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Calculation method of capsizing probability of damaged ship based on piece-wise

A probabilistic calculation and ship technology, applied in computing, complex mathematical operations, special data processing applications, etc., can solve problems such as time-consuming, achieve rapid analytical solutions, achieve ship safety, and quickly evaluate ship safety.

Pending Publication Date: 2019-03-01
LUDONG UNIVERSITY
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Problems solved by technology

This method is characterized by accurate calculation results, but takes a long time

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  • Calculation method of capsizing probability of damaged ship based on piece-wise
  • Calculation method of capsizing probability of damaged ship based on piece-wise
  • Calculation method of capsizing probability of damaged ship based on piece-wise

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with accompanying drawing:

[0032] Such as image 3 As shown, the calculation method for the capsizing probability of a damaged ship based on the piece-wise includes the following steps:

[0033] S1. Time-domain calculation of the flooding process of the damaged ship:

[0034] The solution method is determined according to the different damage types of the ship. There is no interaction between the inflow water and the outboard water in the first type of tank and the second type of tank. The interaction between the water in the tank and the hull, considering its engineering practicability, ignoring the influence of liquid sloshing, assuming that the liquid in the tank is "quasi-static", only considering the influence of the free liquid surface on the restoring moment; the third type of tank water and There is interaction with the outboard water, and the loss buoyancy method is used to solve the insta...

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Abstract

The invention discloses a calculation method of capsizing probability of damaged ship based on piece-wise. The method comprises the following steps: S1, calculating the time domain of the water inflowprocess of the damaged ship; S2, based on piece-wise method, evaluating the probability of capsizing a damaged ship in crosswind and crosswave. The invention has the beneficial effect of realizing fast analytical solution of rolling motion equation, thereby realizing the requirement of fast evaluation of ship safety. This method can help the decision-maker to make a quick decision and respond tothe emergency at the critical moment of the damaged water inflow.

Description

technical field [0001] The invention relates to a calculation method for the overturning probability of a damaged ship based on piece-wise. Background technique [0002] In response to the phenomenon that capsized accidents still occur in waves for some ships meeting the still water codes, the International Maritime Organization (IMO) has been working on formulating and revising stability codes applicable to all types of ships. In 1997, the "Guidelines for the Application of Comprehensive Safety Assessment Method in the Process of IMO Code Formulation" was approved, and it was proposed that the FSA should be gradually applied in the formulation of safety codes and ship design, so as to build a gradually improved comprehensive safety assessment system. Currently, IMO is revising and perfecting the second-generation intact stability criteria, and plans to implement them in 2019. Therefore, it is of great significance to integrate the ideas and methods of comprehensive safety ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/11G06F17/50
CPCG06F17/11G06F30/15
Inventor 胡丽芬鲁江李刚齐慧博张克正
Owner LUDONG UNIVERSITY
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