stress and forces

Asked by Jesion Delgado

hello

I am new to YADE and I'm trying to simulate a rock fall, and I have the complete modeling and the rock is falling, however when using bodyStressTensors () command, the tension that is generated is zero unciamente Matrix3 (0,0,0 , 0,0,0, 0,0,0), but when the rock is stabilized or has little movement, this also happens to the forces. I would like to know a way to obetener efforts and forces model.

PS: However the model generates me speeds, rotations and mass.

Question information

Language:
English Edit question
Status:
Answered
For:
Yade Edit question
Assignee:
No assignee Edit question
Last query:
Last reply:
Revision history for this message
Jan Stránský (honzik) said :
#1

Hi Jesion,

I am new to YADE

welcome :-)

when asking a question, please put to the message also a minimal working
example reproducing your problem. From a short script, it should be easier
to guess where your problem is.

Also when asking about forces, please be a bit more specific what kind of
forces you want (forces applied on bodies, interaction forces, unbalanced
inertial forces, ...).

Thanks
Jan

PS: please also try to use English in all the message :-) or at least do
not misprint the non-English words ;-)

2015-07-18 3:41 GMT+02:00 Jesion Delgado <
<email address hidden>>:

> New question #269368 on Yade:
> https://answers.launchpad.net/yade/+question/269368
>
> hello
>
> I am new to YADE and I'm trying to simulate a rock fall, and I have the
> complete modeling and the rock is falling, however when using
> bodyStressTensors () command, the tension that is generated is zero
> unciamente Matrix3 (0,0,0 , 0,0,0, 0,0,0), but when the rock is stabilized
> or has little movement, this also happens to the forces. I would like to
> know a way to obetener efforts and forces model.
>
> PS: However the model generates me speeds, rotations and mass.
>
> --
> You received this question notification because you are a member of
> yade-users, which is an answer contact for Yade.
>
> _______________________________________________
> Mailing list: https://launchpad.net/~yade-users
> Post to : <email address hidden>
> Unsubscribe : https://launchpad.net/~yade-users
> More help : https://help.launchpad.net/ListHelp
>

Revision history for this message
Jérôme Duriez (jduriez) said :
#2

From what I understood from your question, let me add that you can use, for example:

- O.forces.f(id) If you want to access the resulting force on a body with id "id". See https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.ForceContainer.f
(O.forces is a "ForceContainer" python object)

- or e.g. cont.phys.normalForce if you want to access the normal component of the contact force for a contact named "cont" (provided that the "phys" of this contact is of "NormPhys" - or derived - type. Which is the case for 99.9 % of Yade simulations)

Jerome

Can you help with this problem?

Provide an answer of your own, or ask Jesion Delgado for more information if necessary.

To post a message you must log in.