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http://dx.doi.org/10.7734/COSEIK.2021.34.3.167

Elastic Wave Propagation in Nuclear Power Plant Containment Building Walls Considering Liner Plate and Concrete Cavity  

Kim, Eunyoung (Department of Civil Engineering, Hongik University)
Kim, Boyoung (Department of Civil Engineering, Hongik University)
Kang, Jun Won (Department of Civil Engineering, Hongik University)
Lee, Hongpyo (Central Research Institute, Korea Hydro & Nuclear Power CO., LTD)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.34, no.3, 2021 , pp. 167-174 More about this Journal
Abstract
Recent investigation into the integrity of nuclear containment buildings has highlighted the importance of developing an elaborate diagnostic method to evaluate the distribution and size of cavities inside concrete walls. As part of developing such a method, this paper presents a finite element approach to modeling elastic waves propagating in the containment building walls of a nuclear power plant. We introduce a perfectly matched layer (PML) wave-absorbing boundary to limit the large-scale nuclear containment wall to the region of interest. The formulation results in a semi-discrete form with symmetric damping and stiffness matrices. The transient elastic wave equations for a mixed unsplit-field PML were solved for displacement and stresses in the time domain. Numerical results show that the sensitivity of displacement, velocity, acceleration, and stresses is large depending on the size and location of the cavity. The dynamic response of the wall slightly differs depending on the existence of the containment liner plate. The results of this study can be applied to a full-waveform inversion approach for characterizing cavities inside a containment wall.
Keywords
reactor containment building; perfectly matched layer; mixed finite element method; forward problem; elastic waves;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Kucukcoban, S. (2010) The Inverse Medium Problem in PML-Truncated Elastic Media, Ph.D. Thesis, The University of Texas at Austin, p.287.
2 Youn, S., Kang, J.W. (2018) Explicit Transient Simulation of SH-waves using a Spectral Element Method, J. Comput. Struct. Eng. Inst. Korea, 31(2), pp.87~95.   DOI
3 Kang, J.W., Kallivokas, L.F. (2010) The Inverse Medium Problem in 1D PML-Truncated Heterogeneous Semi-Infinite Domains, Inverse Problems Sci. & Eng., 18(6), pp.759~786.   DOI
4 Kang, J.W., Pakravan, A. (2013) Performance Evaluation of a Time-Domain Gauss-Newton Full-waveform Inversion Method, J. Comput. Struct. Eng. Inst. Korea, 26(4), pp.223~231.   DOI
5 Kim, B., Kang, J.W. (2019) A-Time Domain Formulation of Elastic Waves in Heterogeneous Unbounded Domains, Multiscale Sci. & Eng., 1, pp.220~235.   DOI
6 Fathi, A., Poursartip, B., Kallivokas, L.F. (2015) Time-Domain Hybrid Formulations for Wave Simulations in Three-Dimensional PML-Truncated Heterogeneous Media, Int. J. Numer. Methods Eng., 101(3), pp.165~198.   DOI
7 Kang, J.W. (2013) Time-Domain Elastic Full-Waveform Inversion using One-Dimensional Mesh Continuation Scheme, J. Comput. Struct. Eng. Inst. Korea, 26(4), pp.213~221.   DOI