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动力参数和岩石特性对ODC基于离散元素方法的切割过程的影响
Xuefeng Li1,2, Shibo Wang3, Qingfeng Meng4
1Industrial Perception and Intelligent Manufacturing Equipment Engineering Research Center of Jiangsu Province, Nanjing Vocational University of Industry Technology, Nanjing, 210023, China. leexf2009@163.com.
Scientific reports
|April 26, 2025
概括
这项研究分析了使用离散元件建模的振荡盘切割器 (ODC) 性能. 增加的几何和运动参数增加了切削力和能源消耗,影响了岩石断裂模式.
科学领域:
- 岩石机械 岩石机械 岩石机械
- 机械工程 机械工程 机械工程
- 计算建模计算建模
背景情况:
- 振荡盘切割机 (ODC) 在岩石挖掘中至关重要.
- 了解ODC切割机制对于优化性能至关重要.
- 离散元件方法 (DEM) 为模拟复杂的岩石切割过程提供了一个强大的工具.
研究的目的:
- 为了研究动力学参数和岩石特性对ODC切割性能的影响.
- 分析几何 (异心比,RE) 和运动 (速度比,RV) 参数对切削力,扭矩和特定能量 (SE) 的影响.
- 为了检查切割深度,岩石断裂模式和切割效率之间的关系.
主要方法:
- 开发并验证了一个ODC切割模型,使用三维粒子流代码 (PFC3D).
- 进行模拟分析,以评估各种参数对切割特性的影响.
- 采用多变量回归来建立与岩石特性,切割深度和SE相关的方程.
主要成果:
- 切割力,扭矩和SE随着较高的RE和RV而增加.
- 切割力和扭矩与切割深度呈现正线性相关性.
- 特定能量 (SE) 与切割深度有负相关,岩石断裂从塑料转变为脆弱的深度越来越大.
- 峰值切割力发生在裂开始时,并在传播过程中减少.
结论:
- 动力学参数和岩石特性显著影响ODC切割性能.
- 结果为优化ODC设计和操作参数提供了理论基础.
- 这项研究增强了对ODC切割机制的理解,用于实际应用.
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