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All Journal TEKNIK KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan IPTEK The Journal for Technology and Science Sinergi Warta Penelitian Perhubungan International Journal of Marine Engineering Innovation and Research JMES The International Journal of Mechanical Engineering and Sciences Warta Penelitian Perhubungan
Dedi Budi Purwanto
Teknik Perkapalan Fakultas Teknologi Kelautan Institut Teknologi Sepuluh Nopember
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Evaluasi Karakteristik Deep-v Planing Hull Dengan Menggunakan Metode Moving Grid Mesh Samuel, Samuel; Iqbal, Muhammad; Trimulyono, Andi; Purwanto, Dedi Budi; Ariani, Betty
Warta Penelitian Perhubungan Vol. 34 No. 1 (2022): Warta Penelitian Perhubungan
Publisher : Sekretariat Badan Penelitian dan Pengembangan Perhubungan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25104/warlit.v34i1.1591

Abstract

Karakteristik Deep-v planing hull sangat dipengaruhi oleh bentuk dan kecepatan kapal. Bentuk pada haluan kapal akan mempengaruhi performance kapal pada saat kondisi air tenang dan gelombang. Semakin tinggi kecepatan kapal maka akan semakin sulit untuk memprediksi karakteristik kapal tersebut. Pada penelitian ini akan menggunakan pendekatan Computational Fluid dynamic (CFD) dengan menggunakan metode moving grid mesh untuk mengevaluasi karakteristik kapal pada saat kondisi air tenang dan gelombang regular. Perhitungan numerik menggunakan persamaan RANS (Reynolds-Averaged Navier-Stokes) dengan model turbulensi k-ε untuk memprediksi aliran turbulen. Hasil simulasi pada kondisi air tenang hambatan menunjukkan trend yang baik pada kecepatan rendah, sementara pada kecepatan tinggi ada perbedaan yang signifikan. Pada kondisi gelombang regular hasil simulasi numerik masih perlu pendekatan yang lebih baik.
Equivalent Single Layer Approach for Buckling Analysis of Stiffened Panel Under Bi-Axial Compression and Lateral Pressure Teguh Putranto; Ardi Nugroho Yulianto; Dedi Budi Purwanto; Dony Setyawan
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 3 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i3.5118

Abstract

Ship structure composed of stiffened plates is subjected to a variety of loading conditions during service, which can lead to buckling. As a result of panel buckling, the overall strength of the ship hull girder is reduced, which is what determines the ultimate strength of the hull girder. The ultimate strength analysis can be accomplished with finite element (FE) simulation, but detailed modeling can be time-consuming. Due to these reasons, it is more advantageous and costeffective to replace the three-dimensional (3D) stiffened panel model with a two-dimensional (2D) equivalent single layer (ESL) plate. This shift from 3D to 2D is premised on the accuracy of ESL in representing the various buckling modes of stiffened panels, which are determined by panel topology and boundary conditions. Therefore, an equivalent single layer plate (ESL) that represents a stiffened panel is evaluated in different buckling modes. Considering that ESL is asymmetric in nature, any modification of the stiffened panel's geometry has a significant effect on the buckling modes. In this paper, we are concerned with two modes of buckling: (i) local buckling within the stiffeners of the plate and web, and (ii) local lateraltorsional buckling within the stiffeners. According to the results, ESL is capable of accurately predicting the effect of local buckling in combination of biaxial compression and lateral pressure.
Co-Authors Agus Surono Agustiani, Elly Andi Trimulyono Ardi Nugroho Yulianto Aries Sulisetyono Arif Wahjudi Bara Atmaja Betty Ariani Danawati Hari Prajitno Eko Sasmito Hadi Hafizh, Muhammad Nur Abdullah Hermawan, Yuda Apri IKAP Utama Mohammad Khoirul Effendi Muhammad Iqbal Muhammad Iqbal Muhammad Luqman Hakim, Muhammad Luqman Rahmi, Lista Putri Adinda Samuel Samuel Samuel Samuel Setyawan, Dony Sulaiman, Suardi bin Teguh Putranto Totok Yulianto Wardani, Putri Kusuma Warlinda Eka Triastuti Wicaksono, Ardhana Widjaja, Raden Sjarief Zeinurrohman, Rangga