Pengaruh Diskontinuitas Struktur Pressure Hull Kapal Selam Akibat Tekanan Hidrostatik Terhadap Distribusi Tegangan Elastis

Caroko, Danang (2008) Pengaruh Diskontinuitas Struktur Pressure Hull Kapal Selam Akibat Tekanan Hidrostatik Terhadap Distribusi Tegangan Elastis. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Laporan tugas akhir ini membahas pola distribusi tegangan elastis yang terjadi pada struktur pressure hull kapal selam, secara khusus yang diakibatkan oleh adanya diskontinuitas bentuk pada pressure hull. Pressure hull utama akan memiliki konfigurasi bentuk berupa silindris vessel, dan pada modiflkasi bentuk akan digunakan conical transition yang akan menghubungkan silinder vessel dengan dome. Faktor kemiringan (sudut transisi) pada conical transition serta dua jenis dome yang digunakan sebagai penutup akan mempengaruhi distribusi tegangan Von Misses pada pressure hull. Ada dua jenis dome unik yang dikenal secara umum dan akan digunakan dalam penelitian kali ini. Secara umum pressure hull akan memiliki panjang total 27 meter dengan diameter utama 3 meter. Sehingga didapat harga perbandingan L/ D sebesar 9. Obyek akan dibangun dengan menggunakan material HY -80 High Tension Steel dengan ketebalan 17.07 mm dan 18 mm serta akan menerima beban operasi berupa tekanan hidrostatik sebesar 3141.075 kPa atau setara den~an kedalaman 300 meter. Besar sudut transisi yang digunakan adalah; 0°, 2°, 4 , 6°, 8°, 9°, dengan conical transition sepanjang 3 m. Kajian didasarkan pada tingkat perubahan sudut conical transition serta jarak maksimum inner ring stiffener, dengan pemodelan berdasar metode elemen hingga menggunakan ANSYS 11 .0. Sehingga dari hasil analisa dapat diketahui bahwa silinder vessel mendistribusikan tegangan elastis secara merata ke seluruh bagian struktur. Selain itu dari hasil analisa diketahui bahwa penggunaan torispherical dome akan dapat meminimalisir distribusi tegangan elastis yang timbul akibat bekerjanya beban operasi pada struktur pressure hull
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This final project discusses the patterns of the elastic stress distribution that occurred on the submarine's pressure hull, inclusively which have been caused by the discontinuity on it. The main pressure hull will be configured as a cylindrical vessel, and a conical transition shape will be used for modifying structure which will be connecting the main cylindrical vessel with the domes. Both of the inclining factor which is called as transitional angle and two kinds of dome will affect the Von Misses's stress distribution on the pressure hull itself. There were two majors of a peculiar domes structure that will be used; hemispherical and torispherical. Generally the pressure hull will have 27m total length with 3 min diameters. Its length to beam ratio was only 9. The object will use HY-80 High Tension Steel with thickness was only 17.07 mm compared to 18 mm on previous design, a proposed structure had against the hydrostatic pressure was only 3141,075 kPa or equal with 300m depth. Transitional angle that has been used were only 0°, 2°, 4°, 6°, 8°, 9°, while the conical transition was only 3 meters length. The scientific study was undertaken on the changing rate of the transitional angle and also on the maximum span between the inner rings stiffeners, which has been served by usitig ANSYS 11.0 based on the finite element method. Hence from the scientific studies the cylindrical vessel performs the conformity of elastic stress distribution. Furthermore also known that torispherical dome ought to reduce the elastic stress distribution which was performed by hydrostatic pressure enhancement on the pressure hull.

Item Type:	Thesis (Other)
Additional Information:	RSKe 623.84 Car p 2008
Uncontrolled Keywords:	Pressure hull, konfigurasi silinder-dome, tekanan hidrostatik kedalaman operasi, inner stiffener ring, kekuatan struktur, conical transition, Pressure hull, cylindrical dtune configunttion, hydrostatic pressure on the depth of operation, inner stiffener ring span, strength of structure, conical transition.
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM163 Hulls (Naval architecture)
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Totok Setiawan
Date Deposited:	06 Jun 2023 09:02
Last Modified:	06 Jun 2023 09:02
URI:	http://repository.its.ac.id/id/eprint/98050

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