基于使用DEM-CFD方法进行维度分析的线性模具填充的建模
Jie Li1,2, Sunsheng Zhou1,2, Shiyan Yan1,2
1Institute of Manufacturing Engineering, Huaqiao University, Xiamen 361021, China.
Materials (Basel, Switzerland)
|July 30, 2025
概括
这项研究引入了用于粉末模具填充的新模型,使用维度分析和模拟. 该模型有助于预测填充比率,并根据材料特性和操作参数优化模具设计.
科学领域:
- 粉末技术技术 粉末技术
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
背景情况:
- 线性模具填充是一个关键的工业过程.
- 现有的模型缺乏粉末流动的全面性和系统性描述.
研究的目的:
- 开发一种用于粉末模具填充的系统模型.
- 用维度分析分析影响粉末流动特征的因素.
主要方法:
- 使用离散元件方法 (DEM) 和计算流体动力学 (CFD) 模拟.
- 应用了维度分析和Pi定理来推导无维参数.
- 开发了一种线性模具填充的半经验模型.
主要成果:
- 确定了关键的无维参数:粒子大小与压缩深度比,固体密度数,鞋子速度数和力数.
- 填充比率随着颗粒大小的增加而增加,死亡深度比率和固体密度数.
- 由于填充时间缩短,填充比率随着鞋子速度数的增加而降低.
结论:
- 为线性模具填充建立了一个新的半经验模型.
- 该模型可以计算最小的鞋子速度和模具尺寸设计.
- 提供了一种基于材料特性优化模具填充的方法.
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