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These records have x, y and z components optimized to fit average acceleration spectra (Sa), nonlinear displacement spectra and average hysteretic energy of C1, C2 and vertical components of FEMAP695 far-field record set.
"ETA40kd" series follow a linear intensification profile. Optimization has been done for 120 Ts in 0.02 sec to 5.0 sec range. Three ductility ratios are considered' 2, 4, and 8.
Records duration is 40.95 seconds, however they can be cut at shorter time (say 20th or 25th seconds) to save analysis time and avoid unrealistic or unintended intensities.
acceleration points are in terms of g.
NPTS=4096 DT=0.01
Direct access: ETA40kd
Related references:
Mashayekhi, Mohammadreza; Sarcheshmehpour, Mohammad; Mirfarhadi, Sayyed Ali; Estekanchi, Homayoon E; "Multidirectional seismic assessment of structures using damage-compatible Endurance Time intensifying excitations", Structures, 88, 2026,Elsevier. https://doi.org/10.1016/j.istruc.2026.111990
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