Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Simplified incremental iteration method for calculating ultimate strength of luxurious cruise ship

A technology of ultimate strength and incremental iteration, which is applied in design optimization/simulation, instrumentation, electrical digital data processing, etc., can solve problems such as not satisfying the flat section assumption, achieve short calculation operation time, stable and accurate calculation results, and high efficiency Improved effect

Pending Publication Date: 2020-07-28
ZHEJIANG UNIV OF TECH
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of shear deformation in the bending process of luxury cruise ships, the assumption of plane section is not satisfied, so the traditional Smith method cannot be directly used to calculate the ultimate strength of luxury cruise ships

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Simplified incremental iteration method for calculating ultimate strength of luxurious cruise ship
  • Simplified incremental iteration method for calculating ultimate strength of luxurious cruise ship
  • Simplified incremental iteration method for calculating ultimate strength of luxurious cruise ship

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] The present invention will be further described below in conjunction with the accompanying drawings.

[0063] refer to Figure 1 to Figure 5 , a simplified incremental iterative method suitable for calculating the ultimate strength of a luxury cruise ship, by continuously increasing the curvature of the main hull and superstructure, when the average shear displacement of the transfer layer reaches the ultimate shear displacement, the hull girder cross-section The bending moment suffered above is regarded as the ultimate bending moment. On the basis of the Smith method, combined with the force and deformation characteristics of the passenger ship under the limit state, the deformation diagram of the side longitudinal wall from the stern to the midship in the sagging state is shown in the attached figure 1 (magnified by 60 times), the following assumptions are made: 1) The main hull and superstructure conform to the assumption of plane section during the bending process; ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a simplified incremental iteration method suitable for calculating ultimate strength of a luxurious cruise ship. The method comprises: establishing luxury cruise ship cross section calculation model; calculating the shearing rigidity, the ultimate shearing displacement and the total shearing rigidity of each supporting component of the conversion layer, and obtaining the ultimate shearing displacement of the whole conversion layer through comparison; respectively calculating initial neutralization elastic neutralization axis positions of the main hull and the superstructure; adjusting the position of a neutralizing shaft, and calculating longitudinal tension and pressure of the superstructure and the main hull until tension and pressure balance of the superstructure and the main hull is realized; obtaining the total bending moment on the cross section of the whole hull beam and the average shear displacement of the conversion layer; increasing curvatures of themain hull and the superstructure, and calculating corresponding strain and corresponding stress of each unit; and stopping increasing the curvature until the average shear displacement of the conversion layer reaches the limit shear displacement, and outputting the total bending moment. The method has high precision and efficiency.

Description

technical field [0001] The invention belongs to the field of ship structure design and relates to a simplified calculation method for the ultimate strength of luxury cruise ships. Background technique [0002] The superstructure of a luxury cruise ship has a large volume, complex structure, and large openings in the side walls, resulting in small shear stiffness and relatively large shear deformation, which weakens the role of the superstructure in the general longitudinal bending process and reduces the ultimate strength of the hull girder . Due to the existence of shear deformation in the bending process, the luxury cruise ship does not satisfy the assumption of plane section, so the traditional Smith method cannot be directly used to calculate the ultimate strength of the luxury cruise ship. Although the nonlinear finite element calculation of the whole ship can obtain the ultimate strength of the hull girder of the luxury cruise ship, it takes a lot of time and energy. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F30/15G06F30/23G06F119/14
Inventor 吴剑国邵智华田恬
Owner ZHEJIANG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com