Memory allocation, System freezes

PFC
1

Dear Sir,
I am attempting to simulate the retaining wall soil system. I am trying to validate a problem in PFC 3D and was considering the dimensions as per the paper. I have attached the paper and data file for reference.
I am still working on the model, although it hangs as soon as I run line number 53.

For the foundation part, around 30,000 spherical balls were generated, and after that, when I applied the ‘model cycle 1000 calm 100’ command, the system hung, and
then I had to shut down the system. The paper which I have attached also used PFC software.

Is it not possible to simulate such a large number of balls? Or is there a way to allocate memory to PFC so that my system does not hang?

Please help me out.
soil_wall_7_9_22.dat (5.2 KB)
9780784482810.034.pdf (719.3 KB)

2

Hello.
Can anyone help me out here?

3

Hello Prerna,

30k balls is certainly a reasonable number of balls to simulate quickly. I will take a look at your data file and see what may be the problem. Could you please let me know which version of PFC you are using?

Thanks,
Derrick

4

In any case, the problem resides in the contact cmat proximity command. You are giving the proximity a value that is 20x more than the largest radius of the balls. Therefore millions of contacts are being created between balls that are within a contact distance that you specified with this command.

I suggest reducing the contact proximity to a much smaller value.

– Derrick