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Erschienen in: Mechanics of Composite Materials 3/2023

06.07.2023

Investigation Method of the Static Strength of Structurally-Anisotropic Composite Panels According to a Refined Theory

verfasst von: L. M. Gavva, V. V. Firsanov

Erschienen in: Mechanics of Composite Materials | Ausgabe 3/2023

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Abstract

The stress-strain state of structurally-anisotropic composite panels was investigated analytically by a refined theory within the framework of a multidisciplinary approach. New mathematical models for examining the stress-strain state of flat rectangular multilayered composite panels with an eccentric assembly of longitudinal and transverse stiffening ribs were proposed. It was refined the work of the stiffener under one-sided contact with the skin. The novelty of the theory of thin-walled elastic panels developed consists in considering the contact problem for the skin and stiffening rib. The flat skins from high-modulus composites anisotropic due to nonsymmetric layup across the thickness were also considered. In addition, the influence of residual thermal stresses was taken into account. Resolving equations of eighth- and eighteenth-order linear differential operators and natural boundary conditions were obtained using the energy approach. The solution of boundary-value problems in a closed form was performed in single trigonometric series for a particular case of consistent boundary conditions along two opposite edges. The boundary conditions at the ends correspond to a fairly general interpretation of the physical boundary conditions of the structural elements. Package of computer codes was developed is the MATLAB software. The new mathematical models and fast procedures for numerical solutions can be useful for designing the panels from advanced composites for the prospective aviation products.

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Metadaten
Titel
Investigation Method of the Static Strength of Structurally-Anisotropic Composite Panels According to a Refined Theory
verfasst von
L. M. Gavva
V. V. Firsanov
Publikationsdatum
06.07.2023
Verlag
Springer US
Erschienen in
Mechanics of Composite Materials / Ausgabe 3/2023
Print ISSN: 0191-5665
Elektronische ISSN: 1573-8922
DOI
https://doi.org/10.1007/s11029-023-10115-9

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