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Container similarity model construction method based on multi-objective optimization and topological optimization

A multi-objective optimization and topology optimization technology, which is applied in the field of container similar model construction, can solve problems such as difficult production, and achieve the effects of reducing difficulty, strong rationality, and good applicability

Inactive Publication Date: 2019-10-08
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

In addition to the frame structure, other parts mainly adopt the skin-type corrugated plate structure, which is difficult to manufacture under laboratory conditions

Method used

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  • Container similarity model construction method based on multi-objective optimization and topological optimization
  • Container similarity model construction method based on multi-objective optimization and topological optimization
  • Container similarity model construction method based on multi-objective optimization and topological optimization

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Embodiment

[0032] Such as figure 1 As shown, a container similar model construction method based on multi-objective optimization and topology optimization, the method includes the following steps:

[0033] (1) Construct a 1:1 finite element model and a scale-down finite element model of the container;

[0034] (2) Determine the optimization target, the optimization target includes static characteristics and dynamic characteristics;

[0035] (3) Perform static and dynamic analysis on the 1:1 finite element model to obtain the static characteristics and dynamic characteristic parameters of the 1:1 finite element model;

[0036] (4) According to the static characteristics and dynamic characteristic parameters of the 1:1 finite element model, the optimization target value of the finite element model with a reduced scale ratio is constructed based on the Froude scaling theorem;

[0037] (5) Carry out topology optimization on the wall structure of the scale ratio finite element model to obta...

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Abstract

The invention relates to a container similarity model construction method based on multi-objective optimization and topological optimization. The container similarity model construction method comprises the following steps: (1) constructing a container 1: 1 finite element model and a scale ratio finite element model; (2) determining an optimization target, wherein the optimization target comprisesstatic characteristics and dynamic characteristics; (3) acquiring static characteristics and dynamic characteristic parameters of the 1: 1 finite element model; (4) constructing an optimization target value of the scale ratio finite element model based on the Froude scale theorem; (5) performing topological optimization on the wall structure of the scale ratio finite element model to obtain the shape of the wall structure; (6) obtaining sensitive design parameters of the scale ratio finite element model; and (7) optimizing the sensitive design parameters of the scale ratio finite element model until the optimization target true value converges to the optimization target value, and obtaining the container scale ratio finite element model determined by optimization as the container similarity model. Compared with the prior art, the container similarity model construction method is simple, practical, effective and wide in application range.

Description

technical field [0001] The invention relates to a method for building a similar model of a container, in particular to a method for building a similar model of a container based on multi-objective optimization and topology optimization. Background technique [0002] Containerization has played a vital role in the globalization of trade, with ultra-large container ships now transporting more than 20,000 boxes at a time. It is estimated that about 10,000 containers are lost during sea transportation every year, causing huge economic losses to the shipping industry. At present, most of the research on the structural strength of containers is based on the numerical calculation of finite element software, but the mechanism of container loss during shipping is still unclear. In the process of sea transportation, it is not realistic to conduct real-time tests on container stacks up to tens of meters. Therefore, it is a feasible method to test and verify the structural strength of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2111/06G06F30/17G06F30/23
Inventor 王德禹刘佳琦李春通
Owner SHANGHAI JIAO TONG UNIV
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