Hello all,

I downloaded Hyrcan t test it out today and I tried a random file (script attached). I tried a few things that may have to do with it but here is the gist:

* I first made a slope under just over 30 degrees with a material of 30 degrees and got a reasonable result (abut 0.98)

* I then added a very weak layer with only 5kPa cohesion (the program does not seem to support undrained behavior, but since I don't have a piezometric line the total stresses should equal the effective stresses) and got a failre, which I expected

* Finally, I added all the other calculation methods and retried. To my surprise, the FoS is 0.000 in Spencer ad GLE, 0.001 for Janbu and the same as it was for Bishop.

* I tried the same geometry in Slide2 and got FoS values in the order of 0.3ish across the board, so there might be someting ging on.

it seems like you modified the model multiple times back to back. is it possible for you to create a simple model that causes the issue?
this way I can follow the sequence and it's easier for me to debug. thanks.

also I think I know where the problem is coming from. Slide has a filtering process that ignores the surfaces with ma < 0.2 and also FS ~= 0.0 which I did not do. I'll add these filters and release the next version hopefully it will solve the problem.

Hi,

I just made a simpler version of the file. Hopefully that helps. I don't see a good way to search for the slip surface center/radus to test separately, but I'll try to reproduce the 0.000 FoS on my end. The umbers strike me as odd because they imply there's no resisting force (or a numerical error). Either way I hope that helps.