Advanced Brainery Bytes

These are more advanced Brainery Bytes with interesting demonstrations.
Many of these BraineryBytes are contributions from the community.
They are in a no particular order, I try to group them and/or place new content at the top of the page.

Please let me know if you'd like to contribute!

WallDiscretization.JPG

OpenSeesScript

This notebook describes the convergence analysis of the discretization of walls in a finite element mesh, it also develops an example of linear static analysis by the Peruvian standard E030 of a coupled wall discretized in shell elements.

Even though the text is in Spanish, the notebook is intuitive for any language

Developer:

Humberto Aldair Rojas Huaroto

https://www.linkedin.com/in/humberto-rojas-huaroto-63908321a/

November 2021

Bijan1.JPG

OpenSeesScript

In this JuPyter Notebook we will discuss about DOF releasing problems and methods to transfer only axial deformation, specially when the elements are oriented in an arbitrary direction, not necessarily parallel to the global direction and we check the results to ensure which modeling choice is the best.

Developer:

Bijan SayyafZadeh, Silvia Mazzoni

August 2021

Elastic Response Spectra by Amir.JPG

OpenSeesScript

My first link to someone else's GitHub Repository!

This is a great place to get started with computing response spectra!

This Notebook computes the response spectra for a ground motion at various damping ratios.

Developer:

Amir Hossein Namadchi

https://www.linkedin.com/in/amir-hossein-namadchi/

April 2020

DoubleLayerDome.png

OpenSeesScript

This is an OpenSeesPy simulation of one of the numerical examples in a previously published paper. The Core was purely written in Mathematica. This is an attempt to perform the analysis again via Opensees Core, to see if you can get the similar results. 

Developer:

Amir Hossein Namadchi

https://www.linkedin.com/in/amir-hossein-namadchi/

April 2020

BatheModelProblem.jpg

OpenSeesScript

This is an OpenSeesPy simulation of a simple linear 3 DOF system introduced by Bathe and Noh. The model was used to demonstrate the ability of Bathe method in filtering out the unwanted artificial high-frequency responses. The effectiveness of numerical dissipation in a specific time integration algorithm could be evaluated by analyzing this benchmark model problem.

Developer:

Amir Hossein Namadchi

https://www.linkedin.com/in/amir-hossein-namadchi/

March 2020

ElastoPlasticSDOF.jpg

OpenSeesScript

This is an OpenSeesPy simulation of a simple SDOF system with elastoplastic behavior mentioned in Dynamics of Structures book by Ray W. Clough and J. Penzien.

Developer:

Amir Hossein Namadchi

https://www.linkedin.com/in/amir-hossein-namadchi/

March 2020

NLMRF.JPG

OpenSeesScript

This is an OpenSeesPy simulation of a moment resisting frame subjected to seismic excitation..

Developer:

Amir Hossein Namadchi

https://www.linkedin.com/in/amir-hossein-namadchi/

March 2020

CurvedArchSquished.JPG

OpenSeesScript

This is an OpenSeesPy simulation of one of the numerical examples in A robust composite time integration scheme for snap-through problems by Yenny Chandra et. al. It's a special problem involving dynamic snap-through with large deformations in elastic range. In their study, a new three sub-step composite time integration algorithm was presented to handle such problems

Developer:

Amir Hossein Namadchi

https://www.linkedin.com/in/amir-hossein-namadchi/

April 2020

FrameBuckling.JPG

WebDemo

This notebook describes the elastic frame buckling computations developed by Luigi Caglio.
The original idea was posted as a reply to a post in the OpenSees Facebook group and the steps were then summarized in this blog post.

Developers:

Luigi Caglio & Michael H. Scott

June 2021