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Metal corrosion form simulation method based on three-dimensional cellular automaton technology

A cellular automata, three-dimensional cell technology, applied in the fields of weather resistance/light resistance/corrosion resistance, instruments, electrical digital data processing, etc.

Pending Publication Date: 2018-12-07
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Or only model the system at the microscopic or mesoscopic level, which cannot reflect the impact of corrosion on the macroscopic performance of components

Method used

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  • Metal corrosion form simulation method based on three-dimensional cellular automaton technology
  • Metal corrosion form simulation method based on three-dimensional cellular automaton technology
  • Metal corrosion form simulation method based on three-dimensional cellular automaton technology

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Embodiment Construction

[0046] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0047] like figure 1 As shown, a kind of metal corrosion morphology simulation method based on three-dimensional cellular automata technology of the present invention mainly includes the following steps:

[0048] 1. Based on the geometric shape of the component, select the type of coordinate system, divide the metal component and the external corrosion environment into an array of cells according to the corrosion simulation accuracy requirements, establish a three-dimensional cell space, and determine the boundary conditions;

[0049] 2. Determine the various types of cells, and determine the properties of the cells on each grid position in the cell space according to t...

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Abstract

The invention discloses a metal corrosion form simulation method based on a three-dimensional cellular automaton technology. The method comprises the following steps that: S1: establishing a three-dimensional cellular space, and determining a boundary condition; S2: determining a cellular type, and determining a cellular attribute on each case in the cellular space; S3: through a corrosion particle diffusion rule, a metal surface passivation film breakage rule and chemical reaction which happens in a corrosion process, determining a cellular conversion rule; S4: simulating the evolution process of even corrosion and corrosive pitting of the same construction member under the same environment; S5: comparing an even corrosion rate model obtained by an experiment with a simulated evolution process of even corrosion to obtain a corresponding relationship between corrosion duration and a step size; and S6: processing a cellular automaton simulation result of the corrosive pitting, and simulating the evolution rule and the form distribution of the corrosive pitting. The method can be used for simulating the real corrosion evolution process of a metal construction member under the specific external environment, and a foundation is provided for subsequent anti-corrosion researches.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion process simulation, and in particular relates to a metal corrosion form simulation method based on three-dimensional cellular automata technology. Background technique [0002] Corrosion seriously affects the service performance and fatigue life of metal components. Among all types of corrosion, pitting corrosion is the most common form of corrosion damage to metal components, and it is also one of the most destructive and hidden forms of corrosion. Pitting corrosion is a very complex process, which includes many physical and chemical phenomena, such as metal dissolution and passivation, hydrogen embrittlement, stress concentration, transfer and accumulation of corrosion products, etc. At the same time, there are many factors affecting pitting corrosion, such as the chemical composition of the metal, the pH value and temperature of the medium, the composition and concentration of the medi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G01N17/00
CPCG01N17/006G06F30/20
Inventor 王莹郑宇倩
Owner SOUTHEAST UNIV
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