Simulation analysis of damage and energy consumption of rocks during abrasive water jet impacts based on SPH-FDEM method

被引：0

作者：

Hu, Yisheng ^{[1
,2
]}

Wang, Fuzeng ^{[1
,2
]}

Jiang, Feng ^{[1
,2
]}

Hu, Lingbao ^{[1
,2
]}

Huang, Guoqin ^{[1
]}

机构：

[1] Huaqiao Univ, Inst Mfg Engn, Xiamen 361021, Fujian, Peoples R China

[2] NanAnhqu Inst Stone Ind Innovat Technol, Quanzhou 362261, Peoples R China

来源：

POWDER TECHNOLOGY | 2025年 / 449卷

基金：

中国国家自然科学基金;

关键词：

SPH-FDEM; Abrasive water jet; Rock damage; Energy consumption; NUMERICAL-SIMULATION; BREAKING; FIELD; PICK;

D O I：

10.1016/j.powtec.2024.120418

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This study established a simulation model for abrasive water jet rock breaking based on the SPH-FDEM method. The effects of abrasive concentration and jet velocity on crack and energy consumption were investigated based on the model. The effect of finite and infinite element boundaries on simulation results was compared, and it was found that the infinite element boundary can mitigate the damage caused by stress wave reflection on rocks. During water jet rock breaking, the crack mode inside the rock was dominated by Mode-I crack (opening-mode crack) due to the water wedge effect, and the number of cracks and the broken volume increased with increasing velocity and abrasive concentration. In this study, the specific energy consumption (SEC) was used to evaluated the rock-breaking capacity. Under pure water jetting, the SEC decreased with increasing velocity, while with the addition of abrasive, the SEC increased with increasing velocity and abrasive concentration. These findings provided a basis for optimization of water jet machining parameters in engineering applications.

引用

页数：13