Analysis of piping with hysteretic supports using response spectra

T. Igusa; R. Sinha; E. Kokubo; S. I. Furukawa; J. I. Kawahata

doi:10.1016/0029-5493(93)90222-U

Analysis of piping with hysteretic supports using response spectra

T. Igusa, R. Sinha, E. Kokubo, S. I. Furukawa, J. I. Kawahata

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

This paper introduces a response spectra-based method for analyzing piping with hysteretic nonlinear supports. The method is developed to be as simple and versatile as possible, yet accurate enough to model the essential nonlinear behavior of the supports. The required data is the hysteresis loops of the supports, the linear properties of the piping, and the linear acceleration response spectra. The supports are modeled by equivalent linear stiffness and damping, and the combined piping/support system is analyzed using complex modal properties that account for high-damping effects. The final peak response is obtained by a mode combination rule which is a new generalization of Complete Quadrature Combination (CQC) that accounts for nonlinear properties and complex modes. Sensitivities that indicate the degree of nonlinear behavior and support interaction are also determined. The method is used to analyze two three-dimensional piping systems with multiple nonlinear supports, which have been tested on a shaking table. Comparisons between experimental and analytical results show good agreement.

Original language	English (US)
Pages (from-to)	187-199
Number of pages	13
Journal	Nuclear Engineering and Design
Volume	143
Issue number	2-3
DOIs	https://doi.org/10.1016/0029-5493(93)90222-U
State	Published - Sep 1993
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
Nuclear Energy and Engineering
Materials Science(all)
Safety, Risk, Reliability and Quality
Waste Management and Disposal
Mechanical Engineering

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title = "Analysis of piping with hysteretic supports using response spectra",

abstract = "This paper introduces a response spectra-based method for analyzing piping with hysteretic nonlinear supports. The method is developed to be as simple and versatile as possible, yet accurate enough to model the essential nonlinear behavior of the supports. The required data is the hysteresis loops of the supports, the linear properties of the piping, and the linear acceleration response spectra. The supports are modeled by equivalent linear stiffness and damping, and the combined piping/support system is analyzed using complex modal properties that account for high-damping effects. The final peak response is obtained by a mode combination rule which is a new generalization of Complete Quadrature Combination (CQC) that accounts for nonlinear properties and complex modes. Sensitivities that indicate the degree of nonlinear behavior and support interaction are also determined. The method is used to analyze two three-dimensional piping systems with multiple nonlinear supports, which have been tested on a shaking table. Comparisons between experimental and analytical results show good agreement.",

author = "T. Igusa and R. Sinha and E. Kokubo and Furukawa, {S. I.} and Kawahata, {J. I.}",

note = "Funding Information: The research work in this paper was supported by the National Science Foundation under Grant No. BCS-8858549, Dr. S.C. Liu, Program Director, and by the Mitsubishi Heavy Industries, Ltd., Mr. I. Ichihashi of the Kansai Electric Power Company, Project Monitor. This support is gratefully acknowledged. The authors would also like to thank Professor H. Shibata of the University of Tokyo and Professor K. Suzuki of Tokyo Metropolitan University for many enlightening discussions. Helpful comments were also received from Professor M. Kunieda of Meisei University and Professor F. Hara of the Science University of Tokyo.",

year = "1993",

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doi = "10.1016/0029-5493(93)90222-U",

language = "English (US)",

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T1 - Analysis of piping with hysteretic supports using response spectra

AU - Igusa, T.

AU - Sinha, R.

AU - Kokubo, E.

AU - Furukawa, S. I.

AU - Kawahata, J. I.

N1 - Funding Information: The research work in this paper was supported by the National Science Foundation under Grant No. BCS-8858549, Dr. S.C. Liu, Program Director, and by the Mitsubishi Heavy Industries, Ltd., Mr. I. Ichihashi of the Kansai Electric Power Company, Project Monitor. This support is gratefully acknowledged. The authors would also like to thank Professor H. Shibata of the University of Tokyo and Professor K. Suzuki of Tokyo Metropolitan University for many enlightening discussions. Helpful comments were also received from Professor M. Kunieda of Meisei University and Professor F. Hara of the Science University of Tokyo.

PY - 1993/9

Y1 - 1993/9

N2 - This paper introduces a response spectra-based method for analyzing piping with hysteretic nonlinear supports. The method is developed to be as simple and versatile as possible, yet accurate enough to model the essential nonlinear behavior of the supports. The required data is the hysteresis loops of the supports, the linear properties of the piping, and the linear acceleration response spectra. The supports are modeled by equivalent linear stiffness and damping, and the combined piping/support system is analyzed using complex modal properties that account for high-damping effects. The final peak response is obtained by a mode combination rule which is a new generalization of Complete Quadrature Combination (CQC) that accounts for nonlinear properties and complex modes. Sensitivities that indicate the degree of nonlinear behavior and support interaction are also determined. The method is used to analyze two three-dimensional piping systems with multiple nonlinear supports, which have been tested on a shaking table. Comparisons between experimental and analytical results show good agreement.

AB - This paper introduces a response spectra-based method for analyzing piping with hysteretic nonlinear supports. The method is developed to be as simple and versatile as possible, yet accurate enough to model the essential nonlinear behavior of the supports. The required data is the hysteresis loops of the supports, the linear properties of the piping, and the linear acceleration response spectra. The supports are modeled by equivalent linear stiffness and damping, and the combined piping/support system is analyzed using complex modal properties that account for high-damping effects. The final peak response is obtained by a mode combination rule which is a new generalization of Complete Quadrature Combination (CQC) that accounts for nonlinear properties and complex modes. Sensitivities that indicate the degree of nonlinear behavior and support interaction are also determined. The method is used to analyze two three-dimensional piping systems with multiple nonlinear supports, which have been tested on a shaking table. Comparisons between experimental and analytical results show good agreement.

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Analysis of piping with hysteretic supports using response spectra

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