摘要
为探索Si C/Al功能梯度材料的电火花加工特性,建立了电火花加工连续多脉冲放电温度场仿真模型,开展了连续多脉冲放电蚀除动态模拟仿真研究,应用生死单元法分析了放电凹坑位置的随机分布情况,研究了峰值电流、脉冲宽度对放电凹坑和材料去除率的影响规律,并进行了实验验证。结果表明:随着峰值电流和脉冲宽度的增大,材料去除率逐渐提高,仿真结果与实验结果具有相同的变化趋势;误差分析显示,理论值与实验结果最大误差为9.84%,最小误差为5.10%。
In order to explore the EDM characteristics of SiC//Al functionally graded materials,a simulation model of continuous multi-pulse discharge temperature field of EDM was established. The dynamic simulation of continuous multi-pulse discharge was carried out. The pit position of the random distribution was analysed using birth and death method. The influence of peak current and pulse width on discharge pits and material removal rate was studied and verified experimentally. The results show that with the increase of peak current and pulse width ,the material removal rate is gradually increased. The simulation results in the same direction as the experimental results,and the error analysis is carried out. The maximum error of theoretical experimental results is 9.84% and the minimum error is 5.10%.
作者
唐霖
任磊
冯鑫
赵建社
朱秋林
TANG Lin REN Lei FENG Xin ZHAO Jianshe ZHU Qiulin(School of Mechatronic Engineering, Xi＇an Technological University, Xi＇an 710021, China Nanjing University of Aeronautics and Astronautics ,Jiangsu Key Laboratory of Precision and Micro-manufacturing Technology, Nanjing 211106, China)
出处
《电加工与模具》
2017年第5期1-5,共5页
Electromachining & Mould
基金
国家自然科学基金资助项目(51405365)
陕西省科技统筹创新工程重点实验室项目(2014SZS20-Z01
2014SZS20-P05)
江苏省精密与微细制造技术重点实验室开放基金资助项目(2016JSKF008)
关键词
功能梯度材料
电火花加工
连续多脉冲放电
生死单元法
functionally graded materials
EDM
continuous multi-pulse discharge
birth and deathmethod
