Numerical study on the structural response of energy-saving device of ice-class vessel due to impact of ice block
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The present paper considers the contact between energy-saving device of ice-class vessel and ice block. The main objective of this study is to clarify the tendency of the ice impact force and the structural response as well as interaction effects of them. The contact analysis is performed by using LS-DYNA finite element code. The main collision scenario is based on Finnish-Swedish ice class rules and a stern duct model is used as an energy-saving device. For the contact force, two modelling approaches are adopted. One is dynamic indentation model of ice block based on the pressure-area curve. The other is numerical material modelling by LS-DYNA. The authors investigated the sensitivity of the structural response against the ice contact pressure, the interaction effect between structure and ice block, and the influence of eccentric collision. The results of these simulations are presented and discussed with respect to structural safety.
Abstract
The present paper considers the contact between energy-saving device of ice-class vessel and ice block. The main objective of this study is to clarify the tendency of the ice impact force and the structural response as well as interaction effects of them. The contact analysis is performed by using LS-DYNA finite element code. The main collision scenario is based on Finnish-Swedish ice class rules and a stern duct model is used as an energy-saving device. For the contact force, two modelling approaches are adopted. One is dynamic indentation model of ice block based on the pressure-area curve. The other is numerical material modelling by LS-DYNA. The authors investigated the sensitivity of the structural response against the ice contact pressure, the interaction effect between structure and ice block, and the influence of eccentric collision. The results of these simulations are presented and discussed with respect to structural safety.
참고문헌 (18)
- Daley, Claude, "Energy based ice collision forces, expanded version (full deri-vations) of paper for POAC 99", Proc. Of the 15th International Conference on Port and Ocean Engineering under Arctic Conditions (1999), Helsinki University of Technology in Espoo
- de Souza Neto, E.A., "Computational Method for Plasticity : Theory and Applications" (2008)
- Derradji-Aouat, A., "A unified failure envelope for isotropic fresh water ice and iceberg ice", Offshore Mechanics and Arctic Engineering : Presented at ETCE, 2000, pp.2, 1241~1248
- Frederking, R., "The nature of the process pressure-area relation from CCGS Terry Fox bergy bit impacts", 19th (2009) International Offshore and Polar Engineering Conference, pp.608~613 (2009), International Society of Offshore and Polar Engineers
- Gagnon, R.E., "A numerical model of ice crushing using a foam analogue", Cold Reg. Sci. Technol., 65, pp.335~350 (2011)[DOI]
- Gao, Yan, "An elastic-plastic ice material model for ship-iceberg collision simulations", Ocean Eng., 102, pp.27~39 (2015)[DOI]
- IACS, "Common Structural Rules for Bulk Carriers", ~ (2006)
- IACS, "Requirements Concerning Polar Class, Unified Requirements", ~ (2007)
- "ISO", CD 19906, Petroleum and Natural Gas Industries-arctic Offshore Struc- tures, ISO TC 67, WG 8, pp.Final Draft International Standard. International Standardization Organization, 1990[DOI]
- Karasuno, K., "A quick chart for added masses of floating structures with block types", J. Kansai Soc. N.A., Japan, 229, pp.79~85 (1998)
- Reports of National Maritime Research Institute, 2014. Study of Weather Adapted Duct, vols. 14-2, "Kawashima, H.", 19~34 (2014)
- Kinnunen, Aki, "Azimuthing thrusters ice impact load calculation", Azimuthing Thrusters Ice Class Rule Development Steering Group Meeting (2013)
- Kinnunen, Aki, "Ice-structure impact contact load calculation with dynamic model and simplified load formula", Port and Ocean Engineering under Arctic Conditions (2015)
- Liu, Z., "Plasticity based material modelling of ice and its application to ship-iceberg impacts", Cold Reg. Sci. Technol., 65, pp.326~334 (2011)[DOI]
- Osawa, N., "Study on shell-solid coupling FE analysis for fatigue assessment of ship structure", Mar. Struct., 20, pp.143~163 (2007)[DOI]
- Palmer, A.C., "A revised ice pressure-area curve and a fracture mechanics explanation", Cold Reg. Sci. Technol., 56, pp.73~76 (2009)[DOI]
- Sanderson, J.O., "Ice Mechanics, Risks to Offshore Structures" (1988)
- TRAFI, "Ice Class Regulations 2010 "Finnish-Swedish Ice Class Rules 2010". TRAFI", 31298, 2010, 2010[DOI]