High-efficiency rock-soil body discrete element value calculation particle searching and operation method

A numerical computing, discrete element technology, applied in computing, electrical digital data processing, special data processing applications, etc., can solve the problems of low computing efficiency and large amount of computation, reduce the operating frequency, improve the speed, and speed up the iterative computing efficiency. Effect

Active Publication Date: 2014-12-24
NANJING UNIV
View PDF2 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem of large amount of calculation and low calcula

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-efficiency rock-soil body discrete element value calculation particle searching and operation method
  • High-efficiency rock-soil body discrete element value calculation particle searching and operation method
  • High-efficiency rock-soil body discrete element value calculation particle searching and operation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] figure 1 The overall structure and working principle of this method is characterized by applying the window method to obtain the optimal adjacent particle matrix, and controlling the operation of the window search algorithm through the displacement matrix.

[0039] Step 10 constructs the initial particle discrete element accumulation model, the total number of particles is m, and the particles are numbered continuously from 1 to m.

[0040] Step 11 obtains preliminary neighboring particles through space grid division calculation. Correspondingly attached figure 1 a is a schematic diagram of the grid in two dimensions, and the side length of the grid unit is W g , all particles are included in the mesh. With the dark particle P0 as the central particle, the black dotted line range is the adjacent grid, and the gray particles are the preliminary adjacent particles of P0, a total of 11.

[0041] Step 12 determines the optimal neighboring particles by establishing a par...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a high-efficiency rock-soil body discrete element value calculation particle searching and operation method. The method comprises the following steps that optimum neighboring particles are searched on the basis of drawn space lattices and particle windows, and the searching algorithm operation is controlled and reduced through the accumulation particle displacement. For non-fluid value simulation such as rock-soil bodies, a displacement matrix control window searching algorithm is used, the searching algorithm generally needs to be operated once for tens of thousands of times of iteration, the speed of a discrete element value method is obviously accelerated, and the dynamic simulation of a rock-soil body large-scale particle system can be realized.

Description

technical field [0001] The invention relates to discrete element numerical simulation of rock and soil, in particular to a high-efficiency calculation method based on window search and particle displacement control. Background technique [0002] Discrete element method is a main numerical simulation method to solve the problem of discontinuity of rock mass. It can dynamically simulate large deformation and fracture damage of rock mass. Stable deformation mechanism of high slope, surrounding rock failure of deep underground engineering, mine caving mining, etc. Discrete elements decompose the model in space and perform iterative calculations in time, and the calculation amount is very huge. Discrete element calculation mainly includes two parts: searching the neighboring contact particles of each particle and iterative calculation of particle motion. Among them, the particle search calculation needs to find out the particles in contact with the current particle from the par...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F17/30
CPCG16Z99/00
Inventor 刘春施斌王宝军张丹索文斌梁修雨张驰
Owner NANJING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap