Analytical and numerical vibration analyses of marine genset foundations with pipe profiles

Yıl 2020, Cilt: 22 Sayı: 2, 600 - 616, 10.04.2020

Adil Yücel Alaeddin Arpacı Enes Akpolat Merve Erol Utkucan Özdemir

https://doi.org/10.25092/baunfbed.742631

Cited By: 1

Öz

Since ships are very large and complex structures, they contain many members acting as vibration sources one of which is a marine genset. In this study, 11 different table-type marine genset foundation designs which are constructed using pipe profiles with various angles and which are acting as vibration reducers, have been investigated. These structures have been analyzed using both analytical and finite element methods. The study is generally based on solid modelling, modal and total deformation analyses of genset foundations using finite element method. As a result of these analyses, the design of the genset foundation which is acting as vibration reducer optimally, has been determined.

Anahtar Kelimeler

Ship vibrations, modal Analysis, genset foundations

Boru profilli gemi jeneratör kaidelerinin titreşim açısından analitik ve sayısal analizi

Öz

Gemiler, çok büyük ve karmaşık yapılar olduklarından bünyelerinde titreşim kaynağı sayılabilecek bir çok eleman bulundurmaktadırlar. Bu çalışmada, gemi üzerinde yerel titreşimlere neden olan gemi jeneratör setleri için titreşim sönümleyici görevi gören ve farklı açılarda tasarlanmış boru profillerden oluşan tabla tipi 11 farklı kaide tasarımı üzerinde durulmuştur. Bu yapılar hem analitik hem de sonlu eleman yöntemiyle incelenmiştir. Çalışma, genel olarak, gemi jeneratör seti ve kaidelerinin katı modelleme yazılımıyla üç boyutlu katı modellerinin oluşturulması ve sonlu eleman metodu ile modal ve toplam deformasyon analizlerine dayanmaktadır. Bu incelemeler sonucunda hangi tasarımın titreşim sönümleme açısından en iyi sonucu verdiği belirlenmiştir.

Anahtar Kelimeler

Gemi titreşimleri, modal analiz, jeneratör kaideleri

Kaynakça

• Guidance Notes on Ship Vibration, American Bureau of Shipping, (2006).
• International Standard ISO 6954, Mechanical vibration and shock, Guidelines for the Overall Evaluation of Vibration in Merchant Ships, (1984).
• Chavan, V. S., Askhedkar, R. ve Sanap, S. B., Analysis of anti vibration mounts for vibration isolation in diesel engine generator set, International Journal of Engineering Research and Applications, 3, 3, 423-1428, (2013).
• Fucai, H., Jianguo, Y. ve Qingming, Z., Analysis and experimental research on two layers vibration isolation of diesel generating set in superiority oil tanker, Proceedings, The Eighth International Conference on Electronic Measurement and Instruments, China, (2007).
• Prakash, S. ve Puri, V. Y., Foundations for dynamic machines, Journal of Structural Engineering, Special Issue, Madras, India, (2006).
• Gerb Vibration Control Systems, Mass Dampers, http://www.gerb.com/, (20.04.2016)
• Clunis, G. E. ve Bradley S. J., Development of diesel generator isolation systems for low noise and vibration, Journal of the Canadian Acoustical Association, 19, 4, (1991).
• You, D., Sun, L., Ai, S. ve Liu, Y., Research on the vibration characteristics of a ship engine-base system, Advanced Materials Research, 644, 239-242, (2013).
• Daifuku, M., Nizhizu, T., Takezawa, A., Kitamura, M., Terashita, H. ve Ohtsuki, Y., Design methodology using topology optimization for anti-vibration reinforcement of generators in a ship's engine room, Journal of Engineering for the Maritime Environment, doi: 10.1177/1475090214543081, (2014).
• Mogal, S. P., Behera, R. K. ve Pawar, S. Y., Design and development of muffler for diesel generator set for reduction of noise, International Journal of Engineering Science and Technology (IJEST), 3, 4, 3591-3595, (2011).
• Bognatz, S. R., Alignment of critical and non critical machines., Orbit, 4, 23-25, (1995).
• Sadok, S., Characterization and experimental validation of the dynamic behavior of an industrial turbo-alternator supporting structure, International Journal on Numerical and Analytical Methods in Engineering (IRENA), 2, 2, (2014).
• Listewnik, K., Influence of Vibration of Ship’s Generating Set on Emitted Acoustic Energy, (2019).
• Gawande, S. H., Navale, L. G., Nandgaonkar, M. R. ve Butala, D., Torsional frequency analysis of multi-cylinder inline diesel engine generator system, Proceedings, The International Conference on Mechanical, Industrial, and Manufacturing Technologies (MIMT ’10), 519–524, ASME, January, (2010).
• Anton, G. P., Paval, M. ve Sorel, F., Application on an updated finite element model of an engine in the automotive industry, Proceedings, SISOM 2011, 68-74, Bucharest, May, (2011).
• Livshits, A., Dynamic analysis and structural design of turbine generator foundations, Proceedings, European Built Environment CAE Conference, (2008).
• Adhikari, S., Handbook of turbo-generator foundation, Lap Lambert, (2018).
• Murali, K. ve Madan, R., M-CAD centre, MSRSAS, 20-23, http://www.msrsas.org/docs/sastech_journals/archives/Sept2003/5.pdf, (2003).
• Lee, D. C., Brennan, M. J. ve Mace, B. R., Dynamic behaviour and transmission characteristics of structure-borne noise of marine diesel engine generator with resilient rubber mounts and elastic foundation, Academic Report, University of Southampton Institute of Sound and Vibration Research, England, (2004).
• Aher, P. B. ve Malave, S. K., Vibration assessment of diesel engine genset mounts, Proceedings, International Conference on Ideas, Impact and Innovation in Mechanical Engineering, 5, 6, 1700-1706, (2017).
• Adeoye, O. S., Adebayo, A. A., Olofinjana, A. ve Tafa, A. K., An overview of methods of reduction of vibration for diesel generators, Journal of Electrical and Electronical Systems, 8, 1, 296, (2019).
• Dimbale, N., Bhujbal, A., Hanabar, R. ve Gawande, S., Noise and vibration analysis of 6 cylinder diesel engine of SL 90 type, Proceedings, IJSAT, 1, 2, (2011).
• Yücel, A., Gemilerde ortaya çıkan yerel titreşim problemlerinin teorik ve deneysel analizi, Doktora Tezi, İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, İstanbul, (2009).
• Wärtsilä Ship Power Engines, WÄRTSILÄ 26 Project Guide, http://www.wartsila.com/docs/default-source/product-files/engines/ms-engine/wartsila-o-e-w-26-pg.pdf, (23.01.2016).
• University of Rijeka Faculty of Maritime Studies, Auxiliary Marine Machinery, http://www.pfri.uniri.hr/~bopri/documents/23_AuxiliaryMarineMachinery_000.pdf, (21.06.2016).
• Lee, J. P. ve Golod, Y. S., Foundations for dynamic equipment, American Concrete Institude, (2011).
• Sağlam, H., Gemi dizel motorunun çalışması esnasında ayak basma yerlerinde oluşan kuvvetlerin analizi, Yüksek Lisans Tezi, İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, İstanbul, (2013).
• MAN Diesel & Turbo, Marine GenSets, https://marine.man.eu/docs/librariesprovider6/marine-broschures/1510-0036-06ppr_marinegensets_low.pdf?sfvrsn=2, (05.02.2016).
• Kutay, M. G., Mukavemet değerleri kitabı, TMMOB Makina Mühendisleri Odası Yayınları, (2004).
• ESTEQ, Modal analysis: What it is and is not., https://esteq.co.za/2014/11/25/modal/comment-page-1/#comments. (17.07.2017).