Open AccessThe analysis of occurring process to the deformation and the bending plats from the right hand of the hull plates of LCT Malela Raja III ship for economical management
Author(s) -
SM Tuny
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/801/1/012058
Subject(s) - tonnage , hull , marine engineering , engineering , vibration , engine power , mechanical engineering , structural engineering , power (physics) , geology , acoustics , oceanography , physics , quantum mechanics
The introduction of the research, this is a ship carrying liquid cargoes for the trayek Namlea and arround Buru Island. Gross tonnage (GT) are 86 tonnes and the weight displacement area 173,522 tonnes. The Engine of Mitsubishi merk, type 6D15 with Engine Power 2x90 HP and the Engine Rotation are 2x1500 RPM (4 stroke of the engine), with reduction ratio 1;4. The trayek around Buru Island (In Moluccas) in the rain condition the climate condition is necessary to change ie in the rain season, the sea condition causes waves and pressures the hull plate with wave flow. In addition with the spreading vibration from the Main Engine of this ship wil occur the curvature and the deformation. The purpose of this research; 1. To know how many thick of the strength right hull plates. 2.To know the influence of the vibration spread of the main engine and the ship Hull plate that to analyses the frequencies of the main engine vibratory and the ship Hull vibration. The result that we can find in this research with natural frequency analysis is N 2nv = 453,48 cpm , while N 3nv = 919,62 cpm dan N 4nv = 1390,66 cpm, the ship operate 75% from 2 engine is 2250 cpm, while the ship operates with a machine speed of 75% for 2 pieces of machinery = 2250 cpm and 60% = 1284.84.