A method for simulating rock bridge penetration based on batch insertion of cohesive elements

A cohesive, batch technology, applied in design optimization/simulation, special data processing applications, etc., can solve problems such as inability to do it, and achieve the effect of fast running speed, convenient operation and easy implementation.

Active Publication Date: 2022-06-28
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing commercial Abaqus software modules are not yet able to insert cohesion elements in batches in areas where rock bridges may penetrate

Method used

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  • A method for simulating rock bridge penetration based on batch insertion of cohesive elements
  • A method for simulating rock bridge penetration based on batch insertion of cohesive elements
  • A method for simulating rock bridge penetration based on batch insertion of cohesive elements

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Experimental program
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Embodiment Construction

[0018] Attached below Figure 1-7 The implementation of the present invention is described in detail.

[0019] A method for simulating rock bridge penetration based on batch insertion of cohesive force elements, comprising the following steps:

[0020] 1. Establish a rock mass model including rock bridges;

[0021] In the Abaqus-Part module, establish and name the rock mass model including the rock bridge; in the Abaqus-Property module, establish two material properties for the rock mass and the cohesive force element to be inserted; in the Abaqus-Assembly module, follow the Assemble the rock mass and the rock block at the coordinate position; divide the rock mass model into a mesh in the Abaqus-Mesh module, and set a set name for the rock block at the same time;

[0022] 2. Open the GUI interface plug-in based on Abaqus-Python language, and according to the prompts of the plug-in interface, select the material and the collection area to be inserted to form a rock mass rock ...

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Abstract

The invention discloses a method for simulating the penetration of rock bridges based on batch insertion of cohesive force units. After the rock mass model including the rock bridge is established and assembled in the finite element software Abaqus (Assembly), the possible penetration of the rock bridge is made by using the GUI interface plug-in The cohesion elements are inserted in batches in the area, and the self-compiled damage model is imported to realize the finite element simulation calculation of rock bridge penetration. The present invention utilizes the GUI interface plug-in written in Abaqus—Python language, and can directly perform interface operations in the Abaqus software and insert cohesion units in batches. The self-compiled damage model conforms to the experimental results, thus significantly improving the path accuracy of the rock bridge penetration.

Description

technical field [0001] The invention belongs to the field of finite elements for simulating the penetration of rock bridges existing in natural rock masses, in particular to an operation method of a GUI interface plug-in for batch inserting cohesive force units based on the finite element software Abaqus platform. The USDFLD subroutine interface of the interface, import the damage model compiled by Fortran language, and then simulate the method of rock bridge penetration. Background technique [0002] At present, the cohesion element is widely used as a computational model for fracture and damage failure in elastoplastic mechanics. The cohesive force model avoids the stress singularity at the crack tip in linear elastic fracture mechanics, and calculates the stress and fracture energy during the cracking process. [0003] At present, the cohesion element based on the cohesion model has been embedded in the Abaqus commercial finite element software. In the CAE software of Ab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23
CPCG06F30/23
Inventor 章杨松骆健
Owner NANJING UNIV OF SCI & TECH
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