Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
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Seismic Stability Evaluation of Bellows Type Expansion Joints Piping System(350A)

350A 벨로우즈형 신축관이음의 내진특성 평가

  • Son, In-Soo (Division of Mechanical, Automobile, Robot Component Engineering, Dong-eui University)
  • 손인수 (동의대학교 기계자동차로봇부품공학부)
  • Received : 2020.06.11
  • Accepted : 2020.07.08
  • Published : 2020.08.31
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Abstract

In this study, seismic verification of the bellows used in the plant field was conducted. The pressure used in the analysis was analyzed by applying the design pressure of 15.7bar. For the seismic analysis, the natural frequency of the bellows system was obtained and the stability of the system was evaluated by static seismic analysis comparing the lowest order natural frequency with the dominant frequency of 33 Hz. The material of the bellows system is STS304, and the safety factor is obtained in comparison with the allowable stress. For the seismic analysis, the design response spectrum was prepared and the maximum acceleration was applied to the static seismic analysis and the stability of the entire system was confirmed. Compared to the structural analysis results, the maximum stress of the bellows system increased by about 16.4% and the maximum strain increased by about 3 times when seismic analysis was performed.

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References

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