Antisimetrik Fiber Metal Laminat Plakaların Titreşim Davranışları

Year 2023, Volume: 9 Issue: 2, 264 - 276, 31.08.2023

Sinan Maraş , Mustafa Yaman

Abstract

Bu çalışmada, Fiber Metal Laminat (FML) kompozit malzemenin serbest titreşim analizi sayısal olarak gerçekleştirilmişir. FML'ler, karbon/epoksi (CARALL), cam/epoksi (GLARE) veya aramid/epoksi (ARALL) gibi fiber takviyeli polimer kompozitlerden oluşan ve alüminyum levhalarla desteklenen hibrit yapılar olarak tanımlanmaktadır. Diferansiyel kuadratür (DQ) yöntemiyle modellenen FML kompozit yapıların titreşim parametreleri belirlenmiştir. Modelin doğruluğunu kanıtlamak için elde edilen doğal frekanslar deneysel yöntemle elde edilen sonuçlarla karşılaştırılmıştır. Antisimetrik karbon ve cam fiberlerinin yönlenme açılarının FML levhalarının düzlem içi titreşim özellikleri üzerindeki etkisi çeşitli sınır koşulları altında sayısal olarak incelenmiştir. Aynı sınır koşulu ve konfigürasyon durumları için CARALL kompozitin birinci doğal frekans değeri 297.62 Hz olarak bulunmuştur, GLARE kompozitin ise doğal frekans değeri 236.59 Hz olarak hesaplanmıştır. Ayrıca, Al/C/G/C/Al gibi hibrit tabaka dizilimine sahip FML'nin doğal frekans değeri 278.49 Hz olarak elde edilmiştir ve bu değer, Al/G/C/G/Al dizilimi için elde edilen 254.46 Hz doğal frekans değerinden daha yüksektir. Araştırmanın bir diğer önemli sonucu, tüm FML'lerde en yüksek doğal frekanslar CCCC sınır koşulunda görülmüştür.

Keywords

Diferansiyel kareleme yöntemleri, fiber metal laminat kompozit, titreşim analizi

Vibration Behaviors of Antisymmetric Fiber Metal Laminated Composite Plates

Abstract

In this study, free vibration analysis of Fiber Metal Laminated (FML) composite, which is one of the frequently preferred materials in the automotive, aircraft and aerospace industry due to its light weight, durability, good fatigue and corrosion resistance, was performed numerically. The FMLs are hybrid structures composed of fiber-reinforced polymer composites such as carbon/epoxy (CARALL), glass/epoxy (GLARE), or aramid/epoxy (ARALL) with aluminum sheets. The vibration parameters of the FML composite structures modeled by differential quadrature (DQ) methods have been determined. The natural frequencies obtained to prove the accuracy of the model are compared with the results obtained by experimental method. The effects of the change in the orientation angles of the antisymmetric carbon and glass fibers on the in-plane vibration properties of the FML plates under various boundary conditions were numerically investigated. Numerical analyzes were carried out parametrically. Finally, the most important layer configurations that are effective in the vibration characteristics of the hybrid structure have been obtained.

Keywords

Differential Quadrature Methods, Fiber Metal Laminated Composite, Vibration analysis.

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