工程陶瓷超声波加工机理的有限元分析  

FEM Analysis on Ultrasonic Machining Mechanism of Engineering Ceramics

作　　者：刘垚[1] 轧刚[2] 

机构地区：[1]山西大学动力工程系,山西太原030013 [2]太原理工大学机械工程学院,山西太原030024

出　　处：《电加工与模具》2014年第5期32-33,共2页Electromachining & Mould

基　　金：山西省自然科学基金资助项目(2005-1051)

摘　　要：采用超声波加工工程陶瓷等硬脆材料时,工件材料表面受到磨粒的碰撞,接触区域将发生变形。利用断裂力学和接触力学的方法分析撞击区域的应力及应力波传播,并使用ANSYS/LSDYNA有限元软件数值模拟分析工件材料表面的裂纹产生过程及扩展。When hard and brittle materials such as engineering ceramics are processed by ultrasonic machining,the surface of the workpiece is impacted by the abrasive material,the contact area will be deformed. According to the theory of contact mechanics and fracture mechanics,the stress and wave are analyzed in the deformed area. Besides,the generation process and extension of the workpiece crack are analyzed numerically and simulatedly by ANSYS/LS-DYNA finite element software.

关 键 词：超声波加工 有限元 裂纹扩展 应力波分析 

分 类 号：TG663[金属学及工艺—金属切削加工及机床]