Composite Structure Analysis and Optimization

This study develops refined closed-form analytical solutions for accurately determining local buckling coefficients and corresponding critical local buckling stresses of rectangular hollow sections (RHSs) with web-dominant thickness under axial compression. A novel local buckling model is proposed using a reference-se…

This study presents an analytical method for effective cross-section design of cylindrical hollow columns under axial compression, based on the Buckling Postulate–Reference Solid Column approach. The aim is to ensure structural stability while optimising material use. A solid long column with the same material, dimens…

Double-beam systems have attracted significant attention due to their unique mechanical behavior and wide range of engineering applications. This study offers an extensive review of the mechanics and applications of double-beam systems, addressing both theoretical progress and practical uses. Initially, the theoretica…

Axially functionally graded (AFG) tapered beams are increasingly used in lightweight structures where stiffness and mass distributions are tailored along the beam axis. The variable-coefficient buckling equation of such beams precludes closed-form solutions and demands numerical treatment. While the finite element met…

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The use of carbon fiber-reinforced plastic (CFRP) components has increased significantly in civilian aviation, necessitating effective maintenance and repair strategies to ensure durability and performance. While prior studies have focused on composite repair methods, such as stepped scarf patch and bolted joint repai…

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In this study, nonlinear vibrations of a slightly curved Timoshenko beam with nonlinear boundary conditions are investigated. The formulation is developed based on Timoshenko beam theory, incorporating shear deformation and rotary inertia effects. Geometric nonlinearity is introduced through the von Karman strain–disp…

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In this study, nonlinear vibrations of a slightly curved Timoshenko beam with nonlinear boundary conditions are investigated. The formulation is developed based on Timoshenko beam theory, incorporating shear deformation and rotary inertia effects. Geometric nonlinearity is introduced through the von Karman strain–disp…

Bu çalışmada, zamana bağlı açısal hızla dönen bir fonksiyonel dereceli ortotropik değişken kalınlıklı diskin eksenel simetri varsayımı ve düzlem gerilme koşulları altında gerilme dağılımları sayısal olarak elde edilmiştir. Etkisi az olduğu düşünülen Poisson oranı dışındaki malzeme özelliklerinin yarıçap doğrultusunda…

In this study, the axial crushing and energy absorption characteristics of straight and twisted thin-walled tubes with polygonal cross-sections were investigated. The effect of geometric twisting on deformation stability, mean crushing force, crushing force efficiency, and specific energy absorption were analyzed by m…