Method for manufacturing finite element method mechanical computation model of pipeline system

A finite element and calculation model technology, applied in the pre-processing field of pipeline finite element calculation, can solve the problems of long time required for pipeline calculation, affecting the calculation efficiency of nuclear-grade pipeline mechanics in nuclear power plants, and the large amount of calculation of nuclear power plant pipelines, etc., to achieve efficiency improvement , the effect of reducing the requirement

Active Publication Date: 2010-09-08
CHINA NUCLEAR POWER ENG CO LTD
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Problems solved by technology

Using this method will lead to a long time for pipeline calculation, and the calculation of nuclear power plant pipelines is very large, which seriously affects the mechanical calculation efficiency of nuclear grade pipelines in nuclear power plants

Method used

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  • Method for manufacturing finite element method mechanical computation model of pipeline system
  • Method for manufacturing finite element method mechanical computation model of pipeline system
  • Method for manufacturing finite element method mechanical computation model of pipeline system

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Such as figure 2 , image 3 As shown, a method for making a mechanical calculation model of a pipeline system with finite element method includes the following steps:

[0028] (1) Define the data parameter format, including coordinate parameters, elbow parameters, and coordinate offset parameters;

[0029] (2) Preparation of pre-processing model input data files: According to the design drawings of pipeline topics, make pre-processing model input data files, the data includes control data and model description data, the control data is effective for the entire calculation topic, and the model description data is used for illustration Enter point coordinates, pipe sections, dimensions, support points, and other properties. The data file is firstly the control data, followed by a one-time description of the pipeline geometry and physics as well...

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Abstract

The invention belongs to the pre-treatment of pipeline finite element computation required by the mechanical computation of a nuclear power plant nuclear pipeline, and in particular relates to a method for manufacturing a finite element method mechanical computation model of a pipeline system. The method is characterized in that: a user does not need to input multiple kinds of information repeatedly for multiple times and only one-time description is needed, so that the efficiency of pipeline computation is greatly improved; furthermore, requirements on the user preparing the model are reduced; only specification grade and anti-seismic grade are required to be known, and the requirements on a computation program which needs to be considered, such as the requirement on the length of a maximum unit, the requirement on the output of valve computation maximum acceleration and the like do not need to be considered; and the user even has no necessary to know the existence of a node and a unit.

Description

technical field [0001] The invention relates to the preprocessing of pipeline finite element calculation required for mechanical calculation of nuclear-grade pipelines in nuclear power plants, and in particular to a method for making a mechanical calculation model of a pipeline system with finite element method. Background technique [0002] At present, the establishment of the mechanical calculation model of the finite element method for pipeline calculation generally requires repeated descriptions of different contents on the design drawings according to the input data requirements of the calculation program. The data input process is as follows: figure 1 Shown: Firstly, repeatedly input description data for calculation nodes, then for pipeline units, and then for pipeline materials, boundary conditions, etc. For the evaluation of the analysis stress under the design working conditions, the output of the pipe support load also requires the user to clearly give the analysis...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 刘树斌
Owner CHINA NUCLEAR POWER ENG CO LTD
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