Design by analysis of ductile failure and buckling in torispherical pressure vessel heads

Abstract

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Investigation of the Effects of Geometric and Load Perturbation to Buckling in Multilayered Torispherical Pressure Vessel Heads

“…In this paper large deformation analysis are applied to geometric and load perturbation models and no perturbation model. The pressure deformation graph for no perturbation model which is also presented by Mackenzie et al [17] is given in Fig. 4.…”

“…For the analyses of multilayered thin walled torispherical head, multilayered version of the geometry investigated previously by Miller et al [18] and Galletly and Blachut [19] and Mackenzie et al [17] is considered. The two layered configuration of geometry of torispherical head is given in Fig.…”

“…For perturbation force model, similar to Mackenzie et al [17], 2kN perturbation forces are used which are applied normal to the mid-section of the knuckle region of each quadrant, as shown in Fig. 2.…”

“…Mackenzie et al made an extensive review on the descriptions of the EN13445 and ASME Boiler and pressure vessel code contents [17]. The ASME Twice Elastic Slope (TES), criterion uses an empirical procedure for calculating collapse loads in experimental stress analysis of pressure vessels.…”

“…In their study both ASME TES and plastic work criteria (PWC) are considered. The PWC criterion requires a plot of load against normalized load-plastic work curvature [17].…”