2016 №08 (08) DOI of Article
2016 №08 (01)

Automatic Welding 2016 #08
Avtomaticheskaya Svarka (Automatic Welding), #8, 2016, pp. 58-62
Calculation of two-layer billet of spherical bottoms for high-pressure vessels

A.S. Prokofiev1, R.S. Gubatyuk1, A.F. Muzhichenko1 and V.N. Baranovsky2
1E.O. Paton Electric Welding Institute, NASU, 11 Kazimir Malevich Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua
2Ternopol Ivan Puluj National Technical University, Ministry of Education and Science of Ukraine, 56 Russkaya Str., 46001, Ternopol, Ukraine
The article presents the materials of calculations of circumferential stresses and radial displacements in the wall of two-layer spherical bottom. Three models of bottoms were considered, where different combinations of materials for manufacture of shell layers are used. The rational layer thicknesses, circumferential stresses and radial displacements were determined, which formed in them in the ranges of elastic deformations at different combinations of materials of shell layers. The determination of circumferential stresses was carried out by calculation method according to the analytical dependences and by the method of computer simulation. The application of material with higher strength properties in manufacture of the outer shell leads to the effective loading of their common wall, reduction in its thickness and, correspondingly, increase in its inner stresses and, eventually, in the rational loading. 10 Ref., 4 Tables, 3 Figures.
Keywords: welded structure, two-layer shell, spherical bottom, calculation model, stresses, deformations, welded vessels
Received:                22.12.15
Published:               03.10.16
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