摘要
为了模拟单颗粒金刚石磨削碳化硅陶瓷的加工过程,采用控制单一变量的方法,设置同一条件下不同工件进给速度的工艺参数,用Johnson-Holmquist ceramic本构关系建立有限元模型,仿真分析不同工件进给速度下单粒金刚石磨削碳化硅陶瓷的磨削力、磨削表面应力、磨削表面形貌和裂纹损伤.仿真模型数据与已有相同工况下的单粒金刚石磨削碳化硅陶瓷实验值吻合度较高,所提出的数值模型为金刚石砂轮设计、预测陶瓷磨削的磨削力、切屑去除和观察划痕形貌提供了高效的方法和理论依据.
In order to clearly simulate the grinding process of single-particle diamond on silicon carbide ceramics,by using the single-variable-control method,which sets the process parameters of feeding speed for different workpieces under the same condition,a finite element model based on Johnson-Holmquist ceramic constitutive relationship was established to simulate and analyze grinding force,surface stress,surface morphology and crack damage of single-particle diamond grinding on silicon carbide ceramics under different workpiece feeding speeds.The simulation model data are in good agreement with the experimental values of single-particle diamond grinding on silicon carbide ceramics under the same working conditions.The as-proposed numerical model provides efficient method and theoretical basis for the design of diamond grinding wheel,the prediction of grinding force,the removal of cutting chip and the observation scratch morphology.
作者
陈长征
吴焕杰
李
王洁
崔诚
CHEN Chang-zheng;WU Huan-jie;LI Ying;WANG Jie;CUI Cheng(School of Mechanical Engineering,Shenyang University of Technology,Shenyang 110870,China;School of Mechanical Engineering,Liaoning University of Science and Technology,Benxi 117004,China)
出处
《沈阳工业大学学报》
CAS
北大核心
2022年第2期180-184,共5页
Journal of Shenyang University of Technology
基金
辽宁省教育厅青年育苗项目(LQGD2019007).
关键词
单颗磨粒
碳化硅陶瓷
有限元仿真
磨削力
工件表面应力
工件进给速度
JH-2本构模型
single-particle abrasive
silicon carbide ceramic
finite element simulation
grinding force
workpiece surface stress
workpiece feeding speed
JH-2 constitutive model
