Studi Numerik Pelat Lengkung Berpenegar pada Struktur Kapal Berbahan Baja ASTM A36

Lumempouw, Nicodema Jermaine (2024) Studi Numerik Pelat Lengkung Berpenegar pada Struktur Kapal Berbahan Baja ASTM A36. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dalam industri maritim, daya tahan dan kinerja struktural penting bagi kapal. Baja ASTM A36 dipilih karena ketersediaan dan biaya. Analisis lebih mendalam mengenai kekuatan dan kekakuan pelat lengkung berpenegar dengan baja ASTM A36 diperlukan untuk beban tekuk kompleks. Kekuatan tekan juga kritis untuk struktur penegar lambung. Studi tekuk dan plastisitas pelat dengan kompleksitas struktural perlu. Penelitian sebelumnya telah membahas penggunaan pelat melengkung berpenegar dalam lambung kapal. Melalui pendekatan numerik, penelitian ini bertujuan memahami mekanika struktural serta beban maksimal yang dapat ditahan pada penggunaan pelat lengkung berpenegar. Studi ini menggunakan dimensi pelat 800x400x6 mm dan radius lengkung 2000 mm serta penegar jenis flat bar berdimensi 800x71x6 mm. Hasil dari 5 skema simulasi rata-rata pengurangan panjang sebesar 0,065 mm dengan perbedaan -94% dibanding eksperimen dan deformasi searah sumbu z sebesar 1,939 dengan perbedaan 100% terhadap eksperimen. Tegangan maksimal hasil simulasi memiliki rata- rata sebesar 129,886 MPa dan beban maksimal sebesar 367.057 kN dengan kesamaan yaitu perbedaan -2% dari hasil eksperimen. Perbedaan yang dialami dikarenakan oleh dua faktor, yaitu faktor eksperimen dan faktor simulasi.
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In the maritime industry, durability and structural performance are important for ships. ASTM A36 steel was selected due to availability and cost. A more in-depth analysis of the strength and stiffness of curved plates reinforced with ASTM A36 steel is required for complex bending loads. Compressive strength is also critical for hull stiffening structures. Buckling and plasticity studies of plates with structural complexity are necessary. Previous research has discussed the use of reinforced curved plates in ship hulls. Through a numerical approach, this research aimed to understand the structural mechanics and maximum loads that can be withstood when using reinforced curved plates. This study used plate dimensions of 800x400x6 mm and a curved radius of 2000 mm and flat bar type stiffeners with dimensions of 800x71x6 mm. The results of the 5 simulation schemes mean an average length reduction of 0.065 mm with a difference of -94% compared to experiment and deformation in the z-axis direction of 1,939 with a difference of 100% to experiment. The maximum stress from the simulation results has an average of 129,886 MPa and a maximum load of 367,057 kN with a similarity of -2% difference from the experimental results. The differences experienced are caused by two factors, namely experimental factors and simulation factors.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Buckling, Numerical, Stiffened Curved Plate, Numerik, Pelat Lengkung Berpenegar, Tekuk.
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM156 Naval architecture
Divisions:	Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis
Depositing User:	Nicodema Jermaine Lumempouw
Date Deposited:	12 Aug 2024 07:23
Last Modified:	12 Aug 2024 07:23
URI:	http://repository.its.ac.id/id/eprint/113212

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