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High-temperature creep deformation prediction and creep damage analysis method for high-chrome steel component

A high-temperature creep and analysis method technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as consumption, large computing resources, and difficult determination of material parameters

Inactive Publication Date: 2017-03-22
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0007] 2. For more complex constitutive models, the determination of material parameters in the model is usually a difficult problem
For different temperature and stress loading conditions, this process usually needs to be repeated many times, thus consuming a lot of computing resources

Method used

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  • High-temperature creep deformation prediction and creep damage analysis method for high-chrome steel component
  • High-temperature creep deformation prediction and creep damage analysis method for high-chrome steel component
  • High-temperature creep deformation prediction and creep damage analysis method for high-chrome steel component

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Embodiment Construction

[0097] The present invention will be further described below in conjunction with specific embodiments.

[0098] The invention aims at proposing a systematic solution for high-temperature creep deformation prediction and creep damage analysis of high-chromium steel components. The content of the scheme includes the establishment of theoretical models, the determination of material parameters, the design of numerical integration algorithms, the secondary development of finite element software, and the analysis of creep damage of components, etc. The program will pass figure 1 The implementation of the technology roadmap shown specifically includes the following steps:

[0099] 1) Establish a new material constitutive model, that is, a theoretical model, to simulate the thermodynamic response of high-chromium steel materials in the entire creep process (including three stages), and to analyze the creep damage of materials.

[0100] The theoretical model established is as follo...

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Abstract

The invention discloses a high-temperature creep deformation prediction and creep damage analysis method for a high-chrome steel component. The method comprises the following steps of: establishing a theoretical model, determining material parameters, designing a numerical integration algorithm, carrying out the secondary development of finite element software, carrying out the creep damage analysis of the component and the like. Compared with an existing technical scheme, the method disclosed by the invention is characterized in that a great improvement is carried out, the accurate prediction of the creep behavior and the creep damage of the high-chrome steel component can be realized, and therefore, the method has an important application value in the fields of the security design and the residual life evaluation of high-temperature high-pressure components in a supercritical generator set.

Description

technical field [0001] The invention relates to the technical field of safety design and remaining life evaluation of high-temperature and high-pressure components in supercritical power generating sets, in particular to a method for predicting high-temperature creep deformation and creep damage analysis of high-chromium steel components. Background technique [0002] As a new type of creep-resistant alloy material, high-chromium steel (such as P91 steel, P92 steel, E911 steel, etc.) has excellent properties such as high creep strength, high hardness, corrosion resistance, and easy welding under high temperature and high pressure conditions. It has been widely used in the construction of supercritical power plants all over the world, and is regarded as an ideal material for manufacturing the next generation of ultra-supercritical generator sets. [0003] One of the main operational risks faced by high chromium steel components under high temperature and long-term loading con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23G06F2119/04
Inventor 王炯蔡晓丹
Owner SOUTH CHINA UNIV OF TECH
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