单颗金刚石磨削花岗石中力的离散单元分析及试验验证

• 作 者: 叶勇 徐西鹏
• 机 构: 华侨大学石材加工重点实验室,
• 出 处: 摩擦学学报
• 发表日期: 2009年03期
• 关键词: 离散单元 金刚石 花岗石 磨粒 单颗磨粒磨削 磨削力 切向力 法向力 切削厚度 数字模型

对花岗石进行了单颗粒金刚石磨削试验.通过测量磨削力对单颗金刚石磨粒所承受的平均法向力和切向力进行了研究,讨论了主轴转速和单颗磨粒最大切削厚度与磨削力的关系.利用离散单元方法(DEM)构造了2种不同的花岗石数字模型,在此基础上对单颗磨粒磨削进行了模拟分析,分析结果与试验结果基本吻合.

Single granite diamond grinding test was carried out on granite.The average normal force and tangential force on the single diamond abrasive were measured by measuring the grinding force.The maximum rotation speed of the spindle and the maximum cutting of single abrasive grain The relationship between the thickness and the grinding force.The two different granite digital models were constructed by using the discrete element method (DEM), on the basis of which the single abrasive grinding was simulated and the results were in good agreement with the experimental results .