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Performance Analysis of Ball Mill Liner Based on DEM-FEM Coupling

机译：基于DEM-FEM耦合的球磨机衬板性能分析

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摘要

In the paper, based on the finite element-discrete element method coupling and the coupled bionics theory, four lifting bar models with coupled bionic surface structures, such as smooth, transverse stripe, longitudinal stripe and convex hull, are established. The particle model with different geometric features is established and the coupled simulations using finite element-discrete element method are carried out. Results show that the lift bar with the coupled bionic structure with soft matrix-hard bearing unit can effectively reduce the equivalent stress of the lifting bar during grinding. This coupled bionic structure can also reduce wear and tear of the lifting bar, and therefore, the lifting bar is protected and the grinding effect is improved. Results also indicate that the transverse stripe-coupled bionic structure has the best wear resistance and grinding effect comparing among the four kinds of lifting bars.
机译：本文基于有限元-离散元方法耦合和耦合仿生学理论，建立了具有仿生表面耦合结构的四个起重杆模型，如光滑，横向条纹，纵向条纹和凸壳。建立了具有不同几何特征的粒子模型，并采用有限元-离散元方法进行了耦合模拟。结果表明，具有软基质-硬轴承单元的仿生结构耦合的举升杆可以有效地减小举升杆在磨削过程中的等效应力。这种耦合的仿生结构还可以减少提升杆的磨损，因此，保护​​了提升杆并且改善了磨削效果。结果还表明，与四种起重杆相比，横条耦合仿生结构具有最佳的耐磨性和磨削效果。

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