Abstract
The elasto-plastic investigations described in this paper have been carried out in order to study the performance of unfired cylindrical steel pressure vessels with hemispherical, torispherical, semi-ellipsoidal and toriconical end closures concave to pressure, using the finite element method. The various aspects covered by the study include spread of plastic zones, load-deflection characteristics, head-height growth characteristics, redistribution of effective stresses, effective plastic strain, limit analysis, excessive deformation and shakedown criteria of pressure vessel design. Based upon the results of this analysis, guidelines for the design of cylindrical pressure vessels are indicated in the form of various non-dimensional curves which will be useful for the better design of pressure vessels.
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