A Sea Ice Calculation Method for Simulating Ship-ice Interaction Process in Navigation Simulator

A calculation method and simulator technology, applied in the field of ice navigation visual simulation, can solve the lack of sea ice calculation process, can not meet the latest requirements of IMO for the completeness of simulator functions, and the ice navigation visual system cannot guarantee the scene. Simulation authenticity and other issues

CN107065597BActive Publication Date: 2019-10-01DALIAN MARITIME UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-10-01

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Abstract

The invention discloses a sea ice calculating method of using a marine navigation simulator to simulate a ship-ice interaction process. The sea ice calculation is divided into an ice breaking calculation module and a rigid body motion module according to current sea condition information, and sea ice force, sea ice brash ice shapes, and sea ice motion states during an ice breaking process are calculated and analyzed, and then generated results are transmitted to a ship motion model and an ice area visual system. The sea ice calculating method is used to fill in the blank of the sea ice calculating method of the marine navigation simulator, and a semi-infinite plane elastic foundation theory, a tapered beam structure, and an energy conservation theory are used in the corresponding modules, and then brash ice forming conditions, brash ice bending stress, and brash ice energy distribution and motion states are calculated. Sea ice physical characteristics are well displayed in the ice area simulation visual system of the marine navigation simulator, and the sea ice calculating method is used as a physical foundation of ship-ice interaction process visualization, the ice breaking process is dynamically and vividly simulated, and then reliable sea ice stress feedback is provided for a ship motion model.
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Description

technical field

[0001] The invention relates to the technical field of navigation visual simulation technology in ice areas, in particular to a sea ice calculation method for a navigation simulator to simulate a ship-ice interaction process. Background technique

[0002] The research on the ice field vision in the navigation simulator plays an indispensable role in improving the versatility of the navigation simulator, as well as in personnel training, maritime assessment and scientific research in related maritime fields. For the numerical calculation of sea ice, domestic and foreign related research mainly focuses on the analysis and application of engineering sea ice numerical models, such as: sea ice formation and migration characteristics and physical and mechanical properties, the theory and test methods of the interaction between ice and structures, Anti-ice structures and sea ice design operating conditions, etc. In research at home and abroad, the field of ice navi...

Examples

Embodiment Construction

[0100] The present invention is described in further detail below in conjunction with accompanying drawing:

[0101] like figure 1 As shown, according to the physical state of sea ice, the present invention specifically divides the sea ice calculation method into an ice-breaking calculation module and a rigid body motion module, and then calculates and analyzes the sea ice force, sea ice crushed ice shape and motion state in the ice-breaking process, and generates The results are passed into the ship motion model and the ice vision system.

[0102] like figure 2 As shown, as the breaking condition of sea ice, the bending stress σ in the y direction of the collision point of the free edge of sea ice yy The size of is very important in the ice-breaking calculation module, and its results directly affect the analysis and simulation of the ship-ice interaction process. In a specific calculation example, the main physical properties of leveled sea ice are shown in Table 1.

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