Sandviç Uzun Dikdörtgen Plakların Statik Çökmelerinin Analizi

Yıl 2018, Cilt: 4 Sayı: 1, 57 - 66, 30.04.2018

Erkin Altunsaray

Öz

Bu çalışmada düzgün yayılı yanal yük etkisindeki sandviç
uzun dikdörtgen plakların statik çökmeleri incelenmiştir. Yüzey malzemesi
olarak farklı sıralanmış simetrik katmanlı kuazi-izotropik (yarı izotropik)
karbon/epoksi malzeme ve öz (çekirdek) malzemesi için ise balsa ağacı
seçilmiştir. Plak kenarlarının ankastre ve basit mesnetlenmiş halleri
incelenmiştir. Öz malzemesinin ve dış cidarların kalınlığına, dış cidarların
farklı katman dizilimine ve sınır koşullarına sahip sandviç plakların maksimum
çökmeleri, uzun plak yaklaşımıyla incelenmiştir. Sonuçlar, Sonlu Elemanlar
Yöntemi (SEY) temelli nümerik çalışmayla karşılaştırılmış ve birbirini
sağlamıştır. Aynı ağırlığa sahip sandviç plakların maksimum çökmeleri
araştırılmış, öz malzemesinin ince dış cidarların kalın olduğu durumda maksimum
çökmeler daha fazla bulunmuştur.

Anahtar Kelimeler

Maksimum çökme, Parametrik çalışma, Sandviç plaklar

Static Deflections Analysis of Long Rectangular Sandwich Plates

Öz

In this study, static deflections of laterally loaded long
rectangular sandwich plates were investigated. Symmetrically laminated
quasi-isotropic carbon/epoxy plates were used for the face sheets (skins) and balsa
wood for the core. Boundary conditions were considered as simply supported and
clamped. Maximum deflections were obtained for the parameters such as
thicknesses of core material and face sheets, lamination sequences of face
sheets and boundary conditions in long plate approximation. Results were
compared with those of numerical study based on Finite Element Method and found
in good agreement. Maximum deflections of sandwich plates in same weight were
investigated too and found larger at the thin core and thick face sheets
condition.

Anahtar Kelimeler

Maximum deflection, Parametric study, Sandwich plates

Kaynakça

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