基于Kahan线性化快速计算梯度磁场下磁流变抛光区域抛光粉沉降特性  

Fast calculation of polishing powder sedimentation characteristics in magnetorheological polishing area under gradient magnetic field based on Kahan linearization

作　　者：杨航 张帅 张云飞[2,3] 黄文[2,3] 何建国[2] Yang Hang;Zhang Shuai;Zhang Yunfei;Huang Wen;He Jianguo(School of Engineering,Zunyi Normal University,Zunyi 563006,China;Institute of Mechanical Manufacturing Technology,China Academy of Engineering Physics,Mianyang 621900,China;Key Laboratory of Ultra-precision Processing Technology,China Academy of Engineering Physics,Chengdu 610200,China)

机构地区：[1]遵义师范学院工学院,贵州遵义563006 [2]中国工程物理研究院机械制造工艺研究所,四川绵阳621900 [3]中国工程物理研究院超精密加工技术重点实验室,成都610200

出　　处：《强激光与粒子束》2022年第8期57-63,共7页High Power Laser and Particle Beams

基　　金：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)。

摘　　要：针对抛光粉沉降特性数值计算这一超大规模非线性问题,基于Kahan线性化解决了超大规模流固耦合计算问题。研究了以羟基铁粉和硅油为主要成分组合而成的抛光粉多相流在梯度磁场下抛光区域的沉降特性。以质量分数70%、粒径5μm的羟基铁粉和粘度为0.973 Pa·s的硅油组合而成的抛光粉为研究对象,实现了不同的抛光轮转速、不同嵌入深度以及不同羰基铁粉质量分数情况下的沉降规律分析。结果发现:磁流变抛光区域的抛光粉会随着抛光轮转速的增大而增多;当到达出口时,抛光粉的分布趋于稳定状态;抛光粉会随着嵌入深度的增加而增多并存在饱和区;羟基铁粉的质量分数以非线性的方式影响沉降能力。The sedimentation characteristics of the magnetic polishing liquid in the magnetorheological polishing area is an important part of the material removal mechanism in the polishing process.Aiming at the ultralarge-scale nonlinear problem of numerical calculation of polishing powder sedimentation characteristics,this paper solves the ultra-large-scale fluid-structure interaction calculation problem based on Kahan linearization.The sedimentation characteristics of the multiphase flow of polishing powder composed of hydroxy iron powder and silicone oil in the polishing area under gradient magnetic field were studied.Taking the polishing powder composed of hydroxyl iron powder with mass fraction of 70%and particle size of 5um and silicone oil with viscosity of 0.973 Pa·s as the research object,sedimentation analysis of different polishing wheel rotation speeds,different embedding depths and different mass fractions of carbonyl iron powder were realized.It is found that the polishing powder in the magnetorheological polishing area will increase with the increase of the rotating speed of the polishing wheel;when it reaches the outlet,the distribution of the polishing powder tends to be stable;the polishing powder will increase with the increase of the embedded depth and there is a saturation zone;the mass fraction of hydroxy iron powder affects the sedimentation ability in a non-linear manner.

关 键 词：Kahan方法 磁流变抛光 多相流 梯度磁场 沉降规律 

分 类 号：TH164[机械工程—机械制造及自动化]