Analisis Tekuk Panel Sandwich Dengan U-Beam Corrugated Core Pada Struktur Geladak Kapal

Ahmudia, Ernita Lisyiya (2025) Analisis Tekuk Panel Sandwich Dengan U-Beam Corrugated Core Pada Struktur Geladak Kapal. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Seiring dengan meningkatnya tuntutan terhadap efisiensi dan keselamatan dalam industri maritim, berbagai inovasi struktural terus dikembangkan guna mendukung performa kapal secara menyeluruh. Struktur geladak sebagai salah satu elemen utama kapal memiliki peran penting dalam menahan beban operasional dan lingkungan selama pelayaran. Salah satu permasalahan yang sering muncul adalah fenomena tekuk (buckling) pada panel berpenegar, yang dapat menyebabkan kehilangan kekakuan struktural dan mengganggu integritas kapal secara keseluruhan. Oleh karena itu, pengembangan alternatif struktur yang ringan namun tetap memiliki ketahanan terhadap buckling menjadi fokus dalam desain modern, salah satunya melalui penerapan sandwich panel berinti khusus seperti U-Beam Corrugated Core. Penelitian ini bertujuan untuk menganalisis perilaku sandwich panel terhadap beban aksial, mengkaji pengaruh variasi tinggi core terhadap beban tekuk kritis (Pcr), serta mengevaluasi efisiensi berat dibandingkan panel konvensional. Analisis dilakukan secara numerik dengan metode elemen hingga, menggunakan 6 variasi geometri core. Nilai Pcr dibandingkan dengan gaya ultimate (Fult) untuk menilai kestabilan, dan berat struktur dihitung berdasarkan volume dan massa jenis material. Hasil analisis menunjukkan bahwa semua variasi sandwich panel memiliki nilai Pcr yang lebih tinggi daripada Fult, yang berarti struktur tidak mengalami buckling dalam kondisi pembebanan maksimum. Peningkatan tinggi core menghasilkan peningkatan Pcr hingga lebih dari dua kali lipat dibandingkan variasi terendah. Selain itu, berat sandwich panel tercatat lebih ringan hingga 33% dibandingkan panel berpenegar konvensional, dengan tetap mempertahankan kekuatan struktural. Dengan demikian, efisiensi kekuatan terhadap berat dapat ditingkatkan secara signifikan melalui penggunaan konfigurasi ini.
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In response to increasing demands for efficiency and safety in the maritime industry, various structural innovations have been continuously developed to support overall ship performance. The deck structure, as one of the primary components of a ship, plays a crucial role in withstanding operational and environmental loads during navigation. One common issue encountered is the buckling phenomenon in stiffened panels, which can lead to a loss of structural stiffness and compromise the overall integrity of the vessel. Therefore, the development of alternative structures that are lightweight yet resistant to buckling has become a focus in modern ship design, including the application of sandwich panels with specially designed cores such as the U-Beam Corrugated Core. This study aims to analyze the behavior of sandwich panels under axial compression, evaluate the influence of core height variations on the critical buckling load (Pcr), and assess weight efficiency compared to conventional stiffened panels. The analysis was conducted numerically using the finite element method with six different core geometry variations. The critical buckling load (Pcr) was compared with the ultimate load (Fult) to assess structural stability, and the total weight was calculated based on volume and material density. The results indicate that all sandwich panel variations exhibit Pcr values higher than Fult, confirming that no buckling occurs under the maximum applied load. Increasing the core height resulted in a more than twofold increase in Pcr compared to the lowest variation. Additionally, the weight of the sandwich panel was found to be up to 33% lighter than that of conventional stiffened panels, while maintaining comparable structural strength. Therefore, the strength-to-weight efficiency can be significantly improved through the use of this configuration.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	buckling, sandwich panel, U-beam corrugated core, beban kritis, struktur geladak, efisiensi berat.
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Divisions:	Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis
Depositing User:	Ernita Lisyiya Ahmudia
Date Deposited:	04 Aug 2025 08:12
Last Modified:	04 Aug 2025 08:12
URI:	http://repository.its.ac.id/id/eprint/126070

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