Abstract
The use of an electromagnetic-tuned liquid column inerter, known as ETLCDI, for mitigating the seismic response in a nuclear containment structure has been studied. The optimization of the structure incorporating the device has rarely been reported. The recently introduced enhanced version of the traditional liquid column inerter, called the ETLCDI, has been designed to meet the demanding requirements of engineering applications. This study explores the parameters and seismic analysis FPS-based structures that incorporates ETLCDI devices. Numerical method is used to optimize the parameters of the two components of the structure, which will minimize the variations in the seismic response. The results are based on the analysis of the stationary stochastic conditions under the influence of the FPS system’s nonlinear damping. This study thoroughly examines the effects of ETLCDI on a FPS-isolated framework. The numerical analysis of the structure is performed on a 2-DOF FPS-isolated framework that is equipped with an optimal ETLCDI. It has been found that the optimized ETLCDI can effectively address both the superstructure and base floor responses during severe seismic events.
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Abbreviations
- M :
-
Mass matrix
- C :
-
Damping matrix
- K :
-
Stiffness matrix
- τ :
-
Force vector
- u :
-
Displacement vector
- μ t :
-
Mass ratio of TMDI
- β t :
-
Inertance ratio
- ω b :
-
Natural frequency
- ξ b :
-
Damping ratio
- ω t :
-
Natural frequency of TMDI
- ν t :
-
Frequency ratio
- ξ t :
-
Damping ratio
- ξ l :
-
Damping ratio of liquid
- V l :
-
Natural frequency ratio
- α :
-
Length ratio of liquid
- μ :
-
Friction factor of FPS
- μ l :
-
The mass ratio of liquid
- μ c :
-
The mass ratio of tube
- R :
-
Radius of the FPS
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Acknowledgments
The project was financially supported by the China National Nuclear Corp.’s Youth Talent Development Project, Project name: Key technologies and testing validation of an enhance base-isolation structure of Hualong-1 nuclear power plants, Project No: KY90200210017.
The project was supported by a collaboration between the Board of Education of Yantai City and Harbin Engineering University, Project name: Interdiscipline of nuclear science and civil hydraulic engineering- construction of nuclear plants and nuclear safety, Project No: 22MZ03CD012.
The project was supported by the key R&D plan of the province of Heilongjiang, Project name: Digital Research on three-dimensional isolation and vibration reduction technology for nuclear heating nuclear, Project No:2022ZX01A14.
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Han Guangcai, Ph.D. born in 1966, is serving as the Professor of civil and aerospace engineering at the Harbin Engineering university. He is dedicated to teaching and conducting research related to multibody system dynamics and vibration control. His research interests include the study of the dynamic behavior of flexible rotating blades, the control of vibration in actuators on ships, and the use of energy equations for high-order mechanical systems. He has also conducted studies on armored vehicles and the analysis of elastic mechanics.
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Han, G., Wu, Y., Hou, G. et al. Optimal design of earthquake-resistant containment for FPS-Isolated nuclear power plants with electromagnetic tuned liquid column damper inerter. J Mech Sci Technol 38, 579–594 (2024). https://doi.org/10.1007/s12206-024-0107-z
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DOI: https://doi.org/10.1007/s12206-024-0107-z