摘要
用有限元法对增韧氧化锆和低纯度氧化铝陶瓷依靠初始裂纹的形成,扩展和转折而实现的切屑形成和材料去除过程进行理论研究,并分析裂纹扩展路径的影响因素。所得主要结论通过现场观察和高速摄影机拍摄的系列照片得到了验证。
This paper analyzes the machining mechanism of engineering cemamics based on fracture mechanics. According to the finite element method, the chip formation and material removal process, which depend upon initial crack forming, propagating and turning etc. are theoretically studied on toughened ZrO_2 and low purity alumina ceramics. In the meantime, the factor of influence has been discussed. The main conclusions obtained are experimentally examined with on-line observations and a series of photos of dynamic cutting process taken by a high speed camera.
出处
《天津大学学报》
EI
CAS
CSCD
1991年第3期13-19,共7页
Journal of Tianjin University(Science and Technology)
基金
国家自然科学基金资助项目
关键词
陶瓷材料
去除
切削
裂纹
crack propagation, material removal process, chip formation
