Metallic Shell Parametric Study for Crush Behavior / Metal Kabuk Ezilme Davranışı Üzerine Parametrik Çalışma

Ram Ranjan Sahu
2.849 497

Abstract


The shell structures are the choice for structural application due to their weight to cost ratio. They are widely used in energy absorption in case of crash and impact events. The shells are widely used in automotives, nose cone of planes, war heads etc. The response of this shell structure are quite complex for loadings. The response depends on the geometry of the shell. This geometry could be a combination of many basics shape. The study was planned on basic shape like cylinder, combined geometry of cylinder and frusta and on geometry with special features. The force displacement graphs were discussed in details. The energy absorption capacities of the geometries were discussed. The analytical approach was also used to simulate the experiment.

Özet: Kabuk yapıları yapısal uygulamalarda ağırlıklarına göre maliyetlerinden dolayı bir seçim olmaktadır. Bu yapılar çarpışma ve darbe durumlarında enerji sönümlemede yaygın olarak kullanılmaktadır. Bu kabuklar otomotivde, uçakların burun kısımlarında ve savaş başlıklarında ve buna benzeri yerlerde sıkça kullanılmaktadır. Bu kabuk yapısının yüklere karşı oluşturduğu tepkiler oldukça karmaşıktır ve tepkiler kabuk geometrisine bağlıdır. Çok çeşitli temel biçimlerin kombinasyonu olarak geometriler oluşabilir. Bu çalışma silindir gibi temel bir şekil, silindir ve kesik koni gibi kendine has özellikleri olan bir kombinasyon üzerine planlandı. Kuvvet yer değiştirme grafikleri ayrıntılı olarak ele alındı. Geometrilerin enerji emilimi kapasiteleri incelendi. Analitik yaklaşım aynı zamanda deneyleri simüle etmek için kullanılmıştır.

Keywords


Geometrical shell, Apical angle, Large Deformations, Energy absorption, load-deflection, Finite Element analysis / Geometric kabuk, Apikal açı, Büyük deformasyonlar, Enerji emilimi, Yük-çökme, sonlu elemanlar

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DOI: http://dx.doi.org/10.18245/ijaet.08579

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