生物矿含量对花岩机械反应的影响使用一种新的三维基于谷物的模型和力链分析
Peigang Geng1, Fangbin Zhao2, Wei Li3,4
1School of Transportation Engineering, Jiangsu Vocational Institute of Architectural Technology, Xuzhou, Jiangsu 221100, China.
ACS omega
|March 4, 2024
概括
在花岩中较高的生物含量削弱了其承载能力. 这项研究使用离散元素模型来分析矿物成分如何影响花岩.
科学领域:
- 地质技术工程 地质技术工程
- 材料科学 材料科学 材料科学
- 计算力学 计算力学 计算力学
背景情况:
- 由于其异质矿物成分,花岩的机械行为是复杂的.
- 了解矿物质含量的影响对于岩石力学和工程应用至关重要.
- 离散元素方法 (DEM) 为模拟颗粒材料提供了一个强大的工具.
研究的目的:
- 通过使用3D DEM模型,研究生物含量对花岩机械性能的影响.
- 分析矿物成分,力链网络和断裂阻力之间的关系.
- 用实验室的单轴压缩测试来验证数值发现.
主要方法:
- 开发一个基于3D颗粒的离散元素模型,用于花岩.
- 构建具有不同生物 (VB) 含量的花岩标本.
- 单轴压缩测试和分析力链网络和断裂模式.
主要成果:
- 增加的生物含量与花岩的承载能力相反相关.
- 较高的VB导致生物结构内的接触和力链密度增加.
- 总体力链值随着VB的上升而下降; 内粒体结构显示出更高的断裂阻力.
结论:
- 生物含量显著影响花岩的机械反应和结构完整性.
- 力量链网络分析为应力分布和故障机制提供了洞察力.
- 颗粒内部组件与颗粒内部组件相比,具有更强的抗裂能力.
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