Large-scale granular material internal stress and crushing simulation analysis method and device

An internal stress, granular material technology, applied in special data processing applications, instruments, complex mathematical operations, etc., can solve problems such as difficult alignment, and achieve the effect of ensuring safety and reliability

Active Publication Date: 2022-04-01
WUHAN UNIV
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Problems solved by technology

Also, the alignment of points in complex domains may not be easy, especially for 3D problems

Method used

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  • Large-scale granular material internal stress and crushing simulation analysis method and device
  • Large-scale granular material internal stress and crushing simulation analysis method and device
  • Large-scale granular material internal stress and crushing simulation analysis method and device

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0040] The invention combines the boundary element method and the discrete element method to conduct large-scale particle crushing research, can use the boundary element method to calculate and analyze the internal stress of particles, and combines the fracture theory of continuum mechanics and Hawke-Brown criterion to judge whether the particles are broken. In addition, when using boundary elem...

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Abstract

The invention discloses a large-scale particle material internal stress and crushing simulation analysis method and device, which belong to the technical field of particle crushing. Based on the basic idea of ​​continuous discrete coupling, the invention combines the boundary element method and discrete element method to carry out large-scale particle crushing research , can use the boundary element method to calculate and analyze the internal stress of the particles, and combine the fracture theory of continuum mechanics, and the Hawke-Brown criterion to judge whether the particles are broken. In addition, when using boundary elements for internal stress simulation, for particle aggregates with similar shapes, such as round particles, the present invention only needs to calculate the coefficient matrix of one particle, and other similar particles obtain the coefficient matrix through coordinate conversion and coefficient scaling. The calculation efficiency is greatly improved. The invention also simulates the internal stress of the circular rockfill material and proves its effectiveness.

Description

technical field [0001] The invention belongs to the technical field of particle crushing, and more specifically relates to a large-scale particle material internal stress and crushing simulation analysis method and device. Background technique [0002] As an important building material, granular materials are widely used in engineering. For example, the main filling material of rockfill dams is rockfill, and sand and gravel materials are common in industrial and civil construction projects. Due to the action of external force, the interior of the granular material is often in a state of high stress, which leads to the breakage of the particles, which in turn changes the gradation of the particle aggregates and affects the macroscopic and microscopic mechanical properties of the particle aggregates. Therefore, it is necessary to study the mechanical mechanism of particle breakage. However, affected by the size and position of granular materials, physical experiments are diff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/25G06F17/16G06F17/11G06F119/14
CPCG06F30/25G06F30/20G06F17/16G06F17/11G06F2119/14
Inventor 王桥刘彪周伟岳强黄诚斌马刚姬翔田文祥黄康桥刘摇张思凡
Owner WUHAN UNIV
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