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基于Christopherson迭代的超精密加工流场分析方法

Novel fluid field analysis method for ultra-precision machining based on christopherson iteration

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摘要

随着特种超精密加工技术的发展, 复杂流体被越来越多地用于超精密加工工艺中。超精密加工流场分析具有几何特征复杂、流体本构特性多样、流体边界为自有边界等特点, 传统流体数值分析方法难以实现可靠分析。从流体的一般特性出发, 将D. G. Christopherson提出的非负二阶偏微分系统的超松弛迭代方法用于超精密加工流场分析, 建立了适应性与可靠性兼顾的流场分析方法。以磁流变抛光为例, 开展了抛光区域压力场数值计算, 结果表明所得压力分布形态正确, 且分布从x轴正半轴延伸到负半轴, 与郑立功等人的实验测定结果一致。另外, 基于Kistler力传感器对磁流变抛光过程的法向压力在0.1~0.3 mm浸深段进行了在位测量, 发现计算与实验结果偏差均小于20%。表明了该方法的有效性与准确性。

Abstract

With the development of ultra-precision machining technology, complex fluid is increasingly utilized. The analysis of ultra-precision machining fluid field is characterized by complex geometry, diverse constitutive equation and free boundary flow, which results in unsatisfactory analysis if adopting traditional numerical method. Based on general characteristic of fluid field, a robust and widely adaptable fluid analysis method is proposed in this paper by applying D. G. Christopherson’s super-relaxation iterative method for nonnegative second order partial differential systems to ultra-precision machining fluid field analysis. Besides, taking magnetorheological finishing as an example, the numerical calculation of pressure field is conducted for the polishing area and it is revealed that the calculated pressure distribution has reasonable morphology and it extends from positive x axis to negative x axis, which agrees with the experiment results by Zheng Ligong et al. Moreover, the in-situ experimental measurement of normal pressure by Kistler sensor is conducted for immersion depth ranging over 0.1 to 0.3 mm, it is demonstrated that the relative errors of calculations against experimental results are all less than 20%, indicating that the proposed method is valid and accurate.

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中图分类号:TH164

DOI:10.11884/hplpb201931.180373

所属栏目:ICF与激光等离子体

基金项目:贵州省教育厅青年科技人才成长项目(黔教合KY字[2017]249); 贵州省科技计划项目(黔科合LH字[2017]7081); 教育部重点实验室开放基金课题项目(黔教合KY字[2017]385); 国家自然科学基金项目(61605182)

收稿日期:2018-12-20

修改稿日期:2019-02-21

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作者单位    点击查看

杨 航:遵义师范学院 工学院, 贵州 遵义 563006国防科技大学 智能科学学院, 长沙 410073
马登秋:遵义师范学院 工学院, 贵州 遵义 563006
张 强:遵义师范学院 工学院, 贵州 遵义 563006
刘小雍:遵义师范学院 工学院, 贵州 遵义 563006
樊 炜:中国工程物理研究院 机械制造工艺研究所, 四川 绵阳 621900中国工程物理研究院 超精密加工技术重点实验室, 成都 610200
张云飞:中国工程物理研究院 机械制造工艺研究所, 四川 绵阳 621900
黄 文:中国工程物理研究院 机械制造工艺研究所, 四川 绵阳 621900中国工程物理研究院 超精密加工技术重点实验室, 成都 610200
何建国:中国工程物理研究院 机械制造工艺研究所, 四川 绵阳 621900

联系人作者:杨航(yhangde@mail.dlut.edu.cn)

备注:杨 航(1989-), 男, 博士研究生, 讲师, 主要从事超精密加工装备技术与工艺理论研究。

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引用该论文

Yang Hang,Ma Dengqiu,Zhang Qiang,Liu Xiaoyong,Fan Wei,Zhang Yunfei,Huang Wen,He Jianguo. Novel fluid field analysis method for ultra-precision machining based on christopherson iteration[J]. High Power Laser and Particle Beams, 2019, 31(6): 062002

杨 航,马登秋,张 强,刘小雍,樊 炜,张云飞,黄 文,何建国. 基于Christopherson迭代的超精密加工流场分析方法[J]. 强激光与粒子束, 2019, 31(6): 062002

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