Calibrating Plaxis with DeepSoil

RE: Calibrating Plaxis with DeepSoil

Hijratullah Niazi — Fri, 26 Feb 2021 18:46:18 GMT

Dear Stefanos,

I discoverd that both DeepSoil and Shake have almost same material graph. However, graph from Plaxis is far from these two programs. I have adjusted parameters to be closer and similar to DeepSoil, I am not sure if parameters I use in Plaxis are realistic, this applis just to Small strains.

This graph is close enough to DeepSoil and Shake. I am not very sure if there is another way to calibrate material property in Plaxis.

I would say these material properties in Plaxis seems ok, but not close to DeepSoil and Shake.

DeepSoil and Shake programs are suggeste by Micha van der Sloot in one of his webinars. If there is another software or another way to calibrate Plaxis model, I would be very happe to know it.

RE: Calibrating Plaxis with DeepSoil

Hijratullah Niazi — Fri, 26 Feb 2021 14:09:03 GMT

Dear Stefanos,

Yes, I saw this table, and I was checking thses values with 14 Free Vibration and Earthquake, I am lost why input G0ref is not the same as calculated

Since I was not able to find match between Plaxis and DeepSoil, I am trying to find values from Plaxis graph to input in DeepSoil.

I am very exited to see if that will work out.

RE: Calibrating Plaxis with DeepSoil

Stefanos Papavasileiou — Fri, 26 Feb 2021 14:04:02 GMT

Dear Hijratullah,

That is rather odd because on Material Models manual there are chapters by constitutive model, e.g. for Handerning Soil with small-strain stiffness:

Can you see those?

RE: Calibrating Plaxis with DeepSoil

Hijratullah Niazi — Fri, 26 Feb 2021 13:54:21 GMT

Dear Stefanos,

Agree, I have reviewed the entire document, cannot find single table where material parameters are defined.

Is there another document that I have not seen.

RE: Calibrating Plaxis with DeepSoil

Stefanos Papavasileiou — Fri, 26 Feb 2021 13:29:24 GMT

Dear Hijatullah,

Concerning the material definitions, I would recommend checking our Reference and Material Models manual.

I agree that typically different software may define similar parameters in a different way, so I would first get all definitions per software at hand and then try to convert them in the calibration.