Kajian Kekuatan Struktur Pondasi Mesin Induk Harbour Tug Boat
Abstract
The main engine has its own weight, and vibration also occurs so the heavier the load that the foundation holds. The foundation has an essential role as a retainer or support for the load, so it must be stronger to withstand the dynamic vibrations of the main engine. The installation of the foundation is made in such a way that the alignment of the engine shaft axis with the propeller shaft is guaranteed. The problem to be solved is how much load is received, whether the stress results still meet the class requirements, and the estimated age of the foundation. Using the calculation of applied mechanics, the load that will be received on the foundation and the main engine foundation construction planning can be known. To find out the results of the construction planning using the Finite Element Method. The analyzed structure is divided into smaller and simpler elements in a finite number by giving the value of the simulated structure boundary conditions. The analysis results show that the maximum stress value obtained is 267.1 MPa, while the allowable stress value is 300 N/mm2. So that the foundation can be declared to have met the requirements and is safe. For fatigue life analysis, the foundation age is 34,422 years, where the age has met the requirements
References
Ningrum, Mustika. 2018. Analisis Fatigue Life Konstruksi Kapal 17500 LTDW Crude Oil Tanker. Tugas Akhir. Politeknik Perkapalan Negeri Surabaya, Surabaya.
Nugroho, B.A., Mulyanto, I.P., dan Kiryanto.2011. Analisa Kekuatan Struktur Pondasi Mesin Dengan Thrust Block Pada Kapal ROPAX 5000 GT Dengan Metode Elemen Hingga. Jurnal Teknik Perkapalan. Vol 3 No. 2. p290-p299. Universitas Diponegoro, Semarang.
Putra, Dedy Anggara. 2018. Studi Perencanaan Pondasi Dinamis Mesin Generator Turbin Pada Pembangkit Listrik Tenaga Mikrohidro [Tesis], Malang (ID) Universitas Muhammadiyah Malang.
Rao, Kameswara (ed.). 1998. Vibration Analysis and Foundation Dynamics. New Delhi.
Rokhim, Imam Nur. 2014. Analisis Kekuatan Pondasi Pedestal Crane Pada Modifikasi Kapal Accomodation Barge Dengan Autodesk Inventor 2013. Tugas Akhir. Politeknik Perkapalan Negeri Surabaya, Surabaya.
Septama, Havinda Nur. 2017. Analisis Pondasi Windlass Menggunakan Metode Elemen Hingga. Tugas Akhir. Politeknik Perkapalan Negeri Surabaya, Surabaya.
Trimulya, M.R., Mulyanto, I.P, dan Andi Tri Mulyono. 2015. Jurnal Teknik Perkapalan. Vol 03 No. 02. Universitas Diponegoro, Semarang.
