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Method and system for forming computerized models comprising polydisperse spherical particles packed in arbitrarily shaped volumes

A technology of spherical particles and arbitrary shapes, applied in the field of computerized model formation, can solve the problems of lack of packing density and slowness of geometric methods

Active Publication Date: 2017-05-03
LIVERMORE SOFTWARE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, geometric methods lack packing density, sedimentation methods require a priori the direction of sedimentation (which does not exist for arbitrarily shaped volumes), and dynamical methods (similar to molecular dynamics) are very slow due to heavy computational requirements

Method used

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  • Method and system for forming computerized models comprising polydisperse spherical particles packed in arbitrarily shaped volumes
  • Method and system for forming computerized models comprising polydisperse spherical particles packed in arbitrarily shaped volumes
  • Method and system for forming computerized models comprising polydisperse spherical particles packed in arbitrarily shaped volumes

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Embodiment Construction

[0028] figure 1 Is a flowchart illustrating an exemplary process 100 for forming a computerized model comprising a plurality of polydisperse spherical particles packed in an arbitrarily shaped volume according to an embodiment of the present invention. Process 100 is implemented in software and is better understood with reference to the other figures.

[0029] Process 100 begins with a computer system (e.g., Figure 11 The computer system 1100) begins by receiving a definition of an arbitrarily shaped volume and a characteristic profile of polydisperse spherical particles in step 102 .

[0030] One illustrative definition of an arbitrarily shaped volume is a CAE network model containing polygons (eg, triangles, quadrilaterals, pentagons, etc.) representing the boundaries of the volume. Each polygon is configured to contain a directional property indicating which side of the polygon is inside or outside the volume. This can be done by a number of known methods. An illustrat...

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Abstract

Systems and methods for creating a computerized model containing polydisperse spherical particles packed in an arbitrarily-shaped volume are disclosed. To create the computerized model, a plurality of polydisperse spherical particles having statistical properties according the characteristic profile (e.g., minimum and maximum sizes and size distribution) is generated. First portion of the particles is used for forming a border layer within the volume's boundary. Any hole in the border layer is sealed with one or more null-sized particles. Second portion of the particles is used for filling up an interior space in a layer-to-layer scheme from the border layer inwards. The layer-to-layer scheme includes searching a best suitable location from a list of size-ranked candidate locations using power diagrams. Each of the second portion of the particles is allowed to pass through holes in the current layer towards the border layer when possible.

Description

technical field [0001] The present invention relates generally to the formation of a computerized model in computer-aided engineering analysis for use in numerical models of products, and more particularly to a method for forming polydisperse spheres representing packing in arbitrarily shaped volumes Methods and systems for computerized modeling of particles. Background technique [0002] Many modern engineering analyzes are performed with the assistance of computer systems. One such computer-aided engineering (CAE) analysis is known as the discrete element method (DEM), which is commonly used to numerically simulate the motion of large numbers of particles. With advances in computing power and numerical algorithms for nearest neighbor classification, it has become possible to simulate tens of thousands of particles numerically. Today, DEM is widely accepted as an effective method for solving engineering problems in granular and discontinuous materials, especially in parti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/20G06F2111/10G16C10/00
Inventor 韩志东
Owner LIVERMORE SOFTWARE TECH