Identyfikatory
Warianty tytułu
Języki publikacji
Abstrakty
The paper concerns the problem of calculation of the maximum horizontal forces that a floating ice cover can exert on isolated, vertical-walled, engineering structures. The analysis is carried out on the assumption that the largest possible force which can occur in a floating ice plate is determined by the elastic buckling failure mechanism. Hence, the buckling loads of a semi-infinite, wedge-shaped in-plane, thin elastic plate resting on a liquid base and pressing against a rigid structure of a limited width, are evaluated. The problem is solved by applying the finite-element method. The results of numerical calculations illustrate the variation of the buckling force with the thickness of ice, the width of the structure, the angle defining the in-plane shape of the plate, and the type of boundary conditions at the ice-structure contact zone. The comparison of the results obtained in this work with those given by approximate analytic estimates available in literature, has shown that the latter considerably overestimate the bearing capacity of ice, therefore new relations are proposed in this paper.
Słowa kluczowe
Rocznik
Tom
Strony
17--35
Opis fizyczny
Bibliogr. 14 poz., il.
Twórcy
autor
- Institute of Hydro-Engineering of the Polish Academy of Sciences, ul. Waryńskiego 17, 71-310 Szczecin, Poland
Bibliografia
- Hutter K. (1975), Floating sea ice plates and the significance of the dependence of the Poisson ratio on brine content, Proc. Land. A 343 (1632), 85-108
- Hutter K. (1983), Theoretical Glaciology. Materiał Science oflce and the Mechanics of Glaciers and Ice Sheets, Reidel, Dordrecht.
- Kerr A. D. (1978), On the determination of horizontal forces a floating ice paeexerts on a structure, J. GlacioL 20 (82), 123-134. .
- Kerr A. D., Palmer W. T. (1972), The deformation and stresses in floating ice plates, Acta Mech. 15, 57-72. . j
- Mellor M. (1980), Mechanical properties of. polyctystalhne ice, In: Mechanics oflce, Proc. IUTAM Symp. Copenhagen 1979 (ed. P.ry ), pp 217-245, Springer, Berlin.
- Nanthikesan S„ Shyam Sunder S. (1994), Anisotropic elasticity of polycrystame ice Ih. Cold. Reg. Sci. Technol 22 (2), 149-169.
- Nevel D E (1980), Bending and buckling of a wedge on an elastic foundation In Physics and Mechanics oflce, Proc. IUTAM Symp. Copenhagen 1979 (ed. P. Tryde), pp. 278-288, Springer, Berlin.
- Sanderson T. J. O. (1988), Ice Mechanics. Risks to Offshore Structures. Graham and Trotman, London
- Schwarz L, Weeks W. F. (1977), Engineering properties of sea ice. J. Glaciol 19 (81), 499-531.
- Sinha N. K. (1989), Elasticity of natural types of polycrystaline ice. Cold Reg. Sci. Technol. 17 (2), 127—135.
- Sodhi D. S„ Haynes F. D„ Kato K., Hirayama K. (1983) Experimental determination of the buckling loads of floating ice sheets. Ann. Glactol. 4, 261F
- Staroszczyk R. (2001), Mechanical properties of sea ice:and their constitutive descriptions, Arch. Hydroeng. Environ. Mech. 48 (1), 63-95
- Timoshenko S„ Woinowsky-Krieger S. (1959), Theory of Plates and Shells. McGraw-Hill, New York, 2nd edn
- Zienkiewicz O. C. and Taylor R. L. (1989), The Finite Element Method, vol. 1. McGraw-Hill, London, 4th edn.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BAT3-0020-0007
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