Multi-section bottom-supported ship-shaped structure overall loading calculation method

Abstract

The invention discloses a multi-segment bottom-supported ship-shaped structure overall load calculation method. The method comprises the following steps of S1, establishing a ship body weight discretefunction WD (x), a ship body buoyancy discrete function FD (x) and a ground counterforce function f0 (x); S2, solving the WD (x), the FD (x) and a vertical static load static balance equation and a moment static balance equation established between the WD (x) and the FD (x) to obtain an unknown quantity in a hull weight discrete function f0 (x); S3, introducing an iteration factor fj (j = 1... M)to obtain a ground load related factor ai, 1, bi, 1; S4, performing sequential iterative solution on the fj iteration, controlling the balance error of the vertical static load and the integral moment within a preset value, and stopping the iteration of the fj; and S5, inputting the ground load fij (Li (x)) into a general overall loading software program in a corresponding ground range to obtaina ground counter-force value fNAPAi (Li (x)). According to the technical scheme of the invention, a multi-piecewise function theory is successfully applied to a multi-piecewise bottom-supported ship-shaped structure static load balance system model for the first time.

Description

technical field [0001] The invention relates to the field of ship engineering, in particular to a method for calculating the overall stowage of multi-section bottom-sitting ship-shaped structures. Background technique [0002] With the continuous emergence of multi-section bottom-bottomed ship structures, the traditional general-purpose commercial software overall stowage design based on one-section bottom bottom or two-point bottom bottom is increasingly unable to meet the current diverse seabed change needs and High-standard multi-section bottom-sitting operation design capability. [0003] Taking the multi-section bottom-sitting salvage and lifting engineering ship as an example, in addition to meeting the design requirements of conventional engineering ships, this ship type has complex and changeable submarine reefs, wave environment in the sea area at the bottom, the position of the salvaged goods and the location of the ship. The extreme uncertainty of the bottom posi...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of the existing hull stowage, the hull stowage can not adapt to the overall design engineering requirements of the current multi-segment bottom salvage and lifting engineering ship and the finite element nonlinear contact problem of the whole ship, the multi-segment ground reaction force is calculated and solved. In order to deal with problems such as large computer processing load, a calculation method for the overall stowage of multi-section bottom-mounted ship structures is provided.

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