A 3D finite element modeling and simulation method for random particle size distribution in powder metallurgy

A technology of powder metallurgy and simulation method, applied in the direction of design optimization/simulation, special data processing applications, etc., can solve problems such as modeling and simulation, and achieve the effect of accurate model, convenient analysis process, and simple modeling process

Active Publication Date: 2020-09-25
GUILIN GUIBEI MACHINE
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide a powder metallurgy random particle size distribution 3D finite element modeling and simulation method, which solves the difficulty of modeling and simulation during the production process of powder metallurgy sintering Difficulties

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  • A 3D finite element modeling and simulation method for random particle size distribution in powder metallurgy
  • A 3D finite element modeling and simulation method for random particle size distribution in powder metallurgy
  • A 3D finite element modeling and simulation method for random particle size distribution in powder metallurgy

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Embodiment Construction

[0033] The implementation of the method of the present invention will be described in detail below in conjunction with the accompanying drawings. The flow chart of the method is as figure 1 shown.

[0034] The present invention is a powder metallurgy random particle size distribution 3D finite element modeling and simulation method, the specific implementation of the method is as follows:

[0035] Step 1: According to the composition formula of powder metallurgy, its component composition is obtained, including: the maximum and minimum particle size of each component, component material, component density, elastic modulus, plasticizer density, plasticizer elasticity modulus etc. Here, the maximum particle size of the component is set as: D max , the minimum particle size is: D min .

[0036] Step 2: According to the average density calculation formula, the average density ρ of the material particles is calculated by inserting the density and content of different component...

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Abstract

The invention discloses a powder metallurgy random particle size distribution 3D (three-dimensional) finite element modeling and simulation method which includes the steps: firstly, acquiring the content and the particle size range of all components according to a powder metallurgy formula, calculating the average density of material particles according to the density and the content of different components, and acquiring the sizes and the number of the particles under a particle size belt; secondly, throwing the particles by PFC3D software, discretizing a random model and deriving throwing coordinates and particle sizes; thirdly, leading the coordinates and the particle sizes into ANSYS software and building a random 3D finite element model; fourthly, leading the finite element model into Hypermesh, dividing grids and finally loading a solver for finite element simulation to simulate the random model of a powder metallurgy random particle size distribution process. Main parameters include maximum particle size and minimum particle sizes. By making full use of randomization of discrete elements and strong analysis functions of finite elements, the model is visual, simple and high in practicability and conforms to application and research of present powder metallurgy in terms of sinter molding.

Description

technical field [0001] The invention belongs to the technical field of powder metallurgy simulation manufacturing, and relates to a powder metallurgy random particle size distribution 3D finite element modeling and simulation method. Background technique [0002] Powder metallurgy is an industrial technology for producing metal powder or using metal powder (or a mixture of metal powder and non-metal powder) as raw material, after pressing and sintering, to produce metal materials, composite materials and various types of products. At present, powder metallurgy technology has been widely used in transportation, machinery, electronics, aerospace, weapons, biology, new energy, information and nuclear industries, and has become one of the most dynamic branches of new material science. Powder metallurgy technology has a series of advantages such as significant energy saving, material saving, excellent performance, high product precision and good stability, and is very suitable fo...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23
CPCG06F30/23
Inventor 王延忠郭超贾树王
Owner GUILIN GUIBEI MACHINE
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