating over the first one - so the simulation is working.

I'm trying to write short program in C with detection of interaction. Two 
spheres are in interaction but the interaction all of the time is not real - i 
get 0 in I->isReal()

I can't figure out how to get this to work 
FrictPhys* physFP = dynamic_cast(I->phys.get());
tmp = physFP->shearForce;

tmp - is vector 

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[Yade-users] [Question #669193]: Yong Modulus rescale

2018-05-17 Thread Pawel
New question #669193 on Yade:
https://answers.launchpad.net/yade/+question/669193

Hi everyone,
I tried to simulate a one dimension excitation of material built of spheres. I 
have a problem with young modulus rescale because I wanted to use spheres with 
a diameter bigger than the width of material. I tried to rescale Young module 
with this equation: E = Ef  * w /(2 r) where E - is Young Module; Ef - is the 
young module from the experiment, w - width of material and r is the radius of 
spheres.

When I check the results of one dimension excitation the results from 
experiments (sigma/ epsilon) and from yade are not thesame (like there is some 
multiplication in Young Module)

I use in Engine:
[Ig2_Sphere_Sphere_ScGeom6D(interactionDetectionFactor=1.3),
Ig2_Wall_Sphere_ScGeom(),Ig2_Facet_Sphere_ScGeom6D()],
[Ip2_FrictMat_FrictMat_FrictPhys(),

Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(setCohesionNow=False,setCohesionOnNewContacts=False),

Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(setCohesionNow=True,setCohesionOnNewContacts=False),
],

Pawel

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[Yade-users] [Question #294845]: Multicore Yade

2016-06-03 Thread Pawel
New question #294845 on Yade:
https://answers.launchpad.net/yade/+question/294845

When I start 
yade-1.07.0 -j4 --performance four cores are working, but when I start my 
script it works only on one thread.




# FUNCTIONAL COMPONENTS

# simulation loop -- see presentation for the explanation
O.engines=[
   PyRunner(command='SaveData()',virtPeriod=1./1000),
   ForceResetter(),
   VppNeighbours(),
   VppPressureForce(),
   PyRunner(command='ChangeMask()',iterPeriod=1),
   PyRunner(command='ChangePos()',iterPeriod=1),
   PyRunner(command='ChangePosFoil()',iterPeriod=1),
   PyRunner(command='PreChangePos()',iterPeriod=1),
   PyRunner(command='PressureOn()',iterPeriod=1),
   PyRunner(command='PressureTimeOn()',iterPeriod=1),
 
InsertionSortCollider([Bo1_Sphere_Aabb(aabbEnlargeFactor=1),Bo1_Wall_Aabb(),Bo1_Facet_Aabb()]),
  InteractionLoop(
[Ig2_Sphere_Sphere_ScGeom6D(interactionDetectionFactor=1.2),
Ig2_Wall_Sphere_ScGeom(),Ig2_Facet_Sphere_ScGeom6D()],
[Ip2_FrictMat_FrictMat_FrictPhys(),

Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(setCohesionNow=False,setCohesionOnNewContacts=False),

VppIp2_VppCohFrictMat_VppCohFrictMat_CohFrictPhys(setCohesionNow=True,setCohesionOnNewContacts=False),

VppIp2_CohFrictMat_VppCohFrictMat_CohFrictPhys(setCohesionNow=False,setCohesionOnNewContacts=False)#,
#VppPressure_VppCohFrictMat_VppCohFrictMat()
],
[Law2_ScGeom_FrictPhys_CundallStrack(),
VppLaw2_ScGeom6D_CohFrictPhys_CohesionMoment(
useIncrementalForm=False, #useIncrementalForm is turned 
on as we want plasticity on the contact moments
always_use_moment_law=True, #if we want "rolling" 
friction even if the contact is not cohesive (or cohesion is broken), we will 
have to turn this true somewhere
shearBreaksCohesion = False,
label='cohesiveLaw')]
),
   # apply gravity force to particles
   GravityEngine(gravity=(0,0,-9.81)),
   # damping: numerical dissipation of energy
   NewtonIntegrator(damping=0.2)
]

# set timestep to a fraction of the critical timestep
# the fraction is very small, so that the simulation is not too fast
# and the motion can be observed
O.dt=utils.PWaveTimeStep()

# save the simulation, so that it can be reloaded later, for experimentation
O.saveTmp()
yade.qt.Controller(), yade.qt.View();

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Re: [Yade-users] [Question #294822]: img_rc.py not found

2016-06-03 Thread Pawel
Question #294822 on Yade changed:
https://answers.launchpad.net/yade/+question/294822

Pawel gave more information on the question:
And I trie to compile Yade 1.14.0.

I found thet option USE_QT5 is default switched to off.

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Re: [Yade-users] [Question #294822]: img_rc.py not found

2016-06-03 Thread Pawel
Question #294822 on Yade changed:
https://answers.launchpad.net/yade/+question/294822

Status: Answered => Open

Pawel is still having a problem:
OK how can I change to qt4? if there is any option while compile from
the sources?

I installed two packages but the error is still there.

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[Yade-users] [Question #294822]: img_rc.py not found

2016-06-03 Thread Pawel
New question #294822 on Yade:
https://answers.launchpad.net/yade/+question/294822

When executing the command after compilation make install on  debian i have an 
error 

CMake Error at gui/cmake_install.cmake:88 (file):
  file INSTALL cannot find "/home/pawel/Desktop/yade_vpp/build/img_rc.py".
Call Stack (most recent call first):
  cmake_install.cmake:194 (include)


Makefile:66: recipe for target 'install' failed

Packages
python-pyqt5 or pyqt5-dev-tools are installed

root@debian:/home/pawel/Desktop/yade_vpp/build# dpkg -s python-pyqt5
Package: python-pyqt5
Status: install ok installed
Priority: optional
Section: python
Installed-Size: 13335
Maintainer: Debian Python Modules Team 

Architecture: amd64
Source: pyqt5
Version: 5.3.2+dfsg-3
Depends: python (>= 2.7), python (<< 2.8), libc6 (>= 2.14), libqt5core5a (>= 
5.3.0), libqt5dbus5 (>= 5.0.2), libqt5designer5 (>= 5.0.2), libqt5gui5 (>= 
5.3.0), libqt5help5 (>= 5.3.0), libqt5network5 (>= 5.3.0), libqt5printsupport5 
(>= 5.3.0), libqt5test5 (>= 5.0.2), libqt5widgets5 (>= 5.3.0), libstdc++6 (>= 
4.1.1), qtbase-abi-5-3-2, sip-api-11.1
Suggests: python-pyqt5-dbg
Description: Python bindings for Qt5
 PyQt5 exposes the Qt5 API to Python. This package contains the following
 modules:
  * QtCore
  * QtDBus
  * QtDesigner
  * QtGui
  * QtHelp
  * QtNetwork
  * QtPrintSupport
  * QtTest
  * QtWidgets
Homepage: http://www.riverbankcomputing.co.uk/software/pyqt/

root@debian:/home/pawel/Desktop/yade_vpp/build# dpkg -s pyqt5-dev-tools
Package: pyqt5-dev-tools
Status: install ok installed
Priority: optional
Section: python
Installed-Size: 273
Maintainer: Debian Python Modules Team 

Architecture: amd64
Source: pyqt5
Version: 5.3.2+dfsg-3
Depends: python3, python3-pyqt5 (= 5.3.2+dfsg-3), libc6 (>= 2.14), libgcc1 (>= 
1:4.1.1), libqt5core5a (>= 5.0.2), libqt5xml5 (>= 5.1.0), libstdc++6 (>= 4.1.1)
Description: Development tools for PyQt5
 This package contains various support tools for PyQt5 developers:
  * a user interface compiler (pyuic5)
  * a resource file generator (pyrcc5)
  * a translation string finder (pylupdate5)
Homepage: http://www.riverbankcomputing.co.uk/software/pyqt/


I need yade from sources. 

My system 
 root@debian:/home/pawel/Desktop/yade_vpp/build# cat /etc/debian_version 
8.4




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Re: [Yade-users] [Question #265275]: Inheritance of State Class - add variables

2015-04-16 Thread Pawel
Question #265275 on Yade changed:
https://answers.launchpad.net/yade/+question/265275

Status: Answered => Open

Pawel is still having a problem:
Hi
Thank you for your answers.
I created a class named MyState as:

class MyState: public State{
public:

YADE_CLASS_BASE_DOC_ATTRS(MyState,State,"MyState of a body.",
((bool,isSet,false,,"my isSet"))
);
REGISTER_CLASS_INDEX(MYState,State);
};
REGISTER_SERIALIZABLE(MyState);

Next i made changes to utils.py by add a new MySphere


def
MYsphere(center,radius,dynamic=None,fixed=False,wire=False,color=None,highlight=False,material=-1,mask=1):
b=Body()
b.state = MYState()
b.shape=Sphere(radius=radius,color=color if color else
randomColor(),wire=wire,highlight=highlight)
V=(4./3)*math.pi*radius**3
geomInert=(2./5.)*V*radius**2
_commonBodySetup(b,V,Vector3(geomInert,geomInert,geomInert),material,pos=center,dynamic=dynamic,fixed=fixed)
b.aspherical=False
b.mask=mask
return b

And there is an error ;(
Traceback (most recent call last):
  File "./install/bin/yade-1.09.0", line 178, in runScript
execfile(script,globals())
  File "myscript.py", line 87, in 

O.bodies.append([utils.MYsphere(k*Vz,r,material=green[0],color=green[1])])
..

NameError: global name 'MYState' is not defined

All c++ code compiles without errors.


2015-04-15 23:16 GMT+02:00 Bruno Chareyre <
question265...@answers.launchpad.net>:

> Your question #265275 on Yade changed:
> https://answers.launchpad.net/yade/+question/265275
>
> Bruno Chareyre proposed the following answer:
> Hi,
> You can use conventional C++ inheritance and add the new variables with
> the YADE_CLASS macro:
>
> class MyState: State
> {
>YADE_CLASS(...
>   ((int, myNewVariable,...))
> }
>
> A python code generating a body with this new State  would read:
>
> b=Body()
> b.state=MyState()
>
> --
> If this answers your question, please go to the following page to let us
> know that it is solved:
> https://answers.launchpad.net/yade/+question/265275/+confirm?answer_id=1
>
> If you still need help, you can reply to this email or go to the
> following page to enter your feedback:
> https://answers.launchpad.net/yade/+question/265275
>
> You received this question notification because you asked the question.
>


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[Yade-users] [Question #265275]: Inheritance of State Class - add variables

2015-04-15 Thread Pawel
New question #265275 on Yade:
https://answers.launchpad.net/yade/+question/265275

Hi,
How can I create a class that inheritate State Class and adds some variables 
taht I can use them when creating body objects also in c classes and python? 



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