基于离散元的玻璃切割塌边现象仿真研究

Research on Numerical Investigation of Collapse Behavior of Glass Cutting-Separating based on 3D Discrete Element

玻璃切割产生的塌边破坏问题是玻璃在切割后分离过程中出现的一个实际问题,它的本质是玻璃材料由连续体向非连续体转变的一个极其复杂的力学过程。阐述了基于圆球单元的三维离散元原理,建立了基于球体单元的玻璃切割塌边的三维离散元模型,应用离散元法仿真分析了玻璃切割塌边全过程。通过仿真试验比较不同金刚石划痕深度对塌边量的影响,结果在定性上符合预期现象,从而进一步说明了离散元的方法对于该现象仿真评价的有效性。

The collapse behavior of glass cutting,a practical phenomenon while glass is processed,is a complex mechanical issue because of the transforming of material phases from continuum to non-continuum.In this paper,the principle of 3D discrete element method with the application on sphere elements was discussed.And then the discrete element model regarding glass cutting was established with sphere elements.Through the numerical experiments,the whole glass cutting phenomena were simulated.Moreover,the effectiveness of discrete element method to simulate glass cutting was further verified by a comparison of the numerical results with different depth of scribing caused by the diamond blade.