Hello people,
I am doing my graduation project about BRB ( Optimizing the seismic performance of BRB). I already developed a BRB model under cyclic loading using Abaqus.
And now I have to perform a frame model with BRB, and I think it is better to do it on OpenSees because a such simulation on Abaqus will be challenging and takes a lot of time. However, I am not familiarised with OpenSees. Please is there anyone who developed a BRBF model on OpenSees? I need help. Thanks
BRBF model using OpenSees
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tulipkapy
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Re: BRBF model using OpenSees
Hello,
I would look at Santiago Zaruma's Thesis: Seismic stability of buckling-restrained braced frames, and Ozgur Atlayan's Dissertation: Hybrid Steel Frames for information on this.
From what I have seen and done, you are going to want to use beam-column elements for the frame (P-Delta for vertical elements), a phenomenological single-truss element for the BRB, and a gravity leaning column. Typically BRBFs are modeled with pinned beam-column connections, done with use of equalDOF constraints.
If you have no experience with OpenSees, try out the examples on the wiki. Some don't work anymore, but you should be able to get the gist of how to script with OpenSees.
Additionally, if you are just starting with OpenSees, I suggest you use my custom Notepad++ language - it has full support of the OpenSees & Tcl languages. https://github.com/ambaker1/OpenSeesNotepadPlusPlus
-Alex
I would look at Santiago Zaruma's Thesis: Seismic stability of buckling-restrained braced frames, and Ozgur Atlayan's Dissertation: Hybrid Steel Frames for information on this.
From what I have seen and done, you are going to want to use beam-column elements for the frame (P-Delta for vertical elements), a phenomenological single-truss element for the BRB, and a gravity leaning column. Typically BRBFs are modeled with pinned beam-column connections, done with use of equalDOF constraints.
If you have no experience with OpenSees, try out the examples on the wiki. Some don't work anymore, but you should be able to get the gist of how to script with OpenSees.
Additionally, if you are just starting with OpenSees, I suggest you use my custom Notepad++ language - it has full support of the OpenSees & Tcl languages. https://github.com/ambaker1/OpenSeesNotepadPlusPlus
-Alex