Sandviç Uzun Dikdörtgen Plakların Statik Çökmelerinin Analizi

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

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.

Keywords:

Maximum deflection, Parametric study, Sandwich plates,

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