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Method for calculating ultimate strength of luxurious cruise ship by using single-span finite element model

A technology of ultimate strength and finite element, applied in the direction of design optimization/simulation, geometric CAD, etc., can solve the problems of heavy modeling workload and unaffordable calculation, and achieve high efficiency, good practical value, and simple pre-processing Effect

Pending Publication Date: 2020-06-05
ZHEJIANG UNIV OF TECH
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Problems solved by technology

The results show that the classic one-span finite element model based on the assumption of plane section is not suitable for the calculation of the ultimate strength of a luxury cruise ship with superstructure; the finite element analysis of the whole ship is considered to be an adequate assessment of the overall structural response of the hull, but the The workload of method modeling is very large, and the amount of calculation is beyond the capacity of general workstations

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  • Method for calculating ultimate strength of luxurious cruise ship by using single-span finite element model
  • Method for calculating ultimate strength of luxurious cruise ship by using single-span finite element model
  • Method for calculating ultimate strength of luxurious cruise ship by using single-span finite element model

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] refer to Figure 1 to Figure 5 , a method for calculating the ultimate strength of a luxury cruise ship using a single-span finite element model, including the following steps:

[0028] Step S1, establishing a single-span finite element model for calculating the ultimate strength of the cross-section of a luxury cruise ship;

[0029] Step S2, fully constraining an end face of the model;

[0030] Step S3, respectively take the superstructure (including the transfer layer), the nodes on the same end surface of the main hull and their centroids as rigid body coupling;

[0031] Step S4, binding the respective centroids of the superstructure and the main hull with the entire section centroid through MPC;

[0032] Step S5, applying bending moment or angular displacement on the centroid of the entire section;

[0033] Step S6, perform nonlinear finite element calcu...

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Abstract

The invention discloses a method for calculating the ultimate strength of a luxury cruise ship through a single-span finite element model, and belongs to the field of ship structure design. It is supposed that the luxurious cruise ship superstructure and the main ship body are two beams which are precisely connected; the superstructure and the main hull are considered to be bent and rotated aroundrespective centroids, so that a 'double-plane method for calculating the ultimate strength of the luxurious cruise ship by utilizing a single-span finite element model is provided, and compared withthe ultimate strength finite element calculation result of the whole luxurious cruise ship, the method has higher precision and efficiency.

Description

technical field [0001] The invention is based on the theory of ship finite element analysis, relates to the field of ship limit state analysis, and in particular relates to a method for determining the ultimate strength of a luxury cruise ship using a single-span finite element model. Background technique [0002] The ultimate strength and residual strength requirements of luxury cruise ships should be higher than those of cargo ships. The superstructure of a luxury cruise ship is tall and long, and there are a large number of openings and weak layers, resulting in inconsistent bending deformation of the superstructure and the main hull. method of ultimate strength assessment. [0003] At the 16th ISSC meeting, the ultimate strength calculation of an ideal Panamanian passenger ship was discussed and studied, and the analysis of the one-span model using Smith method and ISUM and the whole ship model using 3D finite element software LS-DYNA were respectively compared. The pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/15
Inventor 吴剑国李福龙姚强
Owner ZHEJIANG UNIV OF TECH
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