apply force

Hello,
from your question, it is not very clear for me what you want to do.. could
you please be more specific and maybe give an example desired result? it
will help us to help you :-)

a repulsive force between particles is activeted as soon as there is an
overlap, exactly for the reason "to limit movenemt and contacts of
particles".. So one way is to increase stiffness of the material. You can
also apply some boundaries (see e.g. [1]) to limit movement.

You can also apply force directly on particles [2].

cheers
Jan

[1]
http://bazaar.launchpad.net/~yade-pkg/yade/git-trunk/view/head:/examples/funnel.py
[2]
https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.ForceContainer.addF

2013/7/24 pingyang.1019@163.com <email address hidden>

> New question #232935 on Yade:
> https://answers.launchpad.net/yade/+question/232935
>
> Hello teachers!
>
> How to apply force between the particles? I want to limit movement and
> contacts of particles. How to do ?
>
> Thank you!
>
> --
> 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
>

Thank you teacher
     I want to simulation spherical particles are not in contact with the elastic stage. So how to do it ? Is it feasible to apply force between the particles?

At 2013-07-24 12:26:17,"Jan Stránský" <email address hidden> wrote:
>Question #232935 on Yade changed:
>https://answers.launchpad.net/yade/+question/232935
>
> Status: Open => Answered
>
>Jan Stránský proposed the following answer:
>Hello,
>from your question, it is not very clear for me what you want to do.. could
>you please be more specific and maybe give an example desired result? it
>will help us to help you :-)
>
>a repulsive force between particles is activeted as soon as there is an
>overlap, exactly for the reason "to limit movenemt and contacts of
>particles".. So one way is to increase stiffness of the material. You can
>also apply some boundaries (see e.g. [1]) to limit movement.
>
>You can also apply force directly on particles [2].
>
>cheers
>Jan
>
>[1]
>http://bazaar.launchpad.net/~yade-pkg/yade/git-trunk/view/head:/examples/funnel.py
>[2]
>https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.ForceContainer.addF
>
>
>
>2013/7/24 pingyang.1019@163.com <email address hidden>
>
>> New question #232935 on Yade:
>> https://answers.launchpad.net/yade/+question/232935
>>
>> Hello teachers!
>>
>> How to apply force between the particles? I want to limit movement and
>> contacts of particles. How to do ?
>>
>> Thank you!
>>
>> --
>> 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
>>
>
>--
>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

Hello,

I am sorry, but your explanation did not make it any more clear to me :-)
what do you mean by "elastic stage"? To help you, it would be really nice
to have an idea what and why you want to do, so maybe you can try to
explain it in more than one sentence :-)

It is feasible to apply force directly to particles, so if you know what
force you would apply between particles, you can apply opposite forces to
individual particles.

To apply forces between particles not to be in contact "much" is the task
of interactions, that are created automatically.

cheers
Jan

2013/7/26 pingyang.1019@163.com <email address hidden>

> Question #232935 on Yade changed:
> https://answers.launchpad.net/yade/+question/232935
>
> Status: Answered => Open
>
> pingyang.1019@163.com is still having a problem:
> Thank you teacher
> I want to simulation spherical particles are not in contact with the
> elastic stage. So how to do it ? Is it feasible to apply force between the
> particles?
>
>
>
>
>
> At 2013-07-24 12:26:17,"Jan Stránský" <
> <email address hidden>> wrote:
> >Question #232935 on Yade changed:
> >https://answers.launchpad.net/yade/+question/232935
> >
> > Status: Open => Answered
> >
> >Jan Stránský proposed the following answer:
> >Hello,
> >from your question, it is not very clear for me what you want to do..
> could
> >you please be more specific and maybe give an example desired result? it
> >will help us to help you :-)
> >
> >a repulsive force between particles is activeted as soon as there is an
> >overlap, exactly for the reason "to limit movenemt and contacts of
> >particles".. So one way is to increase stiffness of the material. You can
> >also apply some boundaries (see e.g. [1]) to limit movement.
> >
> >You can also apply force directly on particles [2].
> >
> >cheers
> >Jan
> >
> >[1]
> >
> http://bazaar.launchpad.net/~yade-pkg/yade/git-trunk/view/head:/examples/funnel.py
> >[2]
> >
> https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.ForceContainer.addF
> >
> >
> >
> >2013/7/24 pingyang.1019@163.com <email address hidden>
> >
> >> New question #232935 on Yade:
> >> https://answers.launchpad.net/yade/+question/232935
> >>
> >> Hello teachers!
> >>
> >> How to apply force between the particles? I want to limit movement
> and
> >> contacts of particles. How to do ?
> >>
> >> Thank you!
> >>
> >> --
> >> 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
> >>
> >
> >--
> >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
>
> --
> 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
>

Hello !
    I want to simulation Initially particles do not touch and then particles touch when the force between the particles reaches a certain value. I do not know how to do it .

At 2013-07-26 14:11:35,"Jan Stránský" <email address hidden> wrote:
>Question #232935 on Yade changed:
>https://answers.launchpad.net/yade/+question/232935
>
> Status: Open => Answered
>
>Jan Stránský proposed the following answer:
>Hello,
>
>I am sorry, but your explanation did not make it any more clear to me :-)
>what do you mean by "elastic stage"? To help you, it would be really nice
>to have an idea what and why you want to do, so maybe you can try to
>explain it in more than one sentence :-)
>
>It is feasible to apply force directly to particles, so if you know what
>force you would apply between particles, you can apply opposite forces to
>individual particles.
>
>To apply forces between particles not to be in contact "much" is the task
>of interactions, that are created automatically.
>
>cheers
>Jan
>
>
>
>2013/7/26 pingyang.1019@163.com <email address hidden>
>
>> Question #232935 on Yade changed:
>> https://answers.launchpad.net/yade/+question/232935
>>
>> Status: Answered => Open
>>
>> pingyang.1019@163.com is still having a problem:
>> Thank you teacher
>> I want to simulation spherical particles are not in contact with the
>> elastic stage. So how to do it ? Is it feasible to apply force between the
>> particles?
>>
>>
>>
>>
>>
>> At 2013-07-24 12:26:17,"Jan Stránský" <
>> <email address hidden>> wrote:
>> >Question #232935 on Yade changed:
>> >https://answers.launchpad.net/yade/+question/232935
>> >
>> > Status: Open => Answered
>> >
>> >Jan Stránský proposed the following answer:
>> >Hello,
>> >from your question, it is not very clear for me what you want to do..
>> could
>> >you please be more specific and maybe give an example desired result? it
>> >will help us to help you :-)
>> >
>> >a repulsive force between particles is activeted as soon as there is an
>> >overlap, exactly for the reason "to limit movenemt and contacts of
>> >particles".. So one way is to increase stiffness of the material. You can
>> >also apply some boundaries (see e.g. [1]) to limit movement.
>> >
>> >You can also apply force directly on particles [2].
>> >
>> >cheers
>> >Jan
>> >
>> >[1]
>> >
>> http://bazaar.launchpad.net/~yade-pkg/yade/git-trunk/view/head:/examples/funnel.py
>> >[2]
>> >
>> https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.ForceContainer.addF
>> >
>> >
>> >
>> >2013/7/24 pingyang.1019@163.com <email address hidden>
>> >
>> >> New question #232935 on Yade:
>> >> https://answers.launchpad.net/yade/+question/232935
>> >>
>> >> Hello teachers!
>> >>
>> >> How to apply force between the particles? I want to limit movement
>> and
>> >> contacts of particles. How to do ?
>> >>
>> >> Thank you!
>> >>
>> >> --
>> >> 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
>> >>
>> >
>> >--
>> >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
>>
>> --
>> 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
>>
>
>--
>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

Dear pingyang, I'm marking your question invalid.
Feel free to ask well-posed questions.