Target grading model creation method for determining particle diameter based on continuous uniform probability

A technology of target gradation and particle size, applied in particle and sedimentation analysis, particle size analysis, instruments, etc., can solve the problems of high implementation difficulty and inconsistent with the continuity law of the actual transient filling process.

Active Publication Date: 2019-09-17
孙伟宸
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Problems solved by technology

The current transient filling method needs to strictly control the particles in each static delivery stage to meet the targe

Method used

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  • Target grading model creation method for determining particle diameter based on continuous uniform probability
  • Target grading model creation method for determining particle diameter based on continuous uniform probability
  • Target grading model creation method for determining particle diameter based on continuous uniform probability

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Embodiment Construction

[0064] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0065] The present invention designs a method for creating a target gradation model based on continuous uniform probability to determine the particle size, which is used to realize the delivery of particles to the target space. In practical applications, the target space can be divided into two-dimensional areas and three-dimensional areas. There are two types of regions, and then the methods are executed separately for these two types of target spaces.

[0066] One is the two-dimensional area target space, such as figure 1 and Figure 2a As shown, the specific steps are as follows.

[0067] Step A. Obtain the particle grading curve corresponding to the particle type, and as Figure 3a As shown, according to the area size percentage of cumulative particles in the particle grading curve The relationship with the chan...

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Abstract

The invention relates to a target grading model creation method for determining a particle diameter based on continuous uniform probability. The target grading model creation method comprises the following steps: introducing the continuous uniform probability, and selecting a particle diameter within all particle diameter interval ranges to put particles according to the change relationship of the accumulated particle number percentage along with particle diameter intervals. for the target grading model creation method, compared with an existing static release method, the maximum filling rate of the model can be greatly improved; and compared with a current transient filling method, the correlation of the position distribution rule and the putting sequence of the particles in each distribution interval in the target putting space can be avoided, and the positions of the particles in the distribution intervals in the target throwing space are guaranteed to conform to the target distribution rule, and the particle diameter can continuously meet the target grading distribution in the whole throwing process, and the continuity of the transient filling process is guaranteed.

Description

technical field [0001] The invention relates to a method for creating a target gradation model for determining particle sizes based on continuous uniform probability, and belongs to the technical field of numerical simulation of geotechnical engineering and material science. Background technique [0002] Particle gradation is an important indicator to determine material properties. With the finite element method (FEM), finite difference method (FDM), discrete element method (DEM), finite element discrete element coupling method (FDEM), numerical manifold method (NMM ), Discontinuous Deformation Analysis (DDA), Material Point Method (MPM), Lattice Boltzmann Method (LBM), Smoothed Particle Dynamics (SPH), Peridynamics (PD) and other numerical simulation techniques in rock and soil With the popularization and application in the fields of engineering and materials science, how to create a numerical model that satisfies the target gradation distribution to represent the real mate...

Claims

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Application Information

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IPC IPC(8): G06F17/50G01N15/02
CPCG01N15/02G06F30/20
Inventor 孙伟宸吴恺
Owner 孙伟宸
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