On the estimation of hysteretic energy demands for SDOF systems |
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Authors: | Danny Arroyo Mario Ordaz |
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Affiliation: | 1. Departamento de Materiales, Universidad Autónoma Metropolitana, Azcapotzalco Avenida San Pablo 180, Colonia Reynosa Tamaulipas, México DF 02200, Mexico;2. Instituto de Ingeniería, Universidad Nacional Autónoma de México, Avenida Universidad 300, Ciudad Universitaria, Coyoacán, México DF 04510, Mexico |
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Abstract: | Based on a statistical study of the dynamic response of single degree of freedom (SDOF) systems subjected to earthquake ground motions, a rule to estimate hysteretic energy demands is proposed. Expressions for elastic–perfectly plastic, stiffness degrading and pinching SDOF systems were obtained. The proposed rule does not explicitly depend on the period of the system; instead, it depends on the elastic pseudo‐acceleration and elastic velocity spectra. It is shown that the proposed rule can be applied to compute hysteretic energy demands for systems located at different soil conditions. In addition, information about scatter and bias of the proposed rule is also presented. Copyright © 2007 John Wiley & Sons, Ltd. |
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Keywords: | hysteretic energy strong ground motion duration constant ductility spectra stiffness degrading system |
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