On 7 May 2010 16:40, Bruno Chareyre wrote:
>
>
>> I tried the sample example with the two balls and the time step estimated
>> by PWave. I attach the figure.
>>
> Mmmm... It is not "that" better. I expected better matching with corrected
> kinetic (as in the simple mass-spring test).
"Shifting"
On 7 May 2010 16:49, Bruno Chareyre wrote:
>
>
>> So, you need in fact to __substract__ accel*dt/2, and you will get at time
>> "t" the energy of time "t-dt". Sorry if I wrote something different in
>> previous mails.
>>
> Not sure it was a good idea, since nobody will understand why kineticEnerg
So, you need in fact to __substract__ accel*dt/2, and you will get at
time "t" the energy of time "t-dt". Sorry if I wrote something
different in previous mails.
Not sure it was a good idea, since nobody will understand why
kineticEnergy computed a time t refers to time t-dt.
The best is to
On 7 May 2010 16:40, Bruno Chareyre wrote:
>
>
>> I tried the sample example with the two balls and the time step estimated
>> by PWave. I attach the figure.
>>
> Mmmm... It is not "that" better. I expected better matching with corrected
> kinetic (as in the simple mass-spring test).
>
>
> Now I
I tried the sample example with the two balls and the time step
estimated by PWave. I attach the figure.
Mmmm... It is not "that" better. I expected better matching with
corrected kinetic (as in the simple mass-spring test).
Now I suppose that if the kinetic energy is computed correctly (is
On 7 May 2010 15:51, chiara modenese wrote:
>
>
> On 7 May 2010 13:31, Bruno Chareyre wrote:
>
>>
>>> Ok, can I change something in Shop for the dt/2 shift or should I save
>>> velocities and accelerations and then interpolate?
>>>
>>>
>> You can change in shop.
>>
> I changed in shop the kineti
On 7 May 2010 13:31, Bruno Chareyre wrote:
>
>> Ok, can I change something in Shop for the dt/2 shift or should I save
>> velocities and accelerations and then interpolate?
>>
>>
> You can change in shop.
>
I changed in shop the kinetic as
ret+=.5*(b->state->mass*(b->state->vel+b->state->accel*d
>
> I also added
> https://www.yade-dem.org/sphinx/prog.html#local-documentation with
> instructions how to generate documentation locally.
>
When I was generating the local documentation, I get an error:
INFO yade.Omega /home/sega/work/yade/trunk/core/Omega.cpp:329
saveSimulation: Saving fi
Ok, can I change something in Shop for the dt/2 shift or should I save
velocities and accelerations and then interpolate?
You can change in shop.
Another note : your remark on different dt for different problems is
correct. PWave and GSTS both consider a dense packing.
If you have problems
On 7 May 2010 12:08, Bruno Chareyre wrote:
>
> Perhaps I guess that dealing with _quasi-static conditions_, energy
>> considerations become superfluous (that is maybe why nobody here has
>> approached the problem?). On the other hand, if the problem is _dynamic_ I
>> think they matter.
>>
>> Is
Perhaps I guess that dealing with _quasi-static conditions_, energy
considerations become superfluous (that is maybe why nobody here has
approached the problem?). On the other hand, if the problem is
_dynamic_ I think they matter.
Is not supefluous under quasistatic conditions, and I approac
I am only applying an initial velocity to one particle, hence the
total energy of the system is only given by (kinetic + potential elastic).
Look at the two attached figures. The first one (dt_crit) is the
result obtained using the critical time step computed by Pwave in
Yade. The second one
> Vaclav, I added doc in bzr2207.
> Please, review it and tell me if I done some wrong (I mean format, etc...).
Hi Sega, great, thanks! It's almost fine, I fixed syntax, no problem.
I already observed different behavior for syntax in pure python and c++
docstrings, so I put the question on sphinx
> Sega, it should be documented (in py/_utils.cpp), at the end. Please
> name arguments (py::arg("name")) and also put formuas that are used into
> the docstring (either in $...$ or ".. math::"), please.
>
Hello!
Vaclav, I added doc in bzr2207.
Please, review it and tell me if I done some wrong
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