HAMR磁盘温度与润滑剂行为的数值模拟研究  

Numerical Simulation Study on Disk Temperature and Lubricant Behavior of HAMR

作　　者：彭亮 黄凯豪 刘青康 PENG Liang;HUANG Kai-hao;LIU Qing-kang(School of Energy and Mechanical Engineering,Jiangxi University of Technology,Nanchang 330044,China)

机构地区：[1]江西理工大学能源与机械工程学院,江西南昌330044

出　　处：《机械工程与自动化》2024年第6期15-17,共3页Mechanical Engineering & Automation

基　　金：国家自然科学基金资助项目(52105188);江西省青年科学基金资助项目(20202BAB214018);江西省研究生创新专项基金项目(YC2023-S631);江西理工大学教学改革研究课题(XJG-2023-45);江西理工大学学位与研究生教育教学改革研究项目(YJG2023019)。

摘　　要：热辅助磁存储(HAMR)技术是克服传统机械硬盘密度限制的关键技术之一,HAMR激光加热影响多层磁盘的温度分布,导致润滑剂变形,影响磁头/磁盘界面稳定性。推导了激光加热磁盘方程和润滑剂控制方程,利用数值模拟方法研究了激光照射下HAMR多层磁盘温度分布和黏弹性润滑剂行为。研究结果发现,HAMR多层磁盘的温度分布呈现风飘树形状,低吸光系数的中间层出现了凹面;低激光移动速度导致磁盘温度高、润滑剂变形大、弹性行为槽和黏性行为轨迹深、侧脊高。Heat-assisted magnetic recording(HAMR)is one of the key technologies to overcome the density limitations of hard disk drives.The laser of HAMR affects the temperature distribution of multi-layer disks,causing lubricant deformation and affecting the stability of the head/disk interface.The equations for laser heating disk and lubricant control are derived.The numerical simulation calculation results are analyzed.The temperature distribution of HAMR multilayer disks exhibits a windy tree shape,with concave surfaces appearing in the middle layer with low absorption coefficient.Low laser speed leads to high disk temperature,large lubricant deformation,deep elastic behavior grooves,high side ridges,and deep viscous behavior trajectories.

关 键 词：热辅助磁记录 多层磁盘 粘弹性润滑剂 激光 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术] TH117.22[自动化与计算机技术—计算机科学与技术]