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Numerical value sample simulation method based on PFC (Particle Flow Code) method

A simulation method, particle flow technology, applied in electrical digital data processing, special data processing applications, instruments, etc., to simplify analysis steps and save time

Inactive Publication Date: 2015-04-08
GUANGXI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

Numerical sample simulation using the particle flow method, which is rarely attempted by people

Method used

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  • Numerical value sample simulation method based on PFC (Particle Flow Code) method

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Embodiment Construction

[0015] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] see figure 1 , a preferred embodiment of the present invention provides a numerical sample simulation method based on the particle flow method, comprising the following steps:

[0017] (1) Define the simulated object

[0018] The detailed level of the defined model is determined by the simulation intention. The most basic purpose of the defined model is to be able to reflect the mechanism to be explained. The characteristics that have a greater impact on the simulated problem should be considered, while the characteristics that have little impact can be ignored. Determine the geometric dimensions of the sample; specify the loading method of the original test; obtain the macroscopic parameters of the original test, including E, c, f i , peak strength, residual strength.

[0019] (2) Basic concepts of mechanical model establishment

[0020] Es...

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Abstract

The invention discloses a numerical value sample simulation method based on a PFC (Particle Flow Code) method. The numerical value sample simulation method comprises the steps of a, defining a simulation object, determining geometric dimension of a sample and a loading mode of an original experiment, and obtaining macro parameters of the original experiment; b, establishing characteristics of a mechanical model, and determining sample parameters of the mechanical model; c, constructing and operating a simplified model; d, generating a PFC sample, sequentially generating a wall body and small-radius particles, enlarging the radius of the particles, carrying out automatic balance on a sample, and applying ambient pressure; e, operating a computing model, and connecting all data files to compute when the computing model is determined to operate correctly through a checking model; moving the wall body, calling a servo program, and computing and recording data. Through the numerical value sample simulation method disclosed by the invention, a microscopic action mechanism of a soil body can be well simulated, more scientific and more effective data can be obtained, analysis steps can be simplified, and the time is saved.

Description

technical field [0001] The invention relates to the technical field of geotechnical analysis, in particular to a numerical sample simulation method based on a particle flow method. Background technique [0002] The interaction mechanism between geosynthetics and soil directly determines the quality of reinforced soil engineering. Studying the interaction characteristics of reinforced soil interface under dynamic load can reveal more deeply the reinforcement mechanism of many actual reinforcement projects. However, the current research basically discusses the mechanical properties of the reinforcement-soil interface under dynamic load through indoor experiments, and the finite element method based on continuum mechanics can only analyze its macroscopic characteristics when numerically simulating the characteristics of the reinforcement-soil interface. . The numerical simulation method of particle discrete element method can obtain the change law of soil mesoscopic fabric par...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 王家全王宇帆
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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