相关实验视频

Updated: Jul 29, 2026

$Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction$

Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction

Published on: May 20, 2018

基于数字图像技术和离散元素方法的层状页岩压缩行为的数值模拟

Zidong Wang¹, Xiaoxuan Ding¹, Jianlin Liu²

¹College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao, 266580, China.

Scientific reports

|July 10, 2024

概括

这项研究使用粒子流代码 (PFC2D) 来研究页岩的机械异构性. 微观结构和分层显著影响硬度,强度和故障模式,这对于理解非传统的水库岩石至关重要.

科学领域:

地质技术工程地质技术工程
计算力学计算力学计算力学
材料科学材料科学材料科学

背景情况:

页岩表现出复杂的机械性能,包括性和强度异构性,这是由于其多层次的微观结构.
了解这些特性对于非传统的水库勘探和开发至关重要.

研究的目的:

为了研究由微观结构引起的页岩机械性质的异构性.
通过使用数值模拟来探索刚性,强度,故障模式和微裂变演变.
分析微观结构参数和限制压力对分层页岩行为的影响.

主要方法:

在数值模拟中使用二维粒子流代码 (PFC2D).
使用计算机断层扫描 (CT) 图像和矿物质分析来实现现实的微观结构和参数校准.
对微观参数和微观结构特征进行灵敏度分析.
将数值模拟结果与实验数据进行比较.

主要成果:

微观参数显著影响宏观性质,取决于分层角度和面部类型.
微结构和初始裂极大地影响了层状页岩样本的机械行为.
限制压力显然会影响层状页岩的机械性能.

结论:

采用现实微结构和校准参数的PFC2D方法,有效地探测了层状岩石的机械行为.
这种方法在地力学研究中为微尺度建模和参数校准提供了潜力.
这些发现为页岩的异构机械反应提供了洞察力,这与水库工程有关.

关键词:

数字核心数字核心数字核心离散元件方法的离散元素方法.层状页岩是一种层状页岩.微观的分层结构微观的分层结构平行结合模型的平行结合模型.

更多相关视频

Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid

Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid

Published on: December 2, 2022

Finite Element Modeling for the Simulation of the Quasi-Static Compression of Corrugated Tapered Tubes

Finite Element Modeling for the Simulation of the Quasi-Static Compression of Corrugated Tapered Tubes

Published on: January 6, 2023

相关概念视频

Typical Model Studies

Typical Model Studies

Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.