Search found 37 matches

by jpereirasan
Fri Mar 28, 2025 12:35 am
Forum: Analysis
Topic: How to improve analysis time.
Replies: 1
Views: 271

How to improve analysis time.

Hi Stko Team.
I'm running a Slope Model with SSPQuadUP elementes and a Lysmer Kuhlemayer dashpot. (Following the OpenSees wiki example)

The model is taking a lot of time to run even in powerfull computers. ( 1 hour to calculate just 1%)

Can you please check the Analysis command or can you give ...
by jpereirasan
Wed Mar 05, 2025 1:35 am
Forum: OpenSees SP
Topic: Free Field Columns Implementation
Replies: 1
Views: 2002

Free Field Columns Implementation

Dear Stko Team. i would like to adress about how to implement free field columns in a Dynamic Slope Model.
I've seen in your examples that you model it separate from the soil body, but in the OpenSeesWiki example, they model it right next to the soil domain.
What is the difference?
by jpereirasan
Sun Feb 23, 2025 4:07 pm
Forum: Analysis
Topic: Soil column don't Run
Replies: 2
Views: 322

Re: Soil column don't Run

Can you please check the model?
by jpereirasan
Fri Feb 14, 2025 8:52 pm
Forum: Analysis
Topic: Soil column don't Run
Replies: 2
Views: 322

Soil column don't Run

Good morning STKO team.
I am modeling a soil column with SSPQuadUP elements, following the examples in the OpenSees wiki.
The objective is to perform an effective site response study.
I have incorporated everything that the examples indicate, but the model does not start calculating the ...
by jpereirasan
Thu Dec 19, 2024 2:47 am
Forum: OpenSees SP
Topic: Uniform Excitation/ MultipleSupport Pattern
Replies: 7
Views: 3444

Re: Uniform Excitation/ MultipleSupport Pattern

Hi STKO Team. Thanks for your reply.

I have been working on post-processing the results, as I told you using UniformExcitation.
But the results do not follow as expected even using the same properties, elements, input accelerations and analysis steps as the reference.
I am adding the displacement ...
by jpereirasan
Tue Dec 10, 2024 1:05 pm
Forum: OpenSees SP
Topic: Uniform Excitation/ MultipleSupport Pattern
Replies: 7
Views: 3444

Re: Uniform Excitation/ MultipleSupport Pattern

Thank you very much for your answers.
About how to process the data obtained with UniformExcitation.
I understand that
For the displacements I must integrate twice the accelerations time series I am using as input and then I must add it to the displacement recorded in the node I want to calculate.
I ...
by jpereirasan
Wed Dec 04, 2024 3:05 am
Forum: OpenSees SP
Topic: Uniform Excitation/ MultipleSupport Pattern
Replies: 7
Views: 3444

Re: Uniform Excitation/ MultipleSupport Pattern

Thank you very much for your answers, they are very helpful.
I would like if you can help me with these doubts.

1)If I want to model a container whose edges do not move, but I want to apply a series of accelerations in the base I can do it with MultipleSupport Pattern? or this implies that those ...
by jpereirasan
Mon Dec 02, 2024 11:08 pm
Forum: OpenSees SP
Topic: Uniform Excitation/ MultipleSupport Pattern
Replies: 7
Views: 3444

Uniform Excitation/ MultipleSupport Pattern

Good morning STKO team.

In an excel spreadsheet, how can I get the total displacement on a node that was excited using UniformExcitation? I have to add all the displacements of the node and the total corresponds to the displacement?

If I am using the groundmotion command and multiplesupport ...
by jpereirasan
Tue Nov 19, 2024 3:55 am
Forum: Analysis
Topic: Soil-Pile Don't Run
Replies: 1
Views: 252

Soil-Pile Don't Run

Hello STKO team. I am modeling a soil structure interaction case and I need your help if you can clarify a couple of things for me.
I want to perform a static and then dynamic analysis using UP elements.
I want to simulate a rigid soil container for which I constrain the soil edges.
I do not need ...
by jpereirasan
Tue Nov 12, 2024 10:10 pm
Forum: Condition
Topic: apply prescribed pressure value
Replies: 4
Views: 2290

Re: apply prescribed pressure value

Dear STKO Team, thanks for your repply.
How i can do this if i'm working with SSPQuad UP elements?
Should i create a groundmotion object with a velocity timeseries with constant value equal to the pressure that i want to apply?