Multi-Physics Coupling Modeling and Experimental Investigation of Vibration-Assisted Blisk Channel ECM
点击次数：
影响因子：2.891
DOI码：10.3390/mi13010050
发表刊物：Micromachines
关键字：vibration-assisted electrochemical machining (ECM) blisk narrow channel high aspect ratio multi-physics coupling simulation machining stability
摘要：Due to its advantages of good surface quality and not being affected by material hardness, electrochemical machining (ECM) is suitable for the machining of blisk, which is known for its hard-to-machine materials and complex shapes. However, because of the unstable processing and low machining quality, conventional linear feeding blisk ECM has difficulty in obtaining a complex structure. To settle this problem, the vibration-assisted ECM method is introduced to machine blisk channels in this paper. To analyze the influence of vibration on the process of ECM, a two-phase flow field model is established based on the RANS k-ε turbulence model, which is suitable for narrow flow field and high flow velocity. The model is coupled with the electric field, the flow field, and the temperature field to form a multi-physics field coupling model. In addition, dynamic simulation is carried out on account of the multi-physics field coupling model and comparative experiments are conducted using the self-developed ECM machine tool. While a shortcut appeared in the contrast experiment, machining with vibration-assisted channel ECM achieved fine machining stability and surface quality. The workpiece obtained by vibration-assisted channel ECM has three narrow and straight channels, with a width of less than 3 mm, an aspect ratio of more than 8, and an average surface roughness Ra in the hub of 0.327 μm. Compared with experimental data, the maximum relative errors of simulation are only 1.05% in channel width and 8.11% in machining current, which indicates that the multi-physics field coupling model is close to machining reality.
合写作者：宋莎莎,张俊生,常伟杰,杨海东,唐火红,陈顺华
第一作者：张聚臣
论文类型：期刊论文
学科门类：工学
文献类型：J
卷号：13
期号：50
是否译文：否
发表时间：2021-12-14
收录刊物：SCI