yade-users team mailing list archive

[kan <nicessgg@xxxxxxxxx>]

Hi, Dear All,

I am just losting myself in understanding the contact detecting method in a
DEM.
could you please give me some instruction or explaination about what is the
contact detecting method used in YADE?
It is easy to detect if two contacted particles becomes non-contacted again
by check the distance between their center with their radius
sum(radius1+radius2, assume both of them are sphere) because they know each
other when they are in contact an have stored their neighbors relationship
for each other. But, how do you know whether two will change from
non-contacted conditions to contancted condition----because they do not know
each other before then come to contact, do not tell me that you check each
pair in all of the particle---it works but the time cost is toooooo
expensive .

Thanks.
Regards.

Kan

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