stresses on CAD geometry

raguelmoon's picture
Submitted by raguelmoon on Mon, 09/19/2011 - 13:21

Hi Christoph,
I found that LIGGGHTS can not dump stresses on the CAD cylindrical wall properly when the ratio of the diameter of beads to the diameter of cylinder is bigger than 0.02; however, below this ratio, the stress profile is good. But, using this low ratio is computationally expensive. Is there another way to do so?

Thanks,
Ram

ckloss's picture

ckloss | Mon, 09/19/2011 - 13:59

what do you mean with "can not dump stresses on the CAD cylindrical wall properly"?
A problem with the code, or with statistics?

Christoph

raguelmoon's picture

raguelmoon | Mon, 09/19/2011 - 14:41

statistics- there are huge fluctuations in curves when that ratio is high, however, finer curve is obtained with lower ratios

Ram

ckloss's picture

ckloss | Mon, 09/19/2011 - 14:52

a periodic BC of type "wegde" would be a solution which would give a speed-up of ~5-10 for this.
but this is quite tricky - someone with sounds knowledge of the code would have to code this

Christoph