A Calculation Method of Ship's Unsinkable Marking Plan Based on IDF Data Model

Abstract

A method for calculating a ship's unsinkable marking diagram based on an IDF data model, comprising the following steps: establishing an IDF data model of a main hull surface, and modeling the fore and aft contour lines and transverse sections of the main hull molding line in a point set format , and carry out three-dimensional expression, and save in idf format; define the appendages and cabins of the ship; on the basis of importing the main hull model, carry out the complete cabin division of the whole ship, the definition of multiple cabins, and the synthesis and decomposition of cabins, etc. ; Define the permeability coefficient of the damaged compartment while establishing the compartment; and define the loading conditions required for calculation, that is, define the displacement and weight center of gravity data required for calculation; use the weight increase method to calculate the state of the first type of compartment after it is filled with water; The lost buoyancy method is used to calculate the damaged state of the third type of cabin; the man-hour is reduced, and the free trim and heel state of the ship are considered, and the change results of the floating state, cabin capacity and stability are obtained; the calculation results can be obtained It is closer to the actual state of the ship after the cabin is flooded.

Description

technical field [0001] This intellectual achievement belongs to the field of overall performance of ships, and specifically relates to an optimal calculation method for the calculation of compartment elements of unsinkable standard board diagrams. Background technique [0002] The "Unsinkability Marking Chart" is a reference map for the user department to make anti-sinking adjustment after the ship is damaged and flooded. It is an important basis for the ship's anti-sinking adjustment and an important part of the ship's vitality guarantee. The main data result is when the ship is damaged, the water inflow volume V(m 3 ), the trim value △t (m), the heel angle (°) caused by water ingress, and the change value △h (cm) with high initial lateral stability, etc. Therefore, its main technical principle is the calculation theory of unsinkability, and unsinkability is still widely regarded as a part of the hydrostatic theory of ships. The calculation method of the traditional "Unsin...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a new method and means for calculating the unsinkability standard plate in view of the above-mentioned deficiencies in the prior art, through which the traditional manual method can overcome the large amount of manually defined data and the amount of process data Large size, many calculation assumptions, and no consideration of the free trim of the ship have formed a relatively complete and feasible calculation method and process for the unsinkable mark plate, which can simulate the theoretical state of the actual flooding of the ship, and at the same time use a relatively The high efficiency obtains the required water volume V(m 3 ), the resulting trim value △t(m), heel angle And the data results such as the change value △h (cm) with high initial lateral stability provide support for the anti-sinking adjustment of the ship

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