yade-users team mailing list archive

[Luc Sibille <luc.sibille@xxxxxxxxxxxxxx>]

Václav S a écrit :
> I was planning to implement a trivial gravity engine that would attract
> everything to a point somewhere. Wouldn't that compress better? (except
> that one needs to avoid singularity in the middle). Vaclav

The risk with such a gravity engine is to obtain non homogeneous 
granular assembly, as with isotropic compression. This is the 
consequence of arching effect developed by a granular assembly (even 
with vanishing inter-granular friction angle).
I think the best is to find a process homogeneous "in nature" as the 
compression by growing grains, or maybe, the Janek's 
StaticAttractionEngine (I have never tried).

   Luc

>> Uh, in fact it's too slow, for bigger usage. That's because
>> everything is attracted to everything.
>>
>> But it can be useful in the initial stage of compression, when we
>> want to remove the central void.
>>
>>   
> 
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-- 
Luc Sibille, Université de Nantes - Laboratoire GeM, maître de conférence

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