yade-users team mailing list archive

[chiara modenese <c.modenese@xxxxxxxxx>]

On 19 April 2010 10:06, Jerome Duriez <jerome.duriez@xxxxxxxxxxxxxxx> wrote:

>
>
> chiara modenese a écrit :
>
>  Hi Jerome,
>> say that you want a constant normal force at the interaction and meanwhile
>> you apply a shear force. If you do not apply damping (hereby in the normal
>> direction) your bodies would bounce and the normal force would not be
>> constant..
>>
> Ok. I was maybe too categoric but I had the feeling by reading your mail
> that it was only damping which let you obtain an equilibrium solution (which
> would be not possible physically without damping). It seems I misunderstood.
>
Yes, you reach the equilibrium anyway, it is just that without damping you
don't "stay" but you go on oscillating.

> So the best is what Vaclav adviced : set both bodies as non-dynamic. You
> will then control directly all the features (relative displacement and
> consequently forces) of the interaction.

Oh yes, I think it is best to force displacements than apply forces in this
case. I try.

>
>
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