Sahar Ebrahimi

8 Questions 12 Answers 0 Followers

Questions related from Sahar Ebrahimi

Can we use PSDM in combination with IDA for fragility assessment?

I'm a little confused...I want to know if we can use PSDM (I mean linear regression between IM & EDP) with IDA data or just it is suitable for unscaled records analysis. If we can use it for IDA,...

02 April 2023 383 2 View

How the low damping elastomeric bearing is usually modeled in OpenSees? I mean with which element or material?

I used KikuchiAikenLRB, BoucWen, and Hystereticpoly materials for simulating the shear behavior of the isolator. Also, I used LeadRubberX and ElastomericX elements, but unfortunately, I didn't get...

24 October 2022 9,133 0 View

Could anyone help me Which parameters or commands in OpenSees are effective on the non-linear behavior of the structure?

I have modeled a 6-story steel structure (3d) with a combination of base isolators and viscous damper in the base level in OpenSees which corresponds to a MCEER report so as to verify my modeling...

05 September 2022 8,723 0 View

What is a difference between a linear elastic and linear viscous element and also the meaning of Parasitic viscous damping?

Could anyone explain the difference between a linear elastic and linear viscous element? also the meaning of parasitic viscous damping in an isolation system that results in a reduction of...

02 July 2022 9,788 4 View

Is there any article related to resilience-cost optimization in structures using multi-objective algorithms?

For example, using NSGA-II or PSO to simultaneously optimize seismic resilience and the cost of a retrofitted or designed structure using different passive control devices.

18 November 2021 2,015 2 View

How can i obtain modal participation masses and Modal participation factors in OpenSees?

I modeled a 5 story three-dimensional steel structure in OpenSees. I want to get the modal participation masses and Modal participation factors and compare it with the Etabs model. I know that...

04 November 2021 1,862 7 View

What is the reason for the slight difference between periods in structural modeling in SAP and Opensees software?

I modeled a 5-story frame with 3 bays in these two softwares, and periods 1.15 and 1.09 sec were obtained in SAP and Opensees, respectively.(The period of the first mode of the structure)

28 May 2021 3,021 0 View

Is there a guide book or paper for designing a TADAS damper?

On what basis are the section size of the chevron brace and the SR (The ratio of the stiffness of the brace and the damper to the stiffness of the story) determined in design of the TADAS damper?

10 May 2021 6,238 4 View