Nuclear Engineering and Technology

  • 제54권2호
  • /
  • Pages.732-740
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  • 2022
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Efficient elastic stress analysis method for piping system with wall-thinning and reinforcement

  • 투고 : 2021.05.18
  • 심사 : 2021.08.21
  • 발행 : 2022.02.25
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초록

A piping system stress analysis need to be re-performed for structural integrity assessment after reinforcement of a pipe with significant wall thinning. For efficient stress analysis, a one-dimensional beam element for the wall-thinned pipe with reinforcement needs to be developed. To develop the beam element, this work presents analytical equations for elastic stiffness of the wall-thinned pipe with reinforcement are analytically derived for axial tension, bending and torsion. Comparison with finite element (FE) analysis results using detailed three-dimensional solid models for wall-thinned pipe with reinforcement shows good agreement. Implementation of the proposed solutions into commercial FE programs is explained.

키워드

과제정보

This work was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) (No. 20206510100030, Development of Repair Technology for Class 2, 3 Large Bore Piping in Operating Nuclear Power Plant).

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