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Efficient concrete two-dimensional aggregate generation and feeding method-residual space method

An injection method and concrete technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of low efficiency, long time consumption, and difficulty in defining aggregate parameters in the later stage, achieving guaranteed versatility and high efficiency. , programming simple effect

Pending Publication Date: 2021-06-29
GUANGXI UNIV
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  • Application Information

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Problems solved by technology

[0006] In summary, due to the low efficiency and time-consuming of the current random aggregate generation and delivery algorithm in the later stage, the shape of randomly generated aggregates is difficult to define aggregate parameters, and there are few related studies on recycled concrete, so it is necessary to establish a different concrete type , A common concrete mesoscopic model generation algorithm under different aggregate assumptions

Method used

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  • Efficient concrete two-dimensional aggregate generation and feeding method-residual space method
  • Efficient concrete two-dimensional aggregate generation and feeding method-residual space method
  • Efficient concrete two-dimensional aggregate generation and feeding method-residual space method

Examples

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Effect test

example 1

[0095] This example illustrates the generation and placement of regenerated concave polygon aggregates. The concave polygon is generated based on the convex polygon and includes the operation of the convex polygon;

[0096] Step 1. Determine the matrix size and build a model

[0097] Generate background pixels:

[0098] According to the real size of the simulated test piece (100mm×100mm), determine the size of the aggregate delivery area x max ×y max =100×100, draw up the scale u=5 according to the required precision, and generate (u×y) whose element values ​​are all 1 in the programming software max )×(u×x max )=500×500 two-dimensional matrix is ​​used as the background pixel of the model, each element in the matrix corresponds to the square unit in the background pixel, and the number, node coordinates and center point coordinates of each element are recorded; for example: No. 1 element The coordinates of the center point are (0.5,0.5), and this element can also be regar...

example 2

[0148] The purpose of this example is to illustrate the generation and delivery of circles, ellipses and ovals. Since circles, ellipses and ovals only have different shape formulas, the generation and delivery of a more special oval aggregate is selected for illustration.

[0149] Step 1. Determine the matrix size and build a model

[0150] Generate background pixels:

[0151] According to the real size of the simulated specimen (100mm×80mm), determine the size of the aggregate delivery area x max ×y max =100×80, draw up the scale u=6 according to the required precision, and generate (u×y) whose element values ​​are all 1 in the programming software max )×(u×x max )=480×600 two-dimensional matrix is ​​used as the background pixel of the model, each element in the matrix corresponds to the square unit in the background pixel one by one, and records the serial number, node coordinates and center point coordinates of each element;

[0152] Generate two sets of pixel sampling ...

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Abstract

The invention relates to an efficient concrete two-dimensional aggregate generation and feeding method, namely a residual space method, and belongs to the field of concrete mesoscopic modeling. According to the invention, the method comprises the steps: combining the two-dimensional matrix and the gray level image, and integrating a generation method for unifying different aggregate shapes; proposing that an oval standard equation is applied to concrete mesoscopic modeling; providing a novel concave-convex polygon aggregate generation algorithm capable of considering the slenderness ratio, the roundness and the asymmetry degree of the aggregate; and providing an aggregate overlapping judgment mode suitable for two-dimensional aggregates with different shapes. Based on the skeleton theory, the invention provides an efficient putting method to solve the problem of low efficiency in the later period of aggregate putting, and the specific algorithm is as follows: when the aggregate is put every time, the center of the aggregate is inevitably located in a non-put area in the previous round of model; the efficiency of aggregate feeding can be remarkably improved by selecting the skeleton of the non-feeding area as the feeding point.

Description

technical field [0001] The present invention relates to a method for generating and placing high-efficiency concrete two-dimensional aggregates—the remaining space method, in particular to the generation and processing of polygonal aggregates, circular aggregates, elliptical aggregates, oval aggregates, and recycled aggregates. delivery method. [0002] technical background [0003] Concrete is a heterogeneous three-phase composite material composed of aggregate, mortar and the interface zone between them. The various mechanisms of concrete behavior are intricate and interdependent. It is difficult to study them only through experiments. Simulation analysis is a supplementary means of experiment and theoretical research, and the premise and basis of concrete mesoscopic simulation analysis is to establish a mesoscopic model close to real concrete, and the particle size and slenderness ratio of individual aggregates in the mesoscopic model can reflect Parameters such as gradat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F119/02
CPCG06F30/23G06F2119/02
Inventor 应敬伟简榆峻
Owner GUANGXI UNIV
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