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M.A, Wahid
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Aerospace Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Application of Euler Method on Ice Sheet Buckling Koto, J; Afrizal, Efi; M.A, Wahid
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 55 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (711.891 KB) | DOI: 10.36842/jomase.v55i1.96

Abstract

Bulbous bow ship economically has advantage during sailing in open water due to lower resistance compared with an ice bow. On the other hand, the movement of the ship gradually give load to the ice sheet, along with that, the ice sheet will react in proportion to the load of the ship. Therefore the bulbous bow ship has higher ice resistance. This paper discusses the phenomena of ice sheet buckling due bulbous bow of ice ship. The ice sheet buckling was analyzed using Finite Element Method based on Euler method. The Euler method was described from general deflection equation for a beam.
Effect of Bulbous Bow on Ice Resistance of Ice Ship Afrizal, Efi; Koto, J; M.A, Wahid
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 60 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (915.223 KB) | DOI: 10.36842/jomase.v60i1.74

Abstract

Ice resistance is very important in design of an ice ship due to related to the propulsion system. Bulbous bow ship economically has advantage during sailing in open water due to lower resistance compared with an ice bow. On the other hand, the bulbous bow ship has higher ice resistance due to bulbous bow. This paper discusses effect of bulbous bow on ice resistance of ice ship using Finite Element Method. In the simulation, the interaction of bulbous bow-ice was detected using the Couple Eulerian Langrangian. Simulation was run at ship speeds of 0.4 m/sand 0.5 m/s at 0.5 m of ice thickness. It was founded that during ice crushing, the pressure changes that occur in the hull are directly combined with changes in the internal energy of the ice. The ice resistance increases due to buckling and bending created by bulbous bow.
Buckling and Deflection of Ice Sheet Caused by Ship Koto, J; Afrizal, Efi; M.A, Wahid
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 62 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (922.096 KB) | DOI: 10.36842/jomase.v62i1.104

Abstract

The movement of ice ship gradually gives load to the ice sheet, along with that, the ice sheet will react in proportion to the load of the ship. The phenomenon of interaction between ice and hull of ship has been studied by researchers through empirical mathematical simulation and experiment. This paper discusses the phenomena of ice sheet buckling and deflection caused by a ship sailing in ice level. The ice sheet buckling and deflection is analyzed based on using Finite Element Method based on Euler and Cantilever methods. The methods were described from general deflection equation for a beam. Simulation was carried out using Abaqus running ahead and astern at several speeds of 0.4m/s, 0.5m/s and 0.6m/s.
Co-Authors Afrizal, Efi Koto, J