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The '''endurance time''' ('''ET''')<ref name="LoganAbbrev">{{Cite book |title=Logan's Medical and Scientific Abbreviations |vauthors=Logan CM, Rice MK |publisher=[[J. B. Lippincott & Co.|J. B. Lippincott]] |year=1987 |isbn=0-397-54589-4 |page=182 |type=Hardbound book}}</ref> '''method''' is a [[Structural dynamics|dynamic structural analysis]] procedure for seismic assessment of structures. In this procedure, an intensifying dynamic excitation is used as the [[Structural load|loading]] function.<ref name=w2/> Endurance time method is a time-history based dynamic analysis procedure. An estimate of the structural response at different equivalent [[Seismic hazard|seismic intensity]] levels is obtained in a single response history analysis.<ref name=j2/> This method has applications in [[Seismic analysis|seismic assessment]] of various structural types and in different areas of [[earthquake engineering]].<ref name=j39/><ref name=j42/><ref name=j43/>
== The concept of endurance time method ==
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<ref name=j13>Valamanesh, V and Estekanchi, H. E. (2011), "Endurance time method for multi-component analysis of steel elastic moment frames", Scientia Iranica, v18, n2, p139-142, [https://dx.doi.org/10.1016/j.scient.2011.03.024 doi:10.1016/j.scient.2011.03.024]</ref>
<ref name=j14>Valamanesh, V; Estekanchi, H. E., Vafai, A and Ghaemian M. (2011), "Application of Endurance time method in seismic analysis of concrete gravity dams", Scientia Iranica A, v18, n3, p326-337, [https://dx.doi.org/10.1016/j.scient.2011.05.039 doi:10.1016/j.scient.2011.05.039]</ref>
<ref name=j15>Estekanchi, H. E., Riahi, H. T. and Vafai, A. (2011),
<ref name=j16>Madarshahian, R., Estekanchi, H. E. and Mahvashmohammadi, A. (2011), "Estimating seismic demand parameters with Endurance Time method", Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), v12, n8, p616-626, [https://dx.doi.org/10.1631/jzus.A1000389 doi:10.1631/jzus.A1000389]</ref>
<ref name=j17>Nozari, A and Estekanchi, H. E. (2011) "Optimization of Endurance Time acceleration functions for seismic assessment of structures, International Journal of Optimization in Civil Engineering, v1, n2, 257–277, [http://www.iust.ac.ir/ijoce/browse.php?a_id=18&sid=1&slc_lang=en Link]</ref>
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