Arman Kamalzadeh

12 Questions 25 Answers 0 Followers

Questions related from Arman Kamalzadeh

Can the DSHA from all the sources be smaller than PSHA?

Can the DSHA spectrum be less than the PSHAs spectra? I came across a report with the attached graph showing DSHA curves from each source considered in the PSHA calculations are less than the...

18 August 2024 7,770 2 View

How to simulate MSE walls for dynamic FE analyses?

Hi colleagues, Because of the complexity of modelling geogrid layers and their interfaces which can cause convergence problem in FE analyses, I have seen in practice they model the whole MSE wall...

15 August 2020 5,002 3 View

Predicting Time of PGA Occurrence?

I want to estimate the approximate PGA time for far-field earthquake records. For instance the PGA of ElCentro earthquake record occurs at 2.15 s, I want this time. Is there any paper you can...

07 September 2013 9,868 0 View

Which of these two options describes Viscous damper better?

I want to model Viscous Damper in a steel moment frame as a brace like element (I am using OpenSees). My question is for what I mentioned is it better to use KELVIN-VOIGT Model (defining Viscous...

31 August 2013 599 6 View

Estimating Time of PGA Occurrence?

I want to estimate the approximate PGA time for far-field earthquake records. Is there any paper you can introduce to me for this or some kind of intensity function or some kind of a function for...

23 August 2013 3,009 2 View

Best Matlab wavelet function for earthquake acceleration records

I want to have wavelet transforms of some acceleration records as part of my analysis with Matlab program. Can you tell me what is the best wavelet function in Matlab for this purpose? (Someone...

08 June 2013 4,728 4 View

How to scale earthquake acceleration record to reach collapse prevention performance level?

I have read the scaling criteria of ASCE 7-10, which recommends that the group of selected acceleration records must be above the design response spectrum from 0.2T to 1.5T, where T is the...

08 March 2013 4,496 10 View

How to design a steel frame to be sure it will undergo nonlinear deformations when earthquake acceleration records exerted on it.

I want to do some time history nonlinear analysis on a couple of 1-storey, 1-bay steel moment frames and I want to design them in a way to ensure that nonlinear deformations will occur in these...

24 February 2013 222 9 View

How to calculate input energy of an earthquake?

Can you introduce me to a reference that discusses how to calculate earthquake input energy in detail? Do you know a program (open access program such as seismosignal is preferred) that gives this...

21 February 2013 1,244 16 View

What is the most appropriate damage indices for modelling actual damage specially for steel structures?

Like Park & And , ...

23 December 2012 2,240 6 View

What is wrong with my code?

model basic -ndm 2 -ndf 2 set E [expr 1.995*1.e6] set mu 0.22 set Pi [expr 4*atan(1)] node 1 0. 0. node 2 20. 0. node 3 20. 20. node 4 7. 14. nDMaterial ElasticIsotropic 1 $E $mu element quad...

28 November 2012 1,938 3 View

What is the concept of fragility curve?

What is the concept of fragility curve and how is it obtained? What is its application in designing procedures?

28 April 2012 392 29 View