yade-users team mailing list archive

[luc scholtes <lscholtes63@xxxxxxxxx>]

Hi Boon and others,

Actually, I am also interested in fractured rock mass modelling. To
implement a Joint Model in YADE is also a part of my plans for the next
future. I did not have the time for it until now, but it will be interesting
to exchange about the possible strategies to do it efficiently. As you
noticed, the key point is to identified joint interactions before starting
the simulation, but, once this has been done, I think that writing the
corresponding constitutive law (assigning the joint plane orientation to the
contact interaction and providing characteristic features such as dilation
as a function of shear displacement) would not be a big problem (especially
with Anton and vaclav works on RockPM and ConcretePM).

I hope to have some time to work on it soon

Cheers

  Luc


2009/11/14 boon chiaweng <booncw@xxxxxxxxxxx>

>  Thanks for helping.  The constitutive law is relevant but not entirely.
> An example of a problem that I would like to look at is wedge stability of
> slopes.  E.g., create two joint planes intersecting the corner of a box, and
> the wedge will slide.
> I'm not looking at brittle fracture of bonded material, but would like to
> know how to insert a joint plane before simulation.  So far, I've only
> stumbled across particle generation in YADE.
>
>
> Yours sincerely,
>
> Boon
>
> ------------------------------
> From: gladky.anton@xxxxxxxxx
> Date: Fri, 13 Nov 2009 14:52:07 +0100
> To: yade-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Yade-users] How to create a rock joint?
>
>
> See RockPM constitutive law
> ______________________________
>
>
> Anton Gladkyy
>
>
> 2009/11/13 Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx>
>
> I don't think anything like this is implemented yet. It is difficult for me
> to give advices without a precise explanation of the modeling you want. If
> you need the list of interactions intersecting a plane, it should not be too
> hard.
> Something like :
>
> FOREACH (interaction)
> {
>   if (interaction->body1 on one side && interaction->body2 on the other
> side)
>    intersected_list.push_back(interaction)
>   //or simply
>    modify_properties(interaction)
> }
>
> I guess you don't need that at each iteration, so performance is not an
> issue.
>
>
> Bruno
>
> boon chiaweng a écrit :
>
> I am planning to use YADE for rock engineering.  The joint i was refering
> to is a joint plane.  I would initially like to have a block of rock mass.
>  And by specifiying the dip direction and dip angle of the joint planes, the
> block of rock mass will be cut/intersected.  Then I will have to identify
> the polyhedral blocks formed from the joint planes.    Does anyone know how
> to do this? Or has done it?
>   Yours sincerely,
>  Boon
>
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