Efficient elastic stress analysis method for piping system with wall-thinning and reinforcement

Ji Su Kim, Je Hoon Jang, Yun Jae Kim

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)732-740
Number of pages9
JournalNuclear Engineering and Technology
Issue number2
Publication statusPublished - 2022 Feb

Bibliographical note

Funding Information:
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).

Publisher Copyright:
© 2021 Korean Nuclear Society


  • Efficient piping system stress analysis
  • Elastic stiffness
  • Wall-thinned pipe with reinforcement

ASJC Scopus subject areas

  • Nuclear Energy and Engineering


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