Buckling-Restrained Braces ( BRB ) Modelling
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- Posts: 11
- Joined: 27 Jul 2019, 16:18
Buckling-Restrained Braces ( BRB ) Modelling
Dear All
can anyone help me model BRB (Buckling-Restrained Braces) please in SeismoStruct ?
can anyone help me model BRB (Buckling-Restrained Braces) please in SeismoStruct ?
Re: Buckling-Restrained Braces ( BRB ) Modelling
Dear Mina Rizkalla,
Please carry out a search on this forum for the term "buckling restrained".
Please carry out a search on this forum for the term "buckling restrained".
Zoi Gronti
Seismosoft Srl.
Seismosoft Srl.
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- Posts: 11
- Joined: 27 Jul 2019, 16:18
Re: Buckling-Restrained Braces ( BRB ) Modelling
Dear Zoi Gronti
I modeled the BRB use truss element class and the cross section is CSS (Circular solid Section)
is that a correct way for the BRB modelling ?
Also what is the best Stress-Strain curve that best fits the steel material for the BRB ?
I modeled the BRB use truss element class and the cross section is CSS (Circular solid Section)
is that a correct way for the BRB modelling ?
Also what is the best Stress-Strain curve that best fits the steel material for the BRB ?
- seismosoft
- Posts: 1184
- Joined: 06 Jul 2007, 04:55
Re: Buckling-Restrained Braces ( BRB ) Modelling
Yes, provided that you have pinned joints at the braces ends.
Note also that, apart from the standards steel mterials, there is a special buckling restrained steel brace model stl_brb.
Seismosoft Support
Note also that, apart from the standards steel mterials, there is a special buckling restrained steel brace model stl_brb.
Seismosoft Support
Re: Buckling-Restrained Braces ( BRB ) Modelling
https://ibb.co/MsBnbWzseismosoft wrote: ↑04 May 2020, 15:46 Yes, provided that you have pinned joints at the braces ends.
Note also that, apart from the standards steel mterials, there is a special buckling restrained steel brace model stl_brb.
Seismosoft Support
How do I know the 'material properties' that need to be defined to correspond to the Stress-Strain plot? Is there a sample key that I can use to follow?
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- Posts: 11
- Joined: 27 Jul 2019, 16:18
Re: Buckling-Restrained Braces ( BRB ) Modelling
How can I make sure that I have modeled (simulated) a correct BRB model element in SeismoStruct ?
- seismosoft
- Posts: 1184
- Joined: 06 Jul 2007, 04:55
Re: Buckling-Restrained Braces ( BRB ) Modelling
In general, by checking its response in the post-processor. However, a sample disply plot is also provided in the Materials dialog box.
Seismosoft Support
Seismosoft Support
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- Posts: 11
- Joined: 27 Jul 2019, 16:18
Re: Buckling-Restrained Braces ( BRB ) Modelling
After modelling and running the model, as I click on the "Post Processor" tab, a warning message "Axis Maximum Value must be >=Minimum".
how can I solve it ?
(despite the model is run, no results are able to be previewed)
how can I solve it ?
(despite the model is run, no results are able to be previewed)
Re: Buckling-Restrained Braces ( BRB ) Modelling
Zoi Gronti
Seismosoft Srl.
Seismosoft Srl.
Re: Buckling-Restrained Braces ( BRB ) Modelling
Dear Mina Rizkalla,
When you assign pushover phases in opposite directions the program is not able to calculate the target displacement, that's why you receive the reported error. If you uncheck the checkbox for the calculation of the target displacement, you will be able to view the results of the analysis. We will fix the bug in the next release.
Finally, I would like to propose you to use the static time history analysis when you apply loading to both directions.
When you assign pushover phases in opposite directions the program is not able to calculate the target displacement, that's why you receive the reported error. If you uncheck the checkbox for the calculation of the target displacement, you will be able to view the results of the analysis. We will fix the bug in the next release.
Finally, I would like to propose you to use the static time history analysis when you apply loading to both directions.
Zoi Gronti
Seismosoft Srl.
Seismosoft Srl.