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The effect analysis of the stiffness changes of a Traditional Fishing Boat Foundation on Vibration Amplitude

Analisis Pengaruh Perubahan Kekakuan Pondasi Kapal Ikan Tradisional terhadap Amplitudo Getaran

*Debby Raynold Lekatompessy orcid scopus  -  Program Studi Teknik Perkapalan Fakultas Teknik, Universitas Pattimura, Indonesia
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The ship with the outboard engine is intended to make it easier for fishers to operate and maintain. However, the magnitude of the vibration due to the excitation of the engine during operation adversely affects the surrounding structures. It is evidenced by measuring the vibration amplitude of more than 0.02 mm at several points around the ship engine foundation. This study aims to reduce these vibrations by changing the canal's dimensions as a foundation and using damping rubber as the simplest solution. The analysis was carried out by calculating the vibration parameters of 2 types of machines, SR1110 and S1100. The numerical method is used to calculate the vibration's amplitude by varying the value of channel stiffness and rubber damping on the machine foundation. Supporting data is obtained by measuring the vibration amplitude at several points around the foundation. The magnitude of the previous vibration amplitude is 0.078 mm for the SR1110 type and 0.069 mm for the S1100 type, which exceeds the limit still. The amplitude is reduced by changing the foundation's dimensions and using a rubber damper (c). With the new foundation dimensions, the amplitude for the diesel engine type SR1110 becomes 0.0245 mm and type S1100 becomes 0.0238 mm. Increased stiffness and the addition of rubber succeeded in reducing the vibration amplitude by a significant value. The amplitude was reduced by 69% for the SR1110 engine type and 65% for the S1100 engine type within the allowable limit of less than 0.02 mm to 0.03 mm based on Barkan's observation results.

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Keywords: stiffness; outboard engine; numerical method; damping; vibration.

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  1. Gatete, E., Ndiritu, H.M., Kiplimo, R. (2018). A Review on Marine Propeller Performance of High Speed Boat Running on an Outboard Engine. Proceedings of Sustainable Research and Innovation Conference. International Annual Conference on Sustainable Research and Innovation
  2. Haro, B.G., SilvaNeto, S.F., Vaz, L.A., Troyman, A.C.R., Monteiro, U.A., Gutiérrez, R.H.R. (2018). Use of added mass and shear flow in thin-walled sections of ships for modal analysis using finite element method. Mar Syst Ocean Technol.13, 43–54.
  3. Inman, D.J. (2013) Engineering Vibration. Ed. 4. New Jersey: Pearson
  4. Lekatompessy, D.R., Sulaiman, O.O., Manuhutu, F., De Lima, E.J., Manuputty, M. (2013). Rubber as an Effective Vibration Absorber of Outboard Engine at Small Traditional Fishing Boats from the Human Health and Safety Point of View. Journal of Engineering Computers & Applied Sciences. 2, 7–12
  5. Lin, T.R., Pan, J., O’Shea, P.J., Mechefske, C.K. (2009). A study of vibration and vibration control of ship structures. Marine Structures, 22, 730–743.
  6. Mumm, H. (2017). Ship Vibration, Global, and Local Modes. Encyclopedia of Maritime and Offshore Engineering. USA: American Cancer Society, 1–12.
  7. Randall, S.E., Halsted, D.M., Taylor, D.L (1981). Optimum Vibration Absorbers for Linear Damped Systems. Journal of Mechanical Design 103, 908–913.
  8. Rosyida, I.N., Pramonowibowo, Sardiyatmo (2015). Analisis perbedaan kecepatan perahu dengan penambahan mesin inboard dan mesin outboard pada perahu sopek di Perairan Tambak Lorok Semarang. Journal of Fisheries Resources Utilization Management and Technology. 4, 18–28
  9. Sa’id, S.D., Ridwan, M. (2019). Pemilihan Mesin Induk Kapal Purseiner Masyarakat Pesisir Nelayan Pekalongan. Jurnal Pengabdian Vokasi, 1, 99–102
  10. Srinivasalu, P., Vaidyanathan, C. (1976) Handbook of Machine Foundations, Ed.1. New Delhi: Tata McGraw Hill Education
  11. Todd, F.H. (1961). Ship Hull Vibration. Edward Arnold Ltd., London
  12. Ward, F., Norris, C., Catley, D., Crexis, A (1982). Local vibrations in ship’s structures. Transactions of North East Coast Institution of Engineers and Shipbuilders 98, 49 – 64
  13. Wiyastra, A.P., Baskoro, M.S., Purwangka, F. (2012). Instalasi Permesinan pada Kapal PSP 01. Jurnal Teknologi Perikanan dan Kelautan. 3, 35–43.
  14. Xia, L., Wu, W., Weng, C., Jin, X. (2000). Analysis of fluid-structure-coupled vertical vibration for high-speed ships. Journal of Ship Mechanics. 4, 43–50
  15. Yucel, A., Arpaci, A. (2013). Free and forced vibration analyses of ship structures using the finite element method. J Mar Sci Technol. 18, 324–338.

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Last update: 2023-12-01 07:50:44

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