Year 2018, Volume 22 , Issue 2, Pages 364 - 374 2018-08-15

Hysteretic Energy Demand in SDOF Structures Subjected to an Earthquake Excitation: Analytical and Empirical Results

Taner UÇAR [1] , Onur MERTER [2]


In energy-based seismic design approach, earthquake ground motion is considered as an energy input to structures. The earthquake input energy is the total of energy components such as kinetic energy, damping energy, elastic strain energy and hysteretic energy, which contributes the most to structural damage. In literature, there are many empirical formulas based on the hysteretic model, damping ratio and ductility in order to estimate hysteretic energy, whereas they do not directly consider the ground motion characteristics. This paper uses nonlinear time history (NLTH) analysis for energy calculations and presents the distribution of earthquake input energy and hysteretic energy of single-degree-of-freedom (SDOF) systems over the ground motion duration. Seven real earthquakes recorded on the same soil profile and three different bilinear SDOF systems having constant ductility ratio and different natural periods are selected to perform NLTH analyses. As results of nonlinear dynamic analyses, input and hysteretic energies per unit masses are graphically obtained. The hysteretic energy to input energy ratio (EH/EI) is investigated, as well as the ratio of other energy components to energy input. EH/EI ratios of NLTH analysis are compared to the results of empirical approximations related EH/EI ratio and a reasonable agreement is observed. The average of EH/EI ratio is found to be between 0.468 and 0.488 meaning nearly half of the earthquake energy input is dissipated through the hysteretic behavior.
Earthquake ground motion, Hysteretic energy; Input energy; NLTH analysis; SDOF system; Hysteretic energy to input energy ratio
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Journal Section Articles
Authors

Author: Taner UÇAR

Author: Onur MERTER

Dates

Publication Date : August 15, 2018

Bibtex @ { sdufenbed456304, journal = {Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi}, issn = {}, eissn = {1308-6529}, address = {}, publisher = {Süleyman Demirel University}, year = {2018}, volume = {22}, pages = {364 - 374}, doi = {10.19113/sdufbed.84512}, title = {Hysteretic Energy Demand in SDOF Structures Subjected to an Earthquake Excitation: Analytical and Empirical Results}, key = {cite}, author = {UÇAR, Taner and MERTER, Onur} }
APA UÇAR, T , MERTER, O . (2018). Hysteretic Energy Demand in SDOF Structures Subjected to an Earthquake Excitation: Analytical and Empirical Results. Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi , 22 (2) , 364-374 . Retrieved from https://dergipark.org.tr/en/pub/sdufenbed/issue/38975/456304
MLA UÇAR, T , MERTER, O . "Hysteretic Energy Demand in SDOF Structures Subjected to an Earthquake Excitation: Analytical and Empirical Results". Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi 22 (2018 ): 364-374 <https://dergipark.org.tr/en/pub/sdufenbed/issue/38975/456304>
Chicago UÇAR, T , MERTER, O . "Hysteretic Energy Demand in SDOF Structures Subjected to an Earthquake Excitation: Analytical and Empirical Results". Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi 22 (2018 ): 364-374
RIS TY - JOUR T1 - Hysteretic Energy Demand in SDOF Structures Subjected to an Earthquake Excitation: Analytical and Empirical Results AU - Taner UÇAR , Onur MERTER Y1 - 2018 PY - 2018 N1 - DO - T2 - Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi JF - Journal JO - JOR SP - 364 EP - 374 VL - 22 IS - 2 SN - -1308-6529 M3 - UR - Y2 - 2020 ER -
EndNote %0 Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi Hysteretic Energy Demand in SDOF Structures Subjected to an Earthquake Excitation: Analytical and Empirical Results %A Taner UÇAR , Onur MERTER %T Hysteretic Energy Demand in SDOF Structures Subjected to an Earthquake Excitation: Analytical and Empirical Results %D 2018 %J Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi %P -1308-6529 %V 22 %N 2 %R %U
ISNAD UÇAR, Taner , MERTER, Onur . "Hysteretic Energy Demand in SDOF Structures Subjected to an Earthquake Excitation: Analytical and Empirical Results". Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi 22 / 2 (August 2018): 364-374 .
AMA UÇAR T , MERTER O . Hysteretic Energy Demand in SDOF Structures Subjected to an Earthquake Excitation: Analytical and Empirical Results. SDÜ Fen Bil Enst Der. 2018; 22(2): 364-374.
Vancouver UÇAR T , MERTER O . Hysteretic Energy Demand in SDOF Structures Subjected to an Earthquake Excitation: Analytical and Empirical Results. Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi. 2018; 22(2): 374-364.