绝缘陶瓷高瞬时能量密度单脉冲放电的数值模拟  

Numerical Simulation of Single Pulse Discharge Machining Insulating Ceramics with High Instantaneous Energy Density

作　　者：纪仁杰[1] 刘永红[1] 房磊[1] 张彦振[1] 王飞[1] 申泱[1] 

机构地区：[1]中国石油大学(华东)机电工程学院,山东东营257061

出　　处：《电加工与模具》2011年第6期1-6,11,共7页Electromachining & Mould

基　　金：国家自然科学基金资助项目(50675225);国家科技部科技人员服务企业行动资助项目(2009GJC60047)

摘　　要：基于热传导理论建立了绝缘陶瓷高瞬时能量密度单脉冲放电的温度场模型,并对陶瓷工件、工具电极和辅助电极的温度场进行了三维数值模拟,得到了不同介质和峰值电压对陶瓷工件、工具电极和辅助电极上温度场影响规律的关系。将数值模拟与试验结果进行了对比,结果表明,所建立的绝缘陶瓷高瞬时能量密度单脉冲放电模型能较好地预测放电坑深度和体积的变化,仿真结果与试验结果相吻合。The temperature field of the single pulse discharge with the high instantaneous energy density for insulating ceramics is modeled based on the heat conduction theory. Three-dimensional numerical simulation for the temperature fields of insulating ceramics, tool electrode, and assisting electrode has been carried out. The effects of various dielectrics and peak voltages on the temperature fields of insulating ceramics, tool electrode, and assisting electrode have been investigated. The comparison between the results of numerical simulation and experiment shows that the single discharging model is able to forecast the change of the crater depth and crater volume effectively.

关 键 词：电火花加工 绝缘陶瓷 单脉冲放电 数值模拟 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]