Engineering Transactions, 61, 3, pp. 173–184, 2013
10.24423/engtrans.14.2013

Structural Behavior of Sandwich Panels with External Deep-Profiled and Internal Soft Facing

Zbigniew POZORSKI
Poznan University of Technology, Institute of Structural Engineering, Poznań
Poland

Rafał SÓL
Poznan University of Technology, Institute of Structural Engineering, Poznań
Poland

Jacek SZAJDA
Poznan University of Technology, Institute of Structural Engineering, Poznań
Poland

Jolanta BŁASZCZUK
Czestochowa University of Technology, Institute of Mathematics, Częstochowa
Poland

Sandwich panels made of deep-profiled steel facesheet, thick and soft PUR core and thin aluminum facesheet are considered. The structural behavior of the panel in two arrangements is analyzed by the way of real experiments. Three-point bending tests were carried out. The laboratory tests unraveled non-linear characteristics of structural behavior. The local instability of the compressed faces was observed. The real experiments were compared with the results of numerical simulations.
Keywords: sandwich panels; PUR core; soft facing; experimental analysis, three-point bend- ing; failure mechanisms
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Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).

References

Chuda-Kowalska M. et al., Experimental determination of shear rigidity of sandwich panels with soft core, Proc. of 10th International Conference Modern Buildings Materials, Structures and Techniques, Vol. I, P. Vainiunas and E.K. Zavadskas [Eds.], Vilnius, Lithuania, VGTU, 56–63, 2010.

Chuda-Kowalska M., Garstecki A., Determination of materials constants for sandwich panels with PUR core [in Polish: Wyznaczanie stałych materiałowych dla płyt warstwowych z rdzeniem PUR], Przegląd budowlany, 3, 67–72, 2012.

Daniel I.M., Gdoutos E.E., Wang K.-A., Abot J.L., Failure modes of composite sandwich beams, Int. J. Damage Mechanics, 11, 309–334, 2002.

Davies J.M., Light Weight Sandwich Construction, Blackwell Science, 2001.

Gdoutos E.E., Daniel I.M., Wang K.-A., Compression facing wrinkling of composite sandwich structures, Mechanics of materials, 35, 511–522, 2003.

Huang J.S. et al., Creep of sandwich beams with polymer foam cores, Journal of Materials in Civil Engineering, 2, 3, 171–182, 1990.

Jasion P., Magnucki K., Face wrinkling of sandwich beams under pure bending, Journal of Theoretical and Applied Mechanics, 50, 4, 933–941, 2012.

Juntikka R., Hallstorm S., Shear characterization of sandwich core materials using four-point bending, Journal of Sandwich Structures and Materials, 9, 1, 67–94, 2007.

L´eotoing L., Drapier S., Vautrin A., Nonlinear interaction of geometrical and material properties in sandwich beam instabilities, Int. J. Solid and Structures, 39, 3717–3739, 2002.

McCormack T., Miller R., Kesler O., Gibson L., Failure of sandwich beams with metallic foam cores, Int. J. of Solids and Structures, 38, 4901–4920, 2001.

Sól R., Szajda J., Stress and strain analysis in sandwich panels with one metal facing subjected to bending [in Polish: Analiza stanu naprężenia i odkształcenia w zginanych płytach warstwowych z jednostronną okładziną stalową], Poznan University of Technology, 2012.

Steeves C.A., Fleck N.A., Collapse mechanisms of sandwich beams with composite faces and a foam core, loaded in three-point bending. Part II: experimental investigation and numerical modelling, Int. J. of Mechanical Sciences, 46, 585–608, 2004.

Thomsen O.T., Frostig Y., Localized bending effects in sandwich beams: photoelastic investigations versus high-order sandwich theory results, Composite Structures, 37, 97– 108, 1997.

Wang C.M., Reddy J.N., Lee K.H., Shear deformable beams and plates, Elsevier, 2000.

Zang S., Dulieu-Barton J.M., Fruehmann R.K., A methodology for obtaining material properties of polymeric foam at elevated temperatures, Experimental Mechanics, 52, 1, 3–15, 2012.

Zenkert D., An Introduction to sandwich construction, Chameleon Press Ltd., London, 1995.




DOI: 10.24423/engtrans.14.2013