电加工与模具
電加工與模具
전가공여모구
ELECTROMACHINING & MOULD
2014年
5期
32-33
,共2页
超声波加工%有限元%裂纹扩展%应力波分析
超聲波加工%有限元%裂紋擴展%應力波分析
초성파가공%유한원%렬문확전%응력파분석
ultrasonic machining%finite element%crack propagation%stress wave analysis
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/LS-DYNA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。
採用超聲波加工工程陶瓷等硬脆材料時，工件材料錶麵受到磨粒的踫撞，接觸區域將髮生變形。利用斷裂力學和接觸力學的方法分析撞擊區域的應力及應力波傳播，併使用ANSYS/LS-DYNA有限元軟件數值模擬分析工件材料錶麵的裂紋產生過程及擴展。
채용초성파가공공정도자등경취재료시，공건재료표면수도마립적팽당，접촉구역장발생변형。이용단렬역학화접촉역학적방법분석당격구역적응력급응력파전파，병사용ANSYS/LS-DYNA유한원연건수치모의분석공건재료표면적렬문산생과정급확전。
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.
