|
| Maneuverability analysis of polar ship based on six-degrees-of-freedom discrete element method |
| Received:February 23, 2022 Revised:April 10, 2022 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslxCMGM202212 |
| KeyWord:polar ship discrete element method(DEM) dilated polyhedron maneuverability ice resistance |
| Author | Institution |
| 刘昕 |
中国人民解放军 92942部队, 北京 |
| 于海龙 |
中国船舶工业集团第708研究所, 上海 |
|
| Hits: 344 |
| Download times: 197 |
| Abstract: |
| The maneuvering and ice breaking performance of polar ships is an important issue to be considered in the design and construction of icebreakers.In order to analyze the maneuverability of polar ships,a six-degree-of-freedom (6-DOF) model for maneuvering ice-breaking motion of ships in ice regions is developed in this paper,in which the dilated polyhedral discrete element method is used to simulate the sea ice field,and the rudder and propeller maneuver is used to provide the maneuvering force.The ice load on the hull structure is simulated by steady straight ice breaking in level ice,and compared with Lindqvist's formula of hull ice resistance.The maneuverability of Xuelong ship under 35° rudder angle in open water is carried out and compared with the results of real ship trial.On this basis,the calculation of ice load and ice breaking trajectory of ship structure under the influence of ice thickness and rudder angle is carried out,and the time histories of heave,roll and pitch motion of the ship hull during ice breaking are determined;Finally,the difference between the line load distribution of maneuvering ice breaking hull and direct navigation ice breaking is analyzed. |
|
|
|