Abstract
The purpose of the work is the realization of a composite material with long glass fibers having better characteristic than a fiber random composite, to permit the reduction of weight and costs to shipyards for pleasure craft. Structural optimization is performed by ANSYS for the choice of the layers disposition to obtain the maximum stiffness with minimum material employment, saving weight. The study is centered on the research of the better configurations of plies packing in relation of pure shear stress for four different plies. Unidirectional plies, both symmetric orthotropic and symmetric non-orthotropic ones, are realized successively by the vacuum bag technique. Experimental tests of traction, bending, inter laminar shear and pure shear are executed to characterize the three different type of material. Experimental results are compared to ones obtained numerically to validate the procedures; the comparison with the analytical results permitted to attribute an adequate value to shape factor of the fibers. In all the cases the optimization permitted the construction of much more resistant plies than random ones, with a lower thickness.
Similar content being viewed by others
References
Lombardo D, Marannano G, Virzì Mariotti G Cirello A. (2004) Characterisation of fibre glass panels for naval use. In: ICEM12, 12th international conference on experimental mechanics, Politecnico di Bari, Italy, 29 August–2 September 2004
ASTM D3039/D3039M-93 (1994) Standard test method for tensile properties of polymer matrix composite materials. American Society for Testing and Materials, West Conshohocken
UNI EN 2562 (1998) Prova di flessione parallela alla direzione delle fibre. Unavia
UNI EN 2563 (1997) Determinazione della resistenza apparente al taglio interlaminare. Unavia
ASTM D4255-83 (1983) Standard guide for testing inplane shear properties of composites laminates. American Society for Testing and Materials, West Conshohocken, PA
Ansys inc., User manual, element description, theory reference
Barbero EJ (1999) Introduction to composite materials design. Taylor and Francis, Bristol
Kelly A, Zweben C (2000) Compr Compos Mater 5:142–144
Whitney JM, Daniel IM, Pipes RB (1989) Experimental mechanics of fiber reinforced composite materials. Technomic Publishing Company, Lancaster
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Marannano, G., Mariotti, G.V. Structural optimization and experimental analysis of composite material panels for naval use. Meccanica 43, 251–262 (2008). https://doi.org/10.1007/s11012-008-9120-z
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11012-008-9120-z