Analisis Tekuk Struktur Alas Kapal Akibat Beban Hogging

Rindiano, Yasmin (2024) Analisis Tekuk Struktur Alas Kapal Akibat Beban Hogging. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Menurut European Marine Casualty Information Platform (EMCIP), Kecelakaan kapal yang mengangkut muatan atau kargo memiliki total insiden yang lebih besar dari pada jenis kapal lainnya pada periode 2014-2021. Oleh karena itu, kapal harus dirancang sedemikian rupa agar dapat beroperasi dengan aman agar tidak terjadi kecelakaan. Dalam perancangan kapal oil tanker, perancangan struktur merupakan aspek penting terutama struktur alas kapal dikarenakan struktur kapal oil tanker menerima beban besar dan berulang dari muatan dan kondisi laut. Jika muatan diletakkan sebagian besar di bagian depan belakang kapal dan mengalami tekanan akibat gelombang pada bagian tengah, maka alas kapal akan mengalami kondisi hogging. Kondisi ini menyebabkan struktur alas mengalami kompresi dan dapat terjadi tekuk jika struktur mencapai beban maksimal. Oleh karena itu, analisis struktur pelat alas kapal sangat penting untuk menghindari kegagalan struktur yang dapat mengakibatkan kecelakaan. Metode elemen hingga digunakan dalam analisis ini. Tegangan tekan yang dialami oleh struktur alas kapal pada kondisi hogging adalah 39,64 Mpa. Dimensi penegar dengan beban maksimum tertinggi adalah L 130 x 75 x 12 mm sebesar 13.680,32 kN dengan tebal pelat 12 mm tidak mengalami tekuk. Dimensi penegar dengan beban maksimum terendah adalah L 170 x 60 x 8 mm sebesar 4.580,80 kN dengan tebal pelat 8 mm tidak mengalami tekuk. Respon tekuk semua variasi menggambarkan bahwa semakin tebal penegar, maka semakin besar nilai beban maksimum yang dapat ditahan. Semakin tebal pelat, semakin besar beban maksimum yang dapat ditahan oleh struktur.
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According to the European Marine Casualty Information Platform (EMCIP), ship accidents carrying cargo have a greater total number of incidents than other types of ships in the 2014-2021 period. Therefore, ships must be designed in such a way that they can operate safely to avoid accidents. In designing oil tanker ships, structural design is an important aspect, especially the base structure of the ship because the structure of the oil tanker ship receives large and repeated loads from cargo and sea conditions. If the cargo is placed mostly at the front and rear of the ship and experiences pressure due to waves in the middle, then the ship's base will experience a hogging condition. This condition causes the base structure to experience compression and buckling can occur if the structure reaches its maximum load. Therefore, structural analysis of the ship's bottom plate is very important to avoid structural failures that could result in accidents. The finite element method is used in this analysis. The compressive stress experienced by the ship's bottom structure in hogging conditions is 39.64 Mpa. The stiffener dimensions with the highest maximum load are L 130 x 75 x 12 mm of 13,680.32 kN with a plate thickness of 12 mm without buckling. The dimensions of the stiffener with the lowest maximum load are L 170 x 60 x 8 mm of 4,580.80 kN with a plate thickness of 8 mm without buckling. The buckling response of all variations illustrates that the thicker the stiffener, the greater the maximum load value that can be supported. The thicker the plate, the greater the maximum load the structure can withstand.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	kapal oil tanker, hogging, tekuk, beban maksimum oil tankers, hogging, buckling, ultimate load
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM156 Naval architecture V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM163 Hulls (Naval architecture)
Divisions:	Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis
Depositing User:	Yasmin Rindiano
Date Deposited:	02 Aug 2024 08:57
Last Modified:	02 Aug 2024 08:57
URI:	http://repository.its.ac.id/id/eprint/112236

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