Limit and shakedown analysis of nozzle/cylinder intersections under internal pressure and in-plane moment loading

A simple technique called the elastic compensation method developed previously by Mackenzie & Boyle is used in combination with full three-dimensional finite-element analysis to obtain limit and shakedown interaction diagrams for nozzle/cylinder intersections subject to combined internal pressur...

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Bibliographic Details
Published in:The International journal of pressure vessels and piping 1996, Vol.68 (3), p.261-272
Main Authors: Nadarajah, C., Mackenzie, D., Boyle, J.T.
Format: Article
Language:English
Subjects:
Applied sciences
Cylinders (shapes)
Elasticity
Elastoplasticity
Estimation
Exact sciences and technology
Failure analysis
Finite element method
Loads (forces)
Mechanical engineering. Machine design
Nozzles
Pipings, valves, fittings
Plastic deformation
Pressure effects
Shells (structures)
Steel design
Three dimensional
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Summary:A simple technique called the elastic compensation method developed previously by Mackenzie & Boyle is used in combination with full three-dimensional finite-element analysis to obtain limit and shakedown interaction diagrams for nozzle/cylinder intersections subject to combined internal pressure and in-plane nozzle moment loading. The results are compared with solutions from the literature and also with detailed elasto-plastic thin shell finite-element analysis. It is found that the simple elastic compensation procedure can provide good estimates of plastic failure mechanisms for complex three-dimensional structures. A detailed discussion of various issues which arose relates to finite-element modelling and the measures taken to improve the results are also documented.
ISSN:0308-0161
1879-3541
DOI:10.1016/0308-0161(95)00064-X