LIMIT AND SHAKEDOWN ANALYSIS OF NOZZLE CYLINDER INTERSECTIONS UNDER INTERNAL-PRESSURE AND INPLANE MOMENT LOADING/

A simple technique called the elastic compensation method developed pr eviously by Mackenzie & Boyle is used in combination with full three-d imensional finite-element analysis to obtain limit and shakedown inter action 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 ela sto-plastic thin shell finite-element analysis. It is found that the s imple elastic compensation procedure can provide good estimates of pla stic failure mechanisms for complex three-dimensional structures. A de tailed discussion of various issues which arose relates to finite-elem ent modelling and the measures taken to improve the results are also d ocumented. Copyright (C) 1996 published by Elsevier Science Ltd.