| 抛光区域几何特征与流场创成关键参数关系 |
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| 引用本文： | 杨航,余玉民,张云飞,黄文,何建国.抛光区域几何特征与流场创成关键参数关系[J].强激光与粒子束,2021,33(10):101003-1-101003-8. |
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| 作者姓名： | 杨航 余玉民 张云飞 黄文 何建国 |
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| 作者单位： | 1.遵义师范学院 工学院，贵州 遵义，563006 |
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| 基金项目： | 国家“高档数控机床与基础制造装备”科技重大专项“巨型激光装置光学元件超精密制造系统示范工程”课题资助项目（2017ZX04022001）；贵州省基础研究计划项目（黔科合基础-ZK[2021]一般272）；遵义市科技局科技研发项目（遵市科合HZ字[2020]21号） |
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| 摘 要： | 磁流变抛光在其实际工作过程中，抛光区域几何特征的不同将会对流场创成的关键参数产生很大的影响。针对此问题建立三维模型与实验仿真展开研究。在研究抛光区域几何特征与流场创成关键参数的关系时，先改变抛光区域形状，观察其对流场创成中剪切应力、压力产生的影响；再控制抛光区域的形状相同时，通过改变抛光区域尺寸大小，观察对流场创成中剪切应力、压力产生的影响。结果表明:当抛光区域形状不同时，抛光区域为凹面时剪切应力最大，抛光区域为凸面时剪切应力最小。当抛光区域形状为凸面时，抛光区域两边的剪切应力随着抛光区域曲率大小增大而增大；当抛光区域形状为凹面，抛光区域两边的剪切应力随着抛光区域曲率大小增大而减小。当抛光区域形状不同时，抛光区域为凹面时压力最大，抛光区域为凸面时压力最小。当抛光区域形状为凸面时，抛光区域处的压力随着抛光区域曲率增大而增大；当抛光区域形状为凹面时，抛光区域处的压力随着抛光区域曲率增大而减小。
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| 关 键 词： | 磁流变抛光 几何特征 剪切应力 抛光压力 超精密表面 |
| 收稿时间： | 2021-04-16 |
Relationship between the geometric characteristics of the polished area and the key parameters of the flow field creation |
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| Affiliation: | 1.School of Engineering, Zunyi Normal University, Zunyi 563006, China2.Institute of Mechanical Manufacturing Technology, China Academy of Engineering Physics, Mianyang 621900, China |
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| Abstract: | In the actual working process of magnetorheological polishing, the difference of the geometric characteristics of the polished area will have a great influence on the key parameters of the flow field creation. However, there is still a lack of research in this area, so this article establishes a three-dimensional model and experimental simulation for this problem. In studying the relationship between the geometric characteristics of the polished area and the key parameters of the flow field creation, first change the shape of the polished area to observe its influence on the shear stress and pressure in the flow field creation; when the shape of the polished area is the same, change the size of the polished area and observe its effect on the shear stress and pressure in the creation of the flow field. It is found that when the shape of the polished area differs, the shear stress is the largest when the polishing area is concave, while it is the smallest when the polished area is convex. When the polished area is convex, the shear stress on both sides of the polished area increases as the curvature of the polished area increases; when the polished area is concave, the shear stress on both sides of the polished area increases as the curvature of the polished area increases. When the shape of the polished area is different, the pressure is maximum when the polished area is concave, and the pressure is minimum when the polished area is convex. When the shape of the polished area is convex, the pressure at the polished area increases as the curvature of the polished area increases; when the shape of the polished area is concave, the pressure at the polished area decreases as the curvature of the polished area increases. |
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