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一阶不连续光学元件MRF流体动力学分析方法

杨航 刘小雍 马登秋 张云飞 黄文 何建国

杨航, 刘小雍, 马登秋, 等. 一阶不连续光学元件MRF流体动力学分析方法[J]. 强激光与粒子束, 2019, 31: 022001. doi: 10.11884/HPLPB201931.180340
引用本文: 杨航, 刘小雍, 马登秋, 等. 一阶不连续光学元件MRF流体动力学分析方法[J]. 强激光与粒子束, 2019, 31: 022001. doi: 10.11884/HPLPB201931.180340
Yang Hang, Liu Xiaoyong, Ma Dengqiu, et al. Fluid dynamics analysis method for MRF of first order discontinuous optical elements[J]. High Power Laser and Particle Beams, 2019, 31: 022001. doi: 10.11884/HPLPB201931.180340
Citation: Yang Hang, Liu Xiaoyong, Ma Dengqiu, et al. Fluid dynamics analysis method for MRF of first order discontinuous optical elements[J]. High Power Laser and Particle Beams, 2019, 31: 022001. doi: 10.11884/HPLPB201931.180340

一阶不连续光学元件MRF流体动力学分析方法

doi: 10.11884/HPLPB201931.180340
基金项目: 

贵州省科技计划项目 黔科合LH字[2017]7081

贵州省科技计划项目 黔科合基础[2018]1179

贵州省教育厅青年科技人才成长项目 黔教合KY字[2017]249

贵州省教育厅青年科技人才成长项目 黔教合KY字[2018]319

贵州省教育厅青年科技人才成长项目 黔教合KY字[2016]254

教育部重点实验室开放基金课题项目 黔教合KY字[2017]385

详细信息
    作者简介:

    杨航(1989-),男,讲师,主要从事超精密加工装备技术与工艺理论研究;yhangde@mail.dlut.edu.cn

  • 中图分类号: TH164

Fluid dynamics analysis method for MRF of first order discontinuous optical elements

  • 摘要: 一阶不连续光学元件的磁流变抛光问题是制约我国高精高效光学制造领域发展的难题之一,其涉及锥形、矩形等几何形貌元件的光学元件加工问题以及常见光学元件的边缘效应控制问题。提出了基于一阶不连续光学元件的磁流变抛光流体动力学方法,建立了该类元件抛光区域流体动力分析的理论方法和数值手段。首先,对磁流变抛光工况下的流场进行了合理假设,其次,从微元流体动力方程出发,建立了适用于一阶不连续面形的流场分析方法,最后,基于有限差分法和数值迭代方法建立了流场控制方程的数值计算方法。通过对切入距离为1~18 mm的抛光过程进行数值仿真,发现该方法所获取的一阶不连续面形的压力分布形态是正确的,产生的不连续压降与实验观测一致。
  • 图  1  磁流变抛光原理与典型设备示意图

    Figure  1.  Schematic diagram of magnetorheological finishing principle and typical equipment

    图  2  光学镜面磁流变抛光中常见的一阶不连续曲面示意

    Figure  2.  Schematic diagram of the first order discontinuous surfaces commonly seen in magnetorheological finishing of optical mirrors

    图  3  一阶不连续面形磁流变抛光边缘缺陷干涉仪测量结果

    Figure  3.  Interferometeric measurement results of MRF edge defect of first-order discontinuous part

    图  4  磁流变抛光区域工况及参数定义示意图

    Figure  4.  Schematic diagram of working conditions and parameter definitions in MRF

    图  5  磁流变抛光区域流场微元体受力示意图

    Figure  5.  Force diagram of flow field elements in magnetorheological finishing area

    图  6  磁流变抛光区域流场网络分布关系

    Figure  6.  Distribution of flow field network in magnetorheological finishing region

    图  7  切入距离为1~18 mm时磁流变抛光压力场计算结果

    Figure  7.  Calculation results of MRF pressure field when the cutting distance is 1~18 mm

    图  8  切入距离为17 mm时磁流变抛光压力场三维图

    Figure  8.  Three-dimensional diagram of MRF pressure field when the cutting distance is 17 mm

    图  9  实验获取的切入距离为1~18 mm的抛光斑

    Figure  9.  Polishing spots with a cutting distance of 1~18 mm

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出版历程
  • 收稿日期:  2018-11-28
  • 修回日期:  2019-01-18
  • 刊出日期:  2019-02-15

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