High Speed Impact Response of Alumina (Al2O3) Reinforced Honeycomb Core Sandwich Panels: Numerical Analysis Study

Abstract

In addition to many other factors, robustness, and lightness are two fundamental and indispensable elements in the design of ballistic protection. The importance of these two factors increases even more in armor designs developed to protect against external threats, especially in vehicles for the defense industry. It is a great necessity to consider armor properties in the design of static structures as well as in moving and dynamic structures. These sandwich panels, which are produced in different models, thicknesses, and geometries, have been the subject of extensive research in terms of performance and effectiveness, and many detailed studies have been conducted in the literature. The solutions offered by sandwich panels not only increase mechanical durability but also make significant contributions to energy efficiency and lifetime by minimizing the weight load of structures. Therefore, the optimization of sandwich panels used in armor systems is considered an innovative field of study in engineering, both theoretically and practically. In this paper, the mechanical behavior of honeycomb sandwich panels consisting of 304 stainless steel surface layers and 304 stainless steel and Aluminum Alloy (AA 3003) cores against high-speed penetrator impact is investigated. Also, the effect of different core materials on the performance is emphasized.

Keywords

• Honeycomb sandwich panels
• High velocity impact resistance
• Core material behavior
• Perforation resistance
• Penetrator behavior
• Finite element analysis (FEM).

Alümina (Al2O3) Takviyeli Petek Çekirdekli Sandviç Panellerin Yüksek Hızlı Darbe Tepkisi: Sayısal Analiz Çalışması

Öz

Balistik koruyucu tasarımında, çok sayıda faktörün yanı sıra, sağlamlık ve hafiflik iki temel ve vazgeçilmez unsur olarak öne çıkmaktadır. Özellikle savunma sanayine yönelik araçlarda, dış tehditlere karşı koruma sağlamak amacıyla geliştirilen zırh tasarımlarında bu iki faktörün önemi daha da artmaktadır. Hareketli ve dinamik yapılarda olduğu kadar, statik yapıların tasarımında da zırh özelliklerinin dikkate alınması büyük bir gerekliliktir. Farklı modellerde, kalınlıklarda ve geometrilerde üretilen bu sandviç paneller, performans ve etkinlik açısından geniş bir araştırma konusu oluşturmuş, literatürde bu konuda çok sayıda detaylı çalışma yapılmıştır. Sandviç panellerin sunduğu çözümler, yalnızca mekanik dayanıklılığı artırmakla kalmaz, aynı zamanda yapıların ağırlık yükünü minimize ederek enerji verimliliğine ve kullanım ömrüne de önemli katkılarda bulunur. Bu nedenle, zırh sistemlerinde kullanılan sandviç panellerin optimizasyonu, mühendislikte hem teorik, hem de pratik açıdan yenilikçi bir çalışma alanı olarak kabul edilmektedir. Bu makalede, 304 paslanmaz çelik yüzey tabakaları ile 304 paslanmaz çelik ve Alüminyum Alaşım (AA 3003) çekirdeklerden oluşan balpeteği sandviç panellerin yüksek hızlı penetratör çarpmasına karşı mekanik davranışları incelenmiştir. Ayrıca, farklı çekirdek malzemelerinin performansa etkisi vurgulanmıştır.

Anahtar Kelimeler

• Petek sandviç paneller
• Yüksek hızlı darbe direnci
• Çekirdek malzeme davranışı
• Perforasyon direnci
• Penetratör davranışı
• Sonlu elemanlar analizi (FEM).

Kaynakça

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