Shear buckling of steel foam sandwich panel resting on Pasternak foundation

• Autorzy: Nazarimofrad Ebrahim , Barang Mehdi

Identyfikatory

DOI

10.2478/mme-2019-0025

• Języki publikacji: EN

Abstrakty

EN

The objective of this paper is to assess the inplane shear buckling of a steel foam sandwich panel that relies on elastic Pasternak foundation. The panel is a combination of solid steel face sheets and foamed steel cores. Foamed steel, that is steel with internal voids, provides enhanced bending rigidity and energy dissipation, and also, the potential to reduce local buckling. The Classic plate theory is employed where their governing equations are solved by the Rayleigh-Ritz method. Uniformly distributed in-plane shear loads are applied to the two opposite edges of the panel and all the four edges of the panel are simply supported. Finally, the effects of the panel parameters, such as the existence of a Pasternak foundation, aspect ratios, and central fraction of the steel foam core, are presented. The results showed that the optimum central fraction of the steel foam core would be 65%, so that the maximum critical shear buckling load has taken place.

Słowa kluczowe

EN

shear buckling; steel foam; sandwich panel; Pasternak foundation

PL

wyboczenie przy ścinaniu; piana stalowa; płyta warstwowa; podłoże Pasternaka

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Mechanics and Mechanical Engineering
• Rocznik: 2019
• Tom: Vol. 23, nr 1
• Strony: 192--197
• Opis fizyczny: Bibliogr. 12 poz., il kolor., 1 fot., rys., wykr.

Twórcy

autor

Nazarimofrad Ebrahim

• Department of Civil Engineering, Bu Ali Sina University, Hamedan, Iran

autor

Barang Mehdi

• Department of Civil Engineering, Eslamshar University, Eslamshar, Iran

Bibliografia

• [1] Arwade, S. R., Hajjar, J. F., Schafer, B. F.: Reconfiguring Steel Structures: Energy dissipation and buckling mitigation through the use of steel foams. http://www.steelfoam.org/
• [2] Szyniszewski, S., Smith, B. H., Hajjar, J. F., Arwade, S. R., and Schafer, B. W.: Local buckling strength of steel foam sandwich panels. Thin-Walled Structures 59, 2012, 11-19.
• [3] Libove, C, Butdorf, S. B.: A general small-deflection theory for flat sandwich plates. NACA TN 1526; 1948.
• [4] Reissner, E.: Finite deflections of sandwich plates. Journal of the Aeronautical Science 15(7), 1948, 435-40.
• [5] Plantema, F. J.: Sandwich construction: the bending and buckling of sandwich beams, plates and shells. New York: John Wiley and Sons. 1966.
• [6] Allen, H. G.: Analysis and design of structural sandwich panels. London: Pergamon Press. 1969.
• [7] Magnucka-Blandzi, E.: Dynamic stability of a metal foam circular plate. Journal of Theoretical and Applied Mechanics, 47, 2009, 421-433.
• [8] Winkler, E.: Die Lehre von der Elasticitaet und Festigkeit" Prag, Dominicus, 1867.
• [9] Pasternak, P. L.: On a new method of analysis of an elastic foundation by means of two foundation constants. Gosudarstvennoe Izdatelstvo Literaturi po Stroitelstvu i Arkhitekture, Moscow, 1954.
• [10] Nazarimofrad, E., Barkhordar, A.: Buckling analysis of orthotropic rectangular panel resting on Pasternak elastic foundation under biaxial in-plane loading. Mechanics of Advanced Materials and Structures, 23(10), 2016, 1144-1148.
• [11] Nazarimofrad, E., Zahrai, S. M., Kholerdi, S. E.: Effect of rotationally restrained and Pasternak foundation on buckling of an orthotropic rectangular Mindlin plate. Mechanics of Advanced Materials and Structures, 2017, 1-8.
• [12] Ashby, M. F., Evans, T., Fleck, N. A., Hutchinson, J. W., Wadley, H. N. G., & Gibson, L. J.: Metal foams: a design guide. Elsevier, 2000.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).