Imperfect spherical cap with stiffening ring subjected to external pressure

• Autorzy: Stredova D. , Tomek P. , Pascenko P.
• Języki publikacji: EN

Abstrakty

EN

The aim of this paper is to perform a detail numerical analysis of both perfect and imperfect spherical caps subjected to an external pressure. The problem is limited to a case of the simply supported imperfect spherical cap stiffened with the circumferential ring at its edge. Both the central and lateral initial imperfection is considered. The main task is to find the reduction factor depending on the thickness parameter R/t. In addition to a theoretical description of this special stability problem, the results serve for a preparation of future experiments with real steel specimens. The finite element geometrically nonlinear computational analyses are performed by means of the computer program COSMOS/M.

Słowa kluczowe

EN

spherical cap; stability; imperfection; buckling; limit pressure

PL

niedoskonałość; ciśnienie graniczne

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2010
• Tom: Vol. 15, no 2
• Strony: 483--490
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr.

Twórcy

autor

Stredova D.

autor

Tomek P.

autor

Pascenko P.

• University of Pardubice, Department of Mechanics Materials and Machine Parts Studentská 95, 532 10 Pardubice 2, CZECH REPUBLIC,

Bibliografia

• Bushnell D. (1985): Computerized Buckling Analysis of Shells. – Dordrecht: Martinus Nijhoff Publishers, ISBN 90-247-3099-6.
• DIN 18800 (1990). Part.4, Structural steelwork. Analysis of safety against buckling of shells. Berlin: German norm. Beuth Verlag GmbH.
• ECCS (1988) Buckling of Steel Shells. European Design Recommendations. Fourth edition, Published by ECCS.
• ECCS (2008) Buckling of Steel Shells. European Design Recommendations. Fifth edition, Published by ECCS, ISBN 92-9147-000-92.
• FEM Computer program COSMOS/M, version 2.95, (2007).
• Geier B. and Esslinger M. (1975): Postbuckling Behavior of Structures. – Wien-New York: Springer-Verlag, ISBN 3-211-81369-1.
• Paščenko P. (2009): Stability of thin-walled structures in transport technology. – Habilitation work. Pardubice: University of Pardubice, Jan Perner Transport Faculty.
• Středová D. and Paščenko P. (2010): Influence of Initial Imperfections on Spherical Caps Subjected to External Pressure. - Bulletin of Applied Mechanics (In print). – Praha: Czech Technical University in Prague, Faculty of Mechanical Engineering. ISSN 1801-1217.
• Volmir A.S. (1963): Stability of elastic systems. – Moskva: State Publishing House of Physical-Mathematical Literature.