Re: [Yade-users] [Question #295158]: Can we create a rigid body using only particles, rather than importing a gts surface.

[A Dinesh]

Question #295158 on Yade changed:
https://answers.launchpad.net/yade/+question/295158

Status: Answered => Solved

A Dinesh confirmed that the question is solved:
Thanks Anton Gladky, that solved my question.

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

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp

Re: [Yade-users] [Question #295158]: Can we create a rigid body using only particles, rather than importing a gts surface.

[Anton Gladky]

Question #295158 on Yade changed:
https://answers.launchpad.net/yade/+question/295158

Anton Gladky proposed the following answer:
2016-06-13 19:22 GMT+02:00 A Dinesh :
> As I am trying to write my own code to implement DEM, please suggest me which 
> visualization tool kit should I use to visualize the spheres, Box, and rigid 
> bodies as they move with time? Thank you sir.

That is what that I would strongly not recommend to do. There are many
open source DEM codes, which you can use as a basis, if YADE is not
suitable for your needs (just google it). Many thousands of man-hours were
spent by many people polishing programs, trying to do them bug-free.
Writing the new code from the scratch is not always a good idea.

Regards

Anton

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

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp

Re: [Yade-users] [Question #295158]: Can we create a rigid body using only particles, rather than importing a gts surface.

[Marcus Moravia]

Question #295158 on Yade changed:
https://answers.launchpad.net/yade/+question/295158

Marcus Moravia proposed the following answer:
Dear Dinesh,

I suggest open a new topic for new questions (https://yade-
dem.org/wiki/Howtoask). In spite of that, I answered your questions
below.

1) "As Jérôme Duriez explained that we could create a model using spheres. 
After such creation, should we apply the force law between sand particles and 
hopper's spherical particles?"
You should handle sphere+sphere collisions. Thus, you will need to set 
collision geometry, collision physics and contact law to apply forces.

2) "This is another question:
As I am trying to write my own code to implement DEM, please suggest me which 
visualization tool kit should I use to visualize the spheres, Box, and rigid 
bodies as they move with time? Thank you sir."
You may use the Primary View directly from Yade.

Cheers,
Marcus.

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

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp

Re: [Yade-users] [Question #295158]: Can we create a rigid body using only particles, rather than importing a gts surface.

[A Dinesh]

Question #295158 on Yade changed:
https://answers.launchpad.net/yade/+question/295158

A Dinesh posted a new comment:
Sir, I want to create a hopper. Then visualize the sand falling  through
it.  In YADE hopper is made of facets, and the force interaction law,
insertion sort collider, and many things are different  if we create the
same hopper with particles.

1) As jérôme Duriez  explained that we could create a model using
spheres. After such creation, Should we apply the force law between sand
particles and hopper's  spherical particles?


This is another question:
As I am trying to write my own code to implement DEM, please suggest me which 
visualization tool kit should I use to visualize the spheres, Box, and rigid 
bodies as they move with time? Thank you sir.

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

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp

Re: [Yade-users] [Question #295158]: Can we create a rigid body using only particles, rather than importing a gts surface.

[Bruno Chareyre]

Question #295158 on Yade changed:
https://answers.launchpad.net/yade/+question/295158

Bruno Chareyre proposed the following answer:
> A ball made up of spheres, bouncing in a box, which is also made of
spheres. Bullet made up of spheres hitting a concrete wall composed of spheres.

Yes of course, you can dot that. Why not?
Could you clarify your question?
Bruno

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

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp

Re: [Yade-users] [Question #295158]: Can we create a rigid body using only particles, rather than importing a gts surface.

[Jérôme Duriez]

Question #295158 on Yade changed:
https://answers.launchpad.net/yade/+question/295158

Status: Open => Answered

Jérôme Duriez proposed the following answer:
As for your first example, getting a box made of spheres should be quite easy 
using "predicates", see for instance
https://yade-dem.org/doc/user.html#boolean-operations-on-predicates
and the previous paragraphs.

This predicate method should allow you to get particles assemblies
conforming a wide variety of shapes and address hopefully any situation
you want.

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

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp

Re: [Yade-users] [Question #295158]: Can we create a rigid body using only particles, rather than importing a gts surface.

[A Dinesh]

Question #295158 on Yade changed:
https://answers.launchpad.net/yade/+question/295158

Status: Answered => Open

A Dinesh is still having a problem:
A ball made up of spheres, bouncing in a box, which is also made of
spheres.
Bullet made up of spheres hitting a concrete wall composed of spheres.
On Sat, 11 Jun 2016 at 3:13 AM, Jérôme Duriez <
question295...@answers.launchpad.net> wrote:

> Your question #295158 on Yade changed:
> https://answers.launchpad.net/yade/+question/295158
>
> Jérôme Duriez requested more information:
> What kind of specific examples do you have in mind ?
>
> --
> To answer this request for more information, you can either reply to
> this email or enter your reply at the following page:
> https://answers.launchpad.net/yade/+question/295158
>
> You received this question notification because you asked the question.
>

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

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp

Re: [Yade-users] [Question #295158]: Can we create a rigid body using only particles, rather than importing a gts surface.

[Jérôme Duriez]

Question #295158 on Yade changed:
https://answers.launchpad.net/yade/+question/295158

Jérôme Duriez requested more information:
What kind of specific examples do you have in mind ?

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

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp

Re: [Yade-users] [Question #295158]: Can we create a rigid body using only particles, rather than importing a gts surface.

[A Dinesh]

Question #295158 on Yade changed:
https://answers.launchpad.net/yade/+question/295158

A Dinesh posted a new comment:
Thank you sir,

Actually my concern is, in almost every example of yade, every rigid body is 
modelled only with surfaces. Can we redo all those examples using only 
particles. Do we get efficient results doing so.  
What are the challenges in doing so?

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

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp

Re: [Yade-users] [Question #295158]: Can we create a rigid body using only particles, rather than importing a gts surface.

[Jérôme Duriez]

Question #295158 on Yade changed:
https://answers.launchpad.net/yade/+question/295158

Status: Open => Answered

Jérôme Duriez proposed the following answer:
As said in the US: yes, we can.

You can play with the dynamic attribute [1] of spherical particles so
that they won't move, and assemble them in the shape of your rigid body
(that will not move in addition to be rigid)

Also, you can use clumps that are rigid particles made of distinct
particles. The clumps as a whole can move. Search for "clumps" in the
documentation (see [2] for a very first example) and the examples.

In case I did not really answer your question, please try to be more
specific.

Jerome


[1]: https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.Body.dynamic
[2]: 
https://yade-dem.org/doc/yade.wrapper.html?highlight=clump#yade.wrapper.BodyContainer.addToClump

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

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp

[Yade-users] [Question #295158]: Can we create a rigid body using only particles, rather than importing a gts surface.

[A Dinesh]

New question #295158 on Yade:
https://answers.launchpad.net/yade/+question/295158

I am implementing Discrete element method using pure python. Here I would like 
to know whether we can create bodies only with particles rather than facets or 
planes. Because I want to model my complete simulation using particles. If  
some software did this then kindly refer me to such. If any paer describes this 
then kindly refer such a paper. Thank you.

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

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp