Search found 21 matches

by sebi_magi
Mon Jul 24, 2023 10:32 pm
Forum: Property
Topic: how to get backbone curve from PDMY material
Replies: 7
Views: 3923

Re: how to get backbone curve from PDMY material

Dear STKO Team,

I could record the tangent with the custom element results section, thank you. I could not record the backbone curve, maybe because it is not a tensor but rather two vectors relating shear strain and Gs. In any case the backbone curve is always the same for a given element, so I ...
by sebi_magi
Mon Jul 17, 2023 5:38 pm
Forum: Property
Topic: how to get backbone curve from PDMY material
Replies: 7
Views: 3923

Re: how to get backbone curve from PDMY material

Dear STKO team,

Is it possible to extract backbone curves / tangent matrix with the .mpco recorder? I tried without success. It is indeed possible with the custom command and classic OpenSees recorder, but exploring the .hdf5 output files would be better for me.

Kind regards,

Sebastian
by sebi_magi
Fri Jun 23, 2023 6:52 pm
Forum: Analysis
Topic: Nothing to regenerate
Replies: 17
Views: 12462

Re: Nothing to regenerate

Dear STKO Team,

Was the issue with the PDMY03 model partition solved? I am using this model in STKO. My model converges using 1 to 4 processors, but using more than that causes the model to crash at different stages.


Kind regards.
by sebi_magi
Sat May 13, 2023 2:58 pm
Forum: Analysis
Topic: Force from reaction generates unwanted high accelerations in elastoplastic models
Replies: 4
Views: 1754

Re: Force from reaction generates unwanted high accelerations in elastoplastic models

Dear STKO Team

I solved this issue already using much simpler boundary conditions.

I have another question

I am using the RandomizedMaterialWrapper to map soil variabialities on the PDMY02 model and using setParameter command with a randonmaterial table to update permeabilities and match void ...
by sebi_magi
Wed May 10, 2023 3:36 am
Forum: Analysis
Topic: Force from reaction generates unwanted high accelerations in elastoplastic models
Replies: 4
Views: 1754

Re: Force from reaction generates unwanted high accelerations in elastoplastic models

I did not make myself clear enough. There are no convergence issues with the model I sent you. Please look at the .mpco file recorder_full. The first step of the dynamic analysis (stage 3, step 110) exhibits a very large unwanted acceleration, that contaminates the real dynamic load I imposed, which ...
by sebi_magi
Tue May 02, 2023 5:14 am
Forum: Analysis
Topic: Force from reaction generates unwanted high accelerations in elastoplastic models
Replies: 4
Views: 1754

Force from reaction generates unwanted high accelerations in elastoplastic models

Dear STKO Team,

I'm trying to implement a model very similar to what you did in the SSI Absorbing boundaries webinar:

https://www.youtube.com/watch?v=OGII3a0gQqI&lc=UgxjwesYBOlQmavuuKl4AaABAg.9o40HQGLF0w9o7CFo_yJmP

The differences are that the geometry is in 2D, and I am not using viscous damping ...
by sebi_magi
Thu Oct 20, 2022 8:39 pm
Forum: Property
Topic: Map 3D Soil Variabilities into STKO soil model
Replies: 21
Views: 8506

Re: Map 3D Soil Variabilities into STKO soil model

Dear STKO Team,


Do you have an estimated date for the update of the ASDA Absorbing Boundary?

Kind regards,

Sebastián
by sebi_magi
Tue Aug 02, 2022 2:02 am
Forum: Property
Topic: Map 3D Soil Variabilities into STKO soil model
Replies: 21
Views: 8506

Re: Map 3D Soil Variabilities into STKO soil model

Looking forward to it :) in the meantime I can try other boundary conditions.


Kind regards.
by sebi_magi
Sat Jul 23, 2022 4:22 am
Forum: Property
Topic: Map 3D Soil Variabilities into STKO soil model
Replies: 21
Views: 8506

Re: Map 3D Soil Variabilities into STKO soil model

Dear STKO Team,

Thank you for taking into account my suggestion :).

Here is the file .scd and .rmt files for a PDMY model with a ricker wavelet. I used a cfactor of 3 so the acceleration input is 3g. I noticed undesired amplifications occur in the boundaries with such a big input, and they are ...
by sebi_magi
Mon Jul 18, 2022 3:10 am
Forum: Property
Topic: Map 3D Soil Variabilities into STKO soil model
Replies: 21
Views: 8506

Re: Map 3D Soil Variabilities into STKO soil model

That was definitely not intuitive :shock: It worked well though, thank you very much for all your answers :)

For the time being I won't try more complex models but rather optimize what I have done, but I have some last questions.

i) When you said I could update G for each time step so absorbing ...