Analyses and preliminary tests of a balsa sandwich core with improved shear properties

End grain balsa is a common core material in sandwich structures. The main properties of interest of a sandwich core, in particular for marine applications, are the shear stiffness and shear strength. The end grain arrangement does not fully utilize the anisotropy of balsa wood for the benefit of sh...

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Veröffentlicht in:	International journal of mechanical sciences 2003-08, Vol.45 (8), p.1327-1346
Hauptverfasser:	Grenestedt, Joachim L., Bekisli, Burak
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Balsa End grain balsa Exact sciences and technology Fundamental areas of phenomenology (including applications) Physics Polymer industry, paints, wood Sandwich core Shear stiffness Solid mechanics Static elasticity Static elasticity (thermoelasticity...) Structural and continuum mechanics Wood Wood. Paper. Non wovens
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container_title	International journal of mechanical sciences
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creator	Grenestedt, Joachim L. Bekisli, Burak
description	End grain balsa is a common core material in sandwich structures. The main properties of interest of a sandwich core, in particular for marine applications, are the shear stiffness and shear strength. The end grain arrangement does not fully utilize the anisotropy of balsa wood for the benefit of shear properties. A new arrangement of balsa blocks in a sandwich core was developed and numerically analyzed. This new core, which consisted of an assembly of oddly shaped balsa blocks, allowed the grains in various balsa blocks to be oriented for example at 45° to the normal of the core. The effective out-of-plane shear stiffness was isotropic. Numerical analyses predicted a superior shear stiffness, which was confirmed by preliminary tests.
doi_str_mv	10.1016/j.ijmecsci.2003.09.016
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The main properties of interest of a sandwich core, in particular for marine applications, are the shear stiffness and shear strength. The end grain arrangement does not fully utilize the anisotropy of balsa wood for the benefit of shear properties. A new arrangement of balsa blocks in a sandwich core was developed and numerically analyzed. This new core, which consisted of an assembly of oddly shaped balsa blocks, allowed the grains in various balsa blocks to be oriented for example at 45° to the normal of the core. The effective out-of-plane shear stiffness was isotropic. 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Numerical analyses predicted a superior shear stiffness, which was confirmed by preliminary tests.</description><subject>Applied sciences</subject><subject>Balsa</subject><subject>End grain balsa</subject><subject>Exact sciences and technology</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Physics</subject><subject>Polymer industry, paints, wood</subject><subject>Sandwich core</subject><subject>Shear stiffness</subject><subject>Solid mechanics</subject><subject>Static elasticity</subject><subject>Static elasticity (thermoelasticity...)</subject><subject>Structural and continuum mechanics</subject><subject>Wood</subject><subject>Wood. Paper. 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subjects	Applied sciences Balsa End grain balsa Exact sciences and technology Fundamental areas of phenomenology (including applications) Physics Polymer industry, paints, wood Sandwich core Shear stiffness Solid mechanics Static elasticity Static elasticity (thermoelasticity...) Structural and continuum mechanics Wood Wood. Paper. Non wovens
title	Analyses and preliminary tests of a balsa sandwich core with improved shear properties
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