A method and system for analyzing the dynamic contribution of each component in a system-level analysis model

An analysis model and analysis method technology, applied in the direction of instrumentation, design optimization/simulation, electrical digital data processing, etc., can solve the problems of not being able to give a quantitative description of the component's dynamic contribution degree, lack of dynamic contribution degree analysis technology, etc., to avoid calculation Effects of cost and opportunity

Active Publication Date: 2022-03-25
NUCLEAR POWER INSTITUTE OF CHINA
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  • Abstract
  • Description
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Problems solved by technology

[0009] The technical problem to be solved by the present invention is that there is a lack of analysis technology for the power contribution degree of each component under the system-level dynamic analysis model in the prior art, and it is impossible to give a quantitative description of the power contribution degree of each component. The purpose is to provide a system-level analysis model A method and system for analyzing the dynamic contribution of each component to solve the above problems

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  • A method and system for analyzing the dynamic contribution of each component in a system-level analysis model
  • A method and system for analyzing the dynamic contribution of each component in a system-level analysis model
  • A method and system for analyzing the dynamic contribution of each component in a system-level analysis model

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Embodiment 1

[0065] like figure 1 As shown, a method for analyzing the dynamic contribution of each component of a system-level analysis model of the present invention includes: S1: establishing a dynamic analysis model of a reactor system, and extracting a global mass matrix and a global stiffness matrix in the dynamic analysis model; S2: Perform modal analysis on the dynamic analysis model according to the global mass matrix and the global stiffness matrix; S3: Obtain a modal strain energy equation of the dynamic analysis model according to the modal analysis, and obtain a modal strain energy equation of the dynamic analysis model according to the modal strain energy The equation obtains the modal strain energy of each single component in each order mode; S4: normalize the modal strain energy of each single component to obtain the normalized modal strain energy, according to the normalized modal strain energy Get the power contribution of each single component.

[0066] In the implement...

Embodiment 2

[0099] In this embodiment, a system for analyzing the dynamic contribution of each component of a system-level analysis model includes:

[0100] Modeling unit: used to establish the dynamic analysis model of the reactor system;

[0101] Extraction unit: used to extract the global mass matrix and the global stiffness matrix in the dynamic analysis model;

[0102] Analysis unit: used to perform modal analysis on the dynamic analysis model according to the global mass matrix and the global stiffness matrix;

[0103] processing unit: used to obtain the modal strain energy equation of the dynamic analysis model according to the modal analysis, and obtain the modal strain energy of each single component in each order mode according to the modal strain energy equation;

[0104] Normalization unit: used to normalize the modal strain energy of each single component to obtain the normalized modal strain energy, and obtain the dynamic contribution degree of each single component accordi...

Embodiment 3

[0108] This embodiment is based on Embodiment 1 and Embodiment 2,

[0109] The embodiments of the present application provide a method for analyzing the dynamic contribution of several key components in a reactor system along the axis of the reactor pressure vessel, the method comprising:

[0110] 1. Use the finite element calculation program to carry out dynamic analysis and modeling of the reactor system. The key components included in the model include: fuel assembly (FA), core basket (CB), upper internals (UVI), core shroud (CS), control rod drive mechanism (CRDM), reactor pressure vessel (RPV) ), the integrated top structure (UVI).

[0111] 2. Extract the global mass and stiffness matrices in the system-level dynamic analysis model, denoted as M and K, and record the mass and stiffness matrices of the system-level model in a text file in the form of sparse matrix storage.

[0112] 3. Carry out modal analysis according to the mass and stiffness matrices of the system-lev...

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Abstract

The invention discloses a method for analyzing the dynamic contribution of each component of a system-level analysis model, comprising: establishing a dynamic analysis model of a reactor system to extract a global mass matrix and a global stiffness matrix; performing modal analysis on the dynamic analysis model; obtaining the dynamic analysis model The modal strain energy equation, and obtain the modal strain energy of each single component in each mode; obtain the normalized modal strain energy, and obtain the dynamic contribution degree of each single component. The invention also discloses a dynamic contribution degree analysis system of each component of the system-level analysis model. The present invention utilizes the calculation method provided by the present invention to quantitatively study and investigate the dynamic contribution degree of each equipment or component in a system-level dynamic analysis model under a specific degree of freedom, and can fully grasp its presence in the existing system at the initial stage of equipment or component design. The degree of dynamic contribution under coupling provides a quantitative reference for the preliminary mechanical design and subsequent structural optimization of equipment and components.

Description

technical field [0001] The invention relates to the field of reactor structural mechanics, in particular to a method and system for analyzing the dynamic contribution of each component of a system-level analysis model. Background technique [0002] The dynamic analysis and load distribution calculation of the main reactor systems (coolant system, reactor system, purification system, auxiliary system, etc.) are important links in the structural design of the reactor and its auxiliary systems, and are the main technical means for structural safety assessment. System-level dynamic analysis and calculation is the upstream of carrying out reactor system load distribution research and safety analysis. The system-level dynamic analysis model usually includes the main equipment in the reactor and primary loop system (eg, reactor pressure vessel, coolant main pump, steam generator, pressurizer), piping (eg, main piping, auxiliary piping) and other auxiliary systems (eg, waste heat r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F119/14
CPCG06F30/23G06F2119/14
Inventor 熊夫睿黄茜叶献辉沈平川兰彬
Owner NUCLEAR POWER INSTITUTE OF CHINA
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