AN ANALYSIS OF IMPACTS ON MODEL PLANING BOATS

Öz

AN ANALYSIS OF IMPACTS ON MODEL PLANING BOATS

Öz

This study aims to analyze the impacts encountered in boats in a towing tank. It was carried out on a planing boat model at Ata Nutku Model Experiment Laboratory in Istanbul Technical University. Through the developing technology more powerful engines and lighter composite structures led the boat speeds increased. Increase in speed will also increase the pressure, hydrodynamic loads, trim and dead rise angle of the boat. Additionally, apparent waves make the acceleration and shock problem on boats become superficial. These effects make the hydrodynamic acceleration problem very complicated. Also the boat which is operating at high speed over rough sea is exposed to severe repeated shocks. The first part of this study consists of the standards and methods for impact problem. The second part covers an experimental case, the results and includes comparison of the results

Anahtar Kelimeler

• Model experiments,Impacts,Vibration Dose Value,IMU Device,Hydrodynamic Accelerations.

Kaynakça

1. Avci, A.G., Barlas B, Merdivenci, M.S. 2016. An Experimental Investigation of Shock and Accelerations on Inflatable Boats, 1st International Congress on Ship and Marine Technology, Istanbul, Turkey.
2. Allen, D.P., Taunton, D.J. and Allen, R. (2008) A study of shock impacts and vibration dose values onboard high speed marine craft The Transactions of the Royal Institution of Naval Architects Part A: International Journal of Maritime Engineering, 150, (A3), pp. 1-10.
3. Bass, C., Peterson, R., Pierce, E., Price, B., 2004 “Shock Mitigation for the Human on High- Speed Craft: Development of an Impact Injury Design Rule”, In Proceedings of the RTO AVT Symposium on Habitability of Combat and Transport Vehicles: Noise, Vibration and Motion, Prague, Czech Republic, 2-7 October, 2004.
4. Blount, D.L., Buescher, P.D., Schleicher, D.M., 2004. Seakeeping: An experimental study of accelerations and motions of a high-speed double chine craft, International Symposium on Marine Design, La Spezia, Italy.
5. Blount, D.L., Schleiner, D.M., 2010. Research plan for the investigation of injury and fatigue criteria for personnel aboard high performance craft, 2nd Chesapeake Power Boat Symposium, Annapolis, Maryland, USA.
6. Bowles, J., Soja, J., 2014. Compertive analysis of common methods for predicting vertical acceleration of hard chine planing monohulls including correlation to hydrodynamic model test data. 4th Chesapeake Power Boat Symposium, Annapolis, Maryland, USA.
7. British Standards Institution BS 6841. Measurement and evaluation of human exposure to whole – body mechanical vibration. London, 1987.
8. Dobbins, T., Dyson, R., Gunston, T., King, S., Myers, S., Withey, R., 2008. High speed craft motion analysis-impact count index. 43rd United Kingdom Conference on Human Responses to Vibration - Leicester, September 2008.

9. Hudson, D.A., Taunton, D.J. and Shenoi, R.A. (2010) Characteristics of a series of high speed hard chine planing hulls - part 1: performance in calm water International Journal of Small Craft Technology, 152, pp. 55-75. (doi:10.3940/rina.ijsct.2010.b2.96).
10. International Code of Safety for High Speed Craft (2000 HSC Code) – IMO, 2008 Edition
11. Kearns, S. (2001), Analysis and Mitigation of Mechanical Shock Effects on High Speed Planing Boats, Master’s thesis, Massachusetts Institute of Technology.
12. Liam, C., Testing and Modelling of Shock Mitigation Seats for High Speed Craft, In FAST:2001, Honolulu, Hawaii.
13. Merdivenci, S.M., Avci, A.G., Barlas, B., 2015. Experimental Investigations of Accelerations and Vibrations on Vehicles and Boats, GİDB Dergi, (3): 23-39.
14. Nazarov, A., 2012. Acceleration: A new problem for high-speed craft, Sea Yachting Magazine, Vol. 7, No. 4, July – August, 40-43.
15. Nazarov A. Suebyiw P., Piamalung A. Experimental assessment of Impact Loads on Catamaran Structures, Design & Operation of Wind Farm Support Vessels, 28-29 January 2015, London, UK - p.75-84.
16. Olausson, K., 2012. Vibration mitigation for high speed craft, Master’s Thesis at Centre for Naval Architecture Royal Institute of Technology, Stockholm, Sweden.
17. International Organisation for Standardisation, 'Mechanical vibration and shock - Evaluation of human exposure to whole-body vibration -Part 1: General requirements.', ISO 2631-1:1997.
18. International Organisation for Standardisation, 'Mechanical vibration and shock —Evaluation of human exposure to whole-body vibration — Part 5: Method for evaluation of vibration containing multiple shocks.', ISO 2631-5:2003.
19. Ullman, J., 2014. Slamming Standards, Proffessional Boat Builder, No:149, June-July, 48-53.