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Fast Three-Dimensional Finite Element Analysis of Weld Overlay Application on a Formed Feeder Elbow

[+] Author Affiliations
Francis H. Ku

Structural Integrity Associates Inc., San Jose, CA

Pete C. Riccardella

Structural Integrity Associates Inc., Centennial, CO

Paper No. PVP2011-57368, pp. 1459-1468; 10 pages
doi:10.1115/PVP2011-57368
From:
  • ASME 2011 Pressure Vessels and Piping Conference
  • Volume 6: Materials and Fabrication, Parts A and B
  • Baltimore, Maryland, USA, July 17–21, 2011
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-4456-4
  • Copyright © 2011 by ASME

abstract

This paper presents a fast finite element analysis (FEA) model to efficiently predict the residual stresses in a feeder elbow in a CANDU nuclear reactor coolant system throughout the various stages of the manufacturing and welding processes, including elbow forming, Grayloc hub weld, and weld overlay application. The finite element (FE) method employs optimized FEA procedure along with three-dimensional (3-D) elastic-plastic technology and large deformation capability to predict the residual stresses due to the feeder forming and various welding processes. The results demonstrate that the fast FEA method captures the residual stress trends with acceptable accuracy and, hence, provides an efficient and practical tool for performing complicated parametric 3-D weld residual stress studies.

Copyright © 2011 by ASME

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