Distribution of accumulated irrecoverable hysteretic energy in MDOF structures
Multidiscipline Modeling in Materials and Structures
ISSN: 1573-6105
Article publication date: 21 December 2017
Issue publication date: 24 May 2018
Abstract
Purpose
The study of the character of structural hysteretic energy under earthquake is an essential foundation for energy-based seismic design and evaluation method. The purpose of this paper is to explore the distribution law of the accumulative irrecoverable hysteretic energy for MDOF structures, a formula of the accumulated irrecoverable hysteretic energy ratio along the layers is derived.
Design/methodology/approach
The procedure is based on the energy balance principle and the concept of the equivalent single-degree-of-freedom system. Furthermore, sensitivity analysis is carried out for 16 working conditions, considering all these possibilities of local failure or damage. And then the sensitivity influencing rule is obtained and the proposed formula is simplified.
Findings
Finally, the validation of the proposed formula is investigated through comparisons with the nonlinear time-history analysis results.
Originality/value
The proposed formula can be effectively to estimate the distribution of the hysteretic energy under a given ground motion.
Keywords
Acknowledgements
This work was supported by China Postdoctoral Science Foundation funded project (Grant No. 2016M592901XB), China Educational Commission of Shaanxi funded project (Grant No. 15JK1478) and Xi’an University of Science and Technology cultivating fund project (Grant No. 201645). This financial is gratefully acknowledged.
Citation
Tu, B.B. and Zhao, D. (2018), "Distribution of accumulated irrecoverable hysteretic energy in MDOF structures", Multidiscipline Modeling in Materials and Structures, Vol. 14 No. 2, pp. 202-215. https://doi.org/10.1108/MMMS-05-2017-0028
Publisher
:Emerald Publishing Limited
Copyright © 2018, Emerald Publishing Limited