Simplification of Earthquake Accelerograms for Rapid Time History Analysis Based on the Impulsive Load Concept

Hosseini, Mehdi; Mirzaei, Iraj

doi:10.7712/120113.4667.c1670

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…see [5][6][7], (3) reducing the number of oscillatory modes [8,9], and (4) using higher order time integration methods [10][11][12]. Meanwhile, in the last two decades, approaches are developed to reduce the computational effort by reducing the earthquake records' data [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

A Technique for Time Integration With Steps Larger Than the Excitation Steps: Review of the Past and Addressing the Existing Challenges and a Perspective of the Future

Soroushian¹

2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Time history analysis using a time integration method is a powerful broadly accepted tool for structural dynamic analysis. In practical areas, such as earthquake engineering, computations based on time history analysis might be computationally very expensive. In 2008, a technique was proposed to considerably reduce the computational effort by reducing the data in the earthquake record. This technique, which is recently named as a SEB THAAT, is reviewed in this paper. After a brief review on the formulation and implementation, the positive points, the limitations, and the challenges facing versatile implementation of the SEB THAAT are addressed, and a future perspective is presented.

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Section: Introductionmentioning

confidence: 99%

A Technique for Time Integration With Steps Larger Than the Excitation Steps: Review of the Past and Addressing the Existing Challenges and a Perspective of the Future

Soroushian¹

2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…Numerous methods are possible for the production of simulated earthquake motion reports using the wavelets packet theory [10]. Moreover, Hosseini and Mirzaei [11] have proposed a method for simplification of earthquake accelerograms for fast THA based on the automatic load concept [4]. However, simplification of digitized accelerograms can carry out with different methods such as Fourier and Inverse Fourier Transforms, as described from now on, so that much larger time steps can be made possible for the simplified accelerogram.…”

Section: Introductionmentioning

confidence: 99%

Incremental dynamic analysis of SDOF by using nonlinear earthquake accelerograms based on modified inverse Fourier transform

Faroughi¹,

Hosseini²

2017

J. vibroeng.

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In evaluation of structures, performing nonlinear response of model over a time analysis or incremental dynamic analysis needs more time. Hence, it can be beneficial if the event history report is carried out with long time steps without loss of accuracy. This study includes a method to simplify of accelerograms meant on the change of their Fourier reports. So, the Fourier Spectrum of the accelerogram is initially determined. Next applying a PC code generation, the similar Inverse Fourier Convert is computed utilizing a comparatively large time stage, depending on the structure's times; that is ordinarily five to ten times bigger than primary accelerogram's duration stage to generate the visible accelerogram. This application from the simplified accelerogram apparently takes much less time. Results indicates that the analysis time can be reduced up to 80 % by using the proposed method. While the maximum response shows an error of merely five to ten percent, about the sort of structure and the characteristics of the records used.

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“…(for detailed explanations, on this technique, see [21,24,25], and for other computational cost reduction techniques potentially considering digitized excitations, and the comparison of the techniques, see [21,[26][27][28][29]). An enhanced version of the technique [24,25] takes into account fractional enlargement of step sizes; see [30].…”

Section: Introductionmentioning

confidence: 99%

On Time History Analyis With Steps Larger Than the Steps of Earthquake Records Independent From the Frequency Contents

Soroushian¹

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Simplification of Earthquake Accelerograms for Rapid Time History Analysis Based on the Impulsive Load Concept

Abstract: Abstract. Regarding that the time history analysis, as the most realistic seismic response analysis method, is very time consuming, in this paper

Cited by 4 publications

References 5 publications

A Technique for Time Integration With Steps Larger Than the Excitation Steps: Review of the Past and Addressing the Existing Challenges and a Perspective of the Future

A Technique for Time Integration With Steps Larger Than the Excitation Steps: Review of the Past and Addressing the Existing Challenges and a Perspective of the Future

Incremental dynamic analysis of SDOF by using nonlinear earthquake accelerograms based on modified inverse Fourier transform

On Time History Analyis With Steps Larger Than the Steps of Earthquake Records Independent From the Frequency Contents

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