CN110322562A - A kind of discrete element 3DEC model reconstruction method based on X-CT - Google Patents
A kind of discrete element 3DEC model reconstruction method based on X-CT Download PDFInfo
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- CN110322562A CN110322562A CN201910592012.0A CN201910592012A CN110322562A CN 110322562 A CN110322562 A CN 110322562A CN 201910592012 A CN201910592012 A CN 201910592012A CN 110322562 A CN110322562 A CN 110322562A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
- G06T17/20—Finite element generation, e.g. wire-frame surface description, tesselation
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Abstract
The present invention provides a kind of new construction methods based on X-CT scanning, the discrete element 3DEC model meshes of Three Dimensional Reconfiguration, for solving the problems, such as using X-CT scanning, discrete element 3DEC model meshes of the Three Dimensional Reconfiguration building based on authentic sample.By writing model meshes conversion interface program, by the ANSYS finite element model Mesh Conversion for using X-CT scanning, Three Dimensional Reconfiguration to obtain for discrete meta software 3DEC formatted file, later, this document is read into 3DEC, discrete element analysis grid is generated, and then realizes the reconstruct and building of the discrete element 3DEC model meshes based on X-CT scanning, Three Dimensional Reconfiguration.
Description
Technical field
The present invention relates to a kind of discrete meta software 3DEC model meshes construction method based on X-CT scanning technique.
Background technique
X-CT (Computerized Tomography), i.e. X ray computer Tomography technology, are a kind of nothings
Detection means is damaged, article internal structure distribution characteristics can be obtained in the case where not damaging article internal structure.In rock
Mechanics field, the coal obtained according to X-CT scanning, rock sample inner structural features, in conjunction with computer technology, in coal, rock sample
Portion's structure is reconstructed and grid dividing, establishes the Three-dimension Numerical Model based on true coal, rock sample internal structure, and according to examination
It tests analysis result to verify the numerical model, and then carries out the mode of other researchs in recent years using the Three-dimension Numerical Model
Just to become more and more extensive.
The difference of used numerical simulation software principle when according to analysis and research problem in science, existing numerical simulation software can
It is divided into two kinds, i.e. finite element and discrete element numerical simulation software.Finite element is different with two kinds of numerical simulation software principles of discrete element,
In the numerical simulation of scientific research and engineering practice, scientific research personnel frequently with these two types of different principles software to scientific research
Or the same problem in engineering practice is simulated respectively, and both software results are mutually authenticated, it is credible to obtain
Spend higher research achievement.However, due to the limitation based on X-CT technology model three-dimensionalreconstruction and grid dividing software type,
In the past based on X-CT technology model three-dimensionalreconstruction, grid dividing and derived grid attribute based on finite element grid format, such as
FLAC3D, ANSYS, ABAQUS format etc., and blank is still belonged to the foundation of discrete meta software 3DEC model meshes.Based on the above feelings
Condition is badly in need of inventing a kind of discrete element analysis grid reconstruction method in reality, solves the three-dimensionalreconstruction and model of X-CT scanning technique
During grid dividing, discrete meta software 3DEC model meshes establish problem.
Summary of the invention
The present invention will obtain finite element model grid based on X-CT technology reengineering and grid dividing by writing interface routine
ANSYS formatted file is converted into discrete element software model grid 3DEC formatted file, realizes three based on X-CT technology model
Tie up the purpose of reconstruction model discrete model grid dividing.
A kind of discrete element 3DEC model meshes division methods based on X-CT, are primarily characterized in that and comprise the following steps:
It (1) will be based in the finite element model meshes obtained after the scanning of X-CT technology, three-dimensionalreconstruction, grid dividing
Node coordinate and cell cube number are exported and are stored respectively, and wherein cell cube number includes the component information in model meshes；
(2) according to grid node and the coordinate of cell cube and number arrangement are advised in output file in FEM-software ANSYS
Then, the coordinate and number that respective mesh node and cell cube should have in discrete meta software 3DEC are compared, and according to phase in 3DEC
The naming & numbering rule for answering cell cube grid node, cell cube, writes interface conversion software, generates 3DEC command file；
(3) the 3DEC command file of generation is read in into 3DEC Software Create respective nodes and cell cube grid model and protected
It deposits, carries out other researchs so as to subsequent.
The invention has the following advantages that
The present invention provides a kind of new methods, solve asking using X-CT technology building discrete element 3DEC model meshes
Topic.In the conversion process of finite element model grid to discrete element grid model, realize model meshes node to grid node,
Cell cube can ensure that the node of grid model and cell cube number, component, node coordinate in conversion process to the conversion of cell cube
Etc. information consistency.
Detailed description of the invention
Fig. 1 is the discrete element 3DEC model meshes restructuring procedure based on X-CT technology reengineering and grid dividing
Fig. 2 is model grid cell body, Node schematic diagram in interface software
Specific embodiment
A kind of discrete element 3DEC model meshes reconstructing method based on X-CT technology, it includes the examinations after X-CT image reconstruction
Sample 1, ANSYS model meshes 2, grid 3 in ANSYS model, grid 4,3DEC model meshes document 5,3DEC mould in 3DEC model
Impurity 7 in type grid 6, sample, matrix 8 in sample, impurity 9 in ANSYS model, matrix 10 in ANSYS model, in 3DEC model
Matrix 12, array 13, ANSYS cell cube message file 14, ANSYS nodal information file 15, unit in impurity 11,3DEC model
Body information stores array 16, nodal information stores array 17.Implementation process is as follows:
(1) grid dividing will be carried out according to the sample 1 after X-CT image reconstruction first, and exporting is ANSYS model meshes
2；
(2) grid 4 in 3DEC model is converted by grid 3 in ANSYS model each in ANSYS model meshes 2, and exports and is
3DEC model meshes document 5；
(3) 3DEC model meshes document 5 is read into 3DEC software, obtains 3DEC model meshes 6；
(4) to be converted into 4 process of grid in 3DEC model as follows for grid 3 in ANSYS model, first creation array 13, will
ANSYS cell cube message file 14 is read into cell cube information storage array 16, ANSYS nodal information file 15 is read into node
Information stores array 17, later, each node and cell cube information is exported by grid node format conversion in 3DEC, obtain 3DEC
Model meshes document 5.
Claims (1)
1. a kind of discrete element 3DEC model reconstruction method based on X-CT, is primarily characterized in that and comprises the following steps:
It (1) will be based on the finite element model meshes interior joint obtained after the scanning of X-CT technology, three-dimensionalreconstruction, grid dividing
Coordinate and cell cube number are exported and are stored respectively, and wherein cell cube number includes the component information in model meshes.
(2) right according to grid node and the coordinate of cell cube and number queueing discipline in output file in FEM-software ANSYS
The coordinate and number that should have than respective mesh node and cell cube in discrete meta software 3DEC, and according to corresponding units in 3DEC
The naming & numbering rule of volume mesh node, cell cube, writes interface conversion software, generates 3DEC command file.
(3) the 3DEC command file of generation is read in into 3DEC Software Create respective nodes and cell cube grid model and saved, with
Continue after an action of the bowels and carries out other researchs.
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| CN201910592012.0A CN110322562A (en) | 2019-07-02 | 2019-07-02 | A kind of discrete element 3DEC model reconstruction method based on X-CT |
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| CN201910592012.0A CN110322562A (en) | 2019-07-02 | 2019-07-02 | A kind of discrete element 3DEC model reconstruction method based on X-CT |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129508A (en) * | 2011-02-22 | 2011-07-20 | 华南理工大学 | Method for rapidly acquiring impact fracture characteristics of brittle material |
| US20120016639A1 (en) * | 2009-03-20 | 2012-01-19 | Xidian University | Optimization design method for the chassis structure of an electronic device based on mechanical, electrical and thermal three-field coupling |
| CN108090313A (en) * | 2018-02-05 | 2018-05-29 | 东北大学 | A kind of Complex Rock model of fissuration models recognition methods |
| CN109242965A (en) * | 2018-07-02 | 2019-01-18 | 中国科学院武汉岩土力学研究所 | A kind of model conversion method that 3DEC is imported by Midas based on c# |
-
2019
- 2019-07-02 CN CN201910592012.0A patent/CN110322562A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120016639A1 (en) * | 2009-03-20 | 2012-01-19 | Xidian University | Optimization design method for the chassis structure of an electronic device based on mechanical, electrical and thermal three-field coupling |
| CN102129508A (en) * | 2011-02-22 | 2011-07-20 | 华南理工大学 | Method for rapidly acquiring impact fracture characteristics of brittle material |
| CN108090313A (en) * | 2018-02-05 | 2018-05-29 | 东北大学 | A kind of Complex Rock model of fissuration models recognition methods |
| CN109242965A (en) * | 2018-07-02 | 2019-01-18 | 中国科学院武汉岩土力学研究所 | A kind of model conversion method that 3DEC is imported by Midas based on c# |
Non-Patent Citations (2)
| Title |
|---|
| HOUJIANGZH: "ansys to 3dec转换程序", 《HTTPS://DOWNLOAD.CSDN.NET/DOWNLOAD/HOUJIANGZH/8614873》 * |
| 万成: "基于X-ray CT和有限元方法的沥青混合料三维重构与数值试验研究", 《中国博士学位论文全文数据库 (工程科技Ⅱ辑)》 * |
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Application publication date: 20191011 |