This paper presents work that has been carried out to extract leakage rates from finite element models. The benefit of using a more sophisticated leak rate model in combination with finite elements is the increased accuracy in leakage rate calculation for more complex crack shapes and loading conditions. The methodology involves extracting the crack opening displacement (COD) from the Extended Finite Element Method (XFEM) and standard finite elements, then outputting the data to an Excel spreadsheet. A polynomial is then fitted to the data and this is inputted into a MATHCAD code which calculates leakage rate using the Ordinary Differential Equation (ODE) model developed in a previous paper. Test cases were considered which were based on a thick plate with a central crack under various loading conditions. These included primary membrane loading, through-wall bending, and a residual-stress field. The through wall bending and residual stress fields were induced from a temperature field imposed on the plate. A difference of 20% in leak rate is observed between results from the DAFTCAT (Reference 1) code and the ODE method for the residual stress field considered. The paper concludes with recommendations for improved guidance in R6 Section III.11 (Reference 2) for cases when complex crack shapes and loading are present.
Skip Nav Destination
Close
Sign In or Register for Account
ASME 2016 Pressure Vessels and Piping Conference
July 17–21, 2016
Vancouver, British Columbia, Canada
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5042-8
PROCEEDINGS PAPER
Leakage Rates Through Non-Linear Through Wall Cracks Obtained From Finite Element Analysis
Peter Gill,
Peter Gill
Amec Foster Wheeler, Warrington, UK
Search for other works by this author on:
Peter Budden
Peter Budden
EDF Energy, Barnwood, UK
Search for other works by this author on:
Peter Gill
Amec Foster Wheeler, Warrington, UK
Mike Ford
Amec Foster Wheeler, Warrington, UK
Peter Budden
EDF Energy, Barnwood, UK
Paper No:
PVP2016-63534, V06AT06A074; 8 pages
Published Online:
December 1, 2016
Citation
Gill, P, Ford, M, & Budden, P. "Leakage Rates Through Non-Linear Through Wall Cracks Obtained From Finite Element Analysis." Proceedings of the ASME 2016 Pressure Vessels and Piping Conference. Volume 6A: Materials and Fabrication. Vancouver, British Columbia, Canada. July 17–21, 2016. V06AT06A074. ASME. https://doi.org/10.1115/PVP2016-63534
Download citation file:
- Ris (Zotero)
- Reference Manager
- EasyBib
- Bookends
- Mendeley
- Papers
- EndNote
- RefWorks
- BibTex
- ProCite
- Medlars
Close
Sign In
14
Views
0
Citations
Related Proceedings Papers
Related Articles
Strong Formulation Finite Element Method Based on Differential Quadrature: A Survey
Appl. Mech. Rev (March,2015)
Trefftz Finite Element Method and Its Applications
Appl. Mech. Rev (September,2005)
Surface Feature Parametrization Analogous to Conductive Heat Flow
J. Comput. Inf. Sci. Eng (June,2002)
Related Chapters
Fundamentals of Finite Element and Finite Volume Methods
Compact Heat Exchangers: Analysis, Design and Optimization using FEM and CFD Approach
Data Tabulations
Structural Shear Joints: Analyses, Properties and Design for Repeat Loading
List of Commercial Codes
Introduction to Finite Element, Boundary Element, and Meshless Methods: With Applications to Heat Transfer and Fluid Flow