Method for establishing multi-scale model of medicament particles during powder compaction process of long thin metal pipe

A technology of model building and metal tubes, which is applied in the fields of instruments, calculations, and electrical digital data processing, can solve the problems of low production efficiency, multi-scale modeling of pharmaceutical particles, high labor intensity, etc., and achieve the effect of improving efficiency

Inactive Publication Date: 2014-07-30
CHONGQING UNIV
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  • Claims
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Problems solved by technology

At present, my country's pyrotechnic products still adopt the manual production mode of single mode and single shot. In this production mode, there are the following problems: (1) poor product consistency; (2) high labor intensity and low production efficiency; (3) Health and safety hazards t

Method used

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  • Method for establishing multi-scale model of medicament particles during powder compaction process of long thin metal pipe
  • Method for establishing multi-scale model of medicament particles during powder compaction process of long thin metal pipe
  • Method for establishing multi-scale model of medicament particles during powder compaction process of long thin metal pipe

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Experimental program
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Effect test

Embodiment 1

[0114] Step 1: Establishment of the slender metal tube model

[0115] Establish a hollow cylindrical wall to simulate a slender metal pipe, set the effective side of the cylindrical wall to point to the inner wall of the cylindrical wall, and the ID number of the inner wall is 1; establish a bottom wall at the bottom of the cylindrical wall The plug is simulated, and the effective side of the bottom wall is set as the upper surface, and the ID number of the upper surface wall is 2; the slender metal tube is easy to deform, so its stiffness setting order of magnitude is lower than that of the ground infinite plane. A slender metal tube model such as image 3 As shown, its specific parameters are as follows:

[0116] The height of the cylindrical wall is H_cylinder=0.5m;

[0117] The radius of the bottom surface of the cylindrical wall is rad=0.05m;

[0118] Step 2: Establishment of drug particle feeding model

[0119] Establish a funnel-shaped wall to simulate the feeding m...

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Abstract

The invention discloses a method for establishing a multi-scale model of medicament particles during a powder compaction process of a long thin metal pipe, and belongs to the field of computer simulation analysis. The method specifically comprises the following steps of (1) establishing a long thin metal pipe model; (2) establishing a medicament particle adding model; (3) establishing a medicament particle model; (4) establishing a long thin metal pipe compaction action model; (5) carrying out compaction simulation by utilizing discrete meta models which are established from the step (1) to the step (4). According to the method for establishing the multi-scale model of the medicament particles during the powder compaction process of the long thin metal pipe, disclosed by the invention, through establishing a multi-scale compaction model of the powder particle, the movement of the medicament particles at the inner part of the long thin metal pipe and a density changing process of the medicament particles in a compaction action are simulated by utilizing a computer, and a feasible theory basis is provided for a compaction technology of a compaction device based on impact vibration.

Description

technical field [0001] The invention relates to the field of computer simulation analysis, in particular to a method for establishing a multi-scale model of medicament particles in the powder compaction process of a slender metal tube. Background technique [0002] The compaction of powder particles in long and thin metal tubes is a difficult point in the production of pyrotechnic charges. Because pyrotechnics have high requirements on the density and uniformity of the medicament particles in the slender metal tube, the tamping density of the slender metal tube medicament particles has become a key factor affecting the quality of the pyrotechnic product. At present, my country's pyrotechnic products still adopt the manual production mode of single mode and single shot. In this production mode, there are the following problems: (1) poor product consistency; (2) high labor intensity and low production efficiency; (3) Health and safety hazards to operators. In view of these pr...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 林景栋林湛丁林秋阳王珺珩邱欣谢杨徐春慧游佳川
Owner CHONGQING UNIV
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