Analytical Modeling to Predict the Strain Energy of Circular GLARE Fiber-Metal Laminates Under Lateral Indentation

This article deals with the strain energy calculation of thin circular clamped Glass Reinforced (GLARE) fiber-metal laminates subjected to static indentation by a lateral hemispherical indentor. Using one-, two- and three-parameter Ritz approximations, analytical equations of the strain energy as a...

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Veröffentlicht in:材料科学与工程:中英文A版 2013, Vol.3 (8), p.569-583
1. Verfasser: George J. Tsamasphyros George S. E. Bikakis
Format: Artikel
Sprache:chi
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Zusammenfassung:This article deals with the strain energy calculation of thin circular clamped Glass Reinforced (GLARE) fiber-metal laminates subjected to static indentation by a lateral hemispherical indentor. Using one-, two- and three-parameter Ritz approximations, analytical equations of the strain energy as a function of the central plate deflection are derived. Previously published analytical formulas, concerning the load-indentation response of circular GLARE plates, are used in order to determine the Ritz parameters and the first failure load and deflection due to tensile fracture of glass-epoxy layers. In this study, the membrane and bending strain energy components of aluminum and prepreg layers are determined. Also, the elastic and plastic strain energy absorbed during the indentation loading are calculated. The derived formulas are applied successfully for GLARE 2-2/1-0.3, GLARE 3-3/2-0.4 and GLARE 31 (special lay-up) circular plates subjected to lateral indentation. The strain energy results converge satisfactor
ISSN:2161-6213