The aim of this study was to explore post-buckling strength potential of two different stiffener types and evaluate structural efficiencies of those by making a comparison. This has been done by first determining the buckling and post-buckling behavior of J- and hat-stiffened composite panels under compression loading. By making a structural efficiency definition, the experimental results of J- and hat-stiffened panels for initial buckling and post-buckled responses of the panels were compared with predicted and analytical results.
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2.
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3.
Falzon, B.G. , Stevens, K.A. and Davies, G.O. (2000). Post-buckling Behavior of a Blade-stiffened Composite Panel in Uniaxial Compression, Composites, Part A: Applied Science and Manufacturing, 31: 459-468.
4.
Elaldi, F., Lee, S. and Scott. R.F. ( 1992). Design, Fabrication and Compression Testing of Stiffened Composite Panels for Aircraft Structures, National Research Center-technical Report: NRC LTR-ST-1872, CA.
5.
Caputo, F., Esposito, R., Perugini, P. and Santoro, D. ( 2002). Numerical-Experimental Investigation on Post-buckled Stiffened Composite Panels, Composite Structures, 55: 347-357.
6.
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7.
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8.
Falzon, B.G. and Steven, G.P. ( 1995). Post-buckling Behavior of Hat-stiffened Thin Skinned Carbon Fiber Composite Panels, In: AIAA/ASME/AHS/ASC: Proceedings of the 36th Structures, Structural Dynamics and Materials Conference , New Orleans, LA, USA.
9.
Singer, J., Arbocz, J. and Weller, T. ( 1998). Experimental Methods in Buckling of Thin-walled Structures , Buckling Experiments, Vol. 1, Wiley, USA.
10.
Stevens, K.A. , Ricci, R. and Davies, G.A.O. (1995). Buckling and Post-buckling of Composite Structures, Composites, 26(3): 189-199.
11.
Stevens, K.A. , Specht, S. and Davies, G.A.O. (1997). Post-buckling Failure of Carbon Epoxy Compression Panels, In: Proceedings of ICCM -11, Gold Coast, Australia.
12.
Falzon, B.G. and Steven, G.P. (1997). Buckling Mode Transition in Hat-stiffened Composite Panels Loaded in Uniaxial Compression, Composite Structures, 37(2): 253-267.
13.
Kong, C.W., Lee, I.C., Kim, C.G. and Hong, C.S. ( 1998). Post-buckling and Failure of Stiffened Composite Panels under Axial Compression, Composite Structures, 42(1): 13-21.
14.
Lee, S. , Elaldi, F., Villalobos, H. and Scott, R.F. (1995). Design and Manufacture of Stiffened Composite Panels, Journal of Science and Engineering of Composite Materials, 4(2): 121-129.
15.
Williams, J.G. and Stein, M. (1976). Buckling Behavior and Structural Efficiency of Open-section Stiffened Composite Compression Panels , The American Institute of Aeronautics and Astronautics Journal , 14(11): 1618-1626.
