旋转超声加工机理的有限元分析

Finite Element Analysis on the Principle of Rotary Ultrasonic Machining

旋转超声加工是加工玻璃、工程陶瓷和宝石等硬脆材料的有效方法,具有较高的生产率、良好的加工精度和表面质量。在对其加工机理的研究过程中,选用金刚石磨粒和玻璃工件进行建模,运用LS-DYNA软件对工件在加工中的应力变化情况和裂纹的产生与发展进行模拟,结合试验结果,对其加工机理进行研究,并对加工表面质量进行分析。

Rotary ultrasonic machining（RUM） is an effective technology for the machining of hard and brittle materials, such as glass, engineering ceramic, and diamond and so on. This technology has high productivity, and can obtain good machining accuracy and surface quality. In the process of investigation, diamond grain and glass are selected to create a machining model. LS-DYNA software is used to simulate the stress variations and the development of micro-cracks in the machining process. Combining the experimental results, studies of the machining mechanism and the analysis on surface quality are also carried out.