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.
Bibliographical noteFunding 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).
© 2021 Korean Nuclear Society
- Efficient piping system stress analysis
- Elastic stiffness
- Wall-thinned pipe with reinforcement
ASJC Scopus subject areas
- Nuclear Energy and Engineering