TY - JOUR
T1 - Decoupling criterion for elastic-plastic seismic analysis of large-scale complex piping systems in nuclear power plants
AU - Kim, Soo Bin
AU - Kim, Yun Jae
AU - Kim, Jong Sung
N1 - Funding Information:
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) (No. 20171520 101650 and No. 20181510102380).
Publisher Copyright:
© 2020, The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2020/11
Y1 - 2020/11
N2 - This paper proposes an elastic-plastic-based decoupling criterion that can be applied to the seismic analysis of large-scale complex piping systems in nuclear power plants under beyond design basis earthquakes. First, the existing elastic-based decoupling criteria for seismic analyses were critically reviewed. Next, the effect of plasticity on the decoupling criteria was investigated by considering the equivalent damping and stiffness reduction. Finally, the decoupling criterion considering plasticity was developed based on the changes resulting from existing decoupling criteria. The validity of the proposed decoupling criterion was confirmed through its application to an analysis of a real piping system.
AB - This paper proposes an elastic-plastic-based decoupling criterion that can be applied to the seismic analysis of large-scale complex piping systems in nuclear power plants under beyond design basis earthquakes. First, the existing elastic-based decoupling criteria for seismic analyses were critically reviewed. Next, the effect of plasticity on the decoupling criteria was investigated by considering the equivalent damping and stiffness reduction. Finally, the decoupling criterion considering plasticity was developed based on the changes resulting from existing decoupling criteria. The validity of the proposed decoupling criterion was confirmed through its application to an analysis of a real piping system.
KW - Decoupling criterion
KW - Elastic-plastic seismic analysis
KW - Nuclear power plants
KW - Piping systems
UR - http://www.scopus.com/inward/record.url?scp=85096204548&partnerID=8YFLogxK
U2 - 10.1007/s12206-020-1015-5
DO - 10.1007/s12206-020-1015-5
M3 - Article
AN - SCOPUS:85096204548
SN - 1738-494X
VL - 34
SP - 4563
EP - 4573
JO - Journal of Mechanical Science and Technology
JF - Journal of Mechanical Science and Technology
IS - 11
ER -