摘要
基于非局部理论,建立了纳米复相陶瓷材料在超声振动下的非局部本构模型,通过对超声振动条件下纳米复相陶瓷磨削试验研究,获得超声频率对磨削力的影响规律以及非局部衰减率的变化规律,并对磨削表面三维微观轮廓特征进行观测分析。试验结果表明,试件在所研究超声振动频率范围内磨削力出现衰减现象,且随频率的增大更为明显,超声振动大大减小了磨削力,表面质量得到明显改善,更容易实现延性域加工。
The nonlocal constitutive model of ceramics materials under ultrasonic vibration is established based on nonlocal theory. The effects of ultrasonic frequencies on the grinding force and nonlocal decay rate are obtained through the experimental study of material properties under ultrasonic vibration grinding test. The results of experiments showed that grinding force is attenuated in the ultrasonic vibration frequency ranges and this attenuation phenomenon becomes more and more evident by the increase of the ultrasonic frequencies. Through analysis and observation of the grinding surface 3D micro outline features, it showed that ultrasonic vibration greatly reduce the grinding force, and the surface quality are improved obviously, and it said that it is much easier to achieve ductile-mode machining under ultrasonic vibration.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2013年第3期512-517,522,共7页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金资助项目(No.50975080)
关键词
非局部理论
超声振动
弹性核函数
纳米复相陶瓷
磨削力
三维微观轮廓特征
nonlocal theory
ultrasonic vibration
elastic kernel function
composite nano-ceramics
grinding force
3D profile features
作者简介
卞平艳（1982-），女，博士研究生．主要从事硬脆材料超精密加工方面的研究．E—mail：bianpy@hpu．edu．cn
