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An isogeometric analysis-based porous plate mechanical property analysis method

A technology of isogeometric analysis and analysis method, which is applied in the field of calculation and analysis of porous plates decomposed into multiple sub-areas, can solve the problems of large calculation capacity and low efficiency, and achieve the goals of simplifying the problem scale, improving efficiency, and fast mechanical performance analysis Effect

Inactive Publication Date: 2016-08-17
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology

[0003] The present invention is carried out to solve the above problems, and the purpose is to provide a method for analyzing the mechanical properties of porous plates based on isogeometric analysis, so as to solve the problems of large calculation capacity and low efficiency when performing finite element analysis on the structure of porous plates.

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  • An isogeometric analysis-based porous plate mechanical property analysis method
  • An isogeometric analysis-based porous plate mechanical property analysis method
  • An isogeometric analysis-based porous plate mechanical property analysis method

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Embodiment Construction

[0023] In order to make the technical means, creative features, goals and effects of the present invention easy to understand, the following examples will specifically illustrate a method for analyzing the mechanical properties of porous plates based on isogeometric analysis involved in the present invention in conjunction with the accompanying drawings.

[0024] Step 1, constructing the geometric model of the porous plate to obtain the geometric model of the porous plate;

[0025] The isogeometric analysis method is based on the parametric model of the plate shell. If the plate thickness is uniform, it is only necessary to construct a two-variable volume parameterized analysis domain, and if the plate thickness is uneven, a three-variable volume parametric model needs to be constructed. The general three-variable volume parameterized model is expressed as:

[0026] T ( x , y , z ...

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Abstract

The invention provides an isogeometric analysis-based porous plate mechanical property analysis method. The method comprises the steps of converting a porous plate computation domain into a simply-connected computation domain with complex borders; dividing the simply-connected computation domain into a plurality of sub-segment domains through a segmentation method; incorporating the problem of physical domains to a linear equation system via a finite element method for solving the problem; finally obtaining the analysis results of all the physical domains through the solution of the linear equation system. Through comparison validation with analysis results of the conventional finite element method, it is proved that the method is practical and effective for the computation of porous plates. The method can establish a porous plate model more accurately and greatly increase the problem solving efficiency.

Description

technical field [0001] The invention belongs to the field of structural mechanics analysis, and mainly relates to decomposing a porous plate into multiple sub-regions for calculation and analysis. Background technique [0002] The perforated plate structure is widely used in various mechanical equipment, and its characteristic is that many small holes are periodically distributed on the part body, and the size of these small holes is much smaller than the overall size of the perforated plate. In nuclear power equipment and other process equipment such as steam generator tube sheets, support plates, heat exchanger tube sheets, baffles, and flow plates in process equipment, there are also some parts that use a large number of screws or bolts, such as Full-automatic die-cutting machine main unit sets wall panels, etc. Due to the existence of a large number of dense holes, the strength of the perforated plate has been greatly weakened, and its strength, safety and reliability h...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/367G06F2113/24
Inventor 陈龙产启平
Owner UNIV OF SHANGHAI FOR SCI & TECH
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