激光与光电子学进展, 2020, 57 (3): 032201, 网络出版: 2020-02-17
磁流变抛光流场瞬变过程响应时间 下载: 1465次
Response Time of Flow Transient Process of Magnetorheological Finishing
光学设计 强激光系统 超精密光学加工 磁流变抛光(MRF) 瞬变过程 在位测量 响应时间 optical design high-power laser system ultra-precision optical fabrication magnetorheological finishing transient process in situ measurement response time
摘要
提出一种磁流变抛光瞬变过程多相颗粒流模型,获得了瞬变过程在宏观、介观、微观三个层次的力学关联,从而建立了基于三向在位力学信号的瞬变过程表征方法,在位、同步、动态地测定了磁流变抛光的三向力学信号,解决了毫米尺度空间下磁流变抛光液-固界面的在位测量问题。采用屈服强度为220 kPa、宾汉黏度为0.07 Pa·s的高去除率抛光液对?50 mm的BK7超精密平面元件进行磁流变抛光实验,测量得到磁流变抛光流场瞬变响应时间为700 ms。
Abstract
In this paper, a multiphase particle flow model of the transient process of magnetorheological finishing (MRF) has been proposed. The mechanical relations of the transient processes are obtained at macroscopic, mesoscopic, and microscopic levels. A transient process characterization method based on three-direction in situ mechanical signals has also been proposed. The three-direction mechanical signals of the MRF are synchronously and dynamically measured in situ. The problem of in situ measurements of the liquid-solid interface of the MRF in millimeter-scale space is solved. The high removal rate finishing fluid with a yield strength of 220 kPa and a Bingham viscosity of 0.07 Pa·s is used to conduct the MRF experiment on a BK7 ultra-precision planar element of ?50-mm, and the transient response time of the MRF flow is identified to be 700 ms.
杨航, 宋书飘, 张帅, 甘欢, 黄文, 何建国. 磁流变抛光流场瞬变过程响应时间[J]. 激光与光电子学进展, 2020, 57(3): 032201. Hang Yang, Shupiao Song, Shuai Zhang, Huan Gan, Wen Huang, Jianguo He. Response Time of Flow Transient Process of Magnetorheological Finishing[J]. Laser & Optoelectronics Progress, 2020, 57(3): 032201.