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超大容量硬盘的流场性能研究（英文）
  • 书号：9787030594150
    作者：李辉等
  • 外文书名：
  • 装帧：平装
    开本：B5
  • 页数：197
    字数：262000
    语种：en
  • 出版社：科学出版社
    出版时间：2018-11-01
  • 所属分类：
  • 定价： ￥120.00元
    售价： ￥94.80元
  • 图书介质:
    纸质书

  • 购买数量： 件  商品库存： 5
  • 商品总价：

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本书结合多物理场有限元建模仿真、流体力学理论建模与算法求解、蒙特卡罗与分子动力学模拟方法，跨尺度系统研究了超大容量硬盘超低磁头飞行高度条件下磁头的飞行稳定性问题。主要内容包括：硬盘内部流体与颗粒运动特性、悬臂梁的流致振动及PZT声压抑制振动、颗粒污染物在磁头空气轴承面上的运动吸附与二次迁移、盘面纳米级厚度润滑剂动力学特性等。
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目录

  • Contents
    Preface
    Chapter 1 Introduction 1
    1.1 Basic 1
    1.2 Evolution 3
    1.3 Motivation 6
    1.4 Outline 8
    References 9
    Chapter 2 Simulation of flow and vibration characteristics in HDD level 11
    2.1 Introduction 11
    2.2 Fluid-structure interaction simulation model of HGA 12
    2.3 Flow-induced HGAvibrations 15
    2.4 Operational shock response of HGA 20
    2.5 Summary 26
    References 27
    Chapter 3 Suppressing flow-induced vibrations of HGA by a PZT 29
    3.1 Introduction 29
    3.2 PZT designed on the cover inner surface 30
    3.3 Flow-induced vibrations of HGA 31
    3.4 PZT acoustic pressure induced vibrations of HGA 32
    3.5 Summary 36
    References 37
    Chapter 4 Simulation of temperature distribution around laser-heating media in HAMR 38
    4.1 Introduction 38
    4.2 HAMR HDD model 39
    4.3 Temperature distributions around the laser-heating area on the disk surface 42
    4.4 Cooling effects of disk rotation and HDI gas bearing 46
    4.5 Summary 48
    References 49
    Chapter 5 Simulation of particles trajectories in HDD considering the trapping criterion，temperature and arm swing 51
    5.1 Introduction 51
    5.2 Considering the trapping criterion 53
    5.2.1 Particle trajectory inside HDD 56
    5.2.2 Effects of particle release position 58
    5.2.3 Effects of particle size 62
    5.3 Effects of temperature on particle trajectories 65
    5.3.1 Temperature distribution and velocity distribution 66
    5.3.2 Different particle release positions 68
    5.3.3 Different particle sizes 72
    5.4 Effects of armswing on particle trajectories 75
    5.4.1 Characteristics of fluid fields 77
    5.4.2 Particle trajectories 80
    5.5 Summary 84
    References 86
    Chapter 6 Numerical simulation of flow characteristics in HDI 88
    6.1 Introduction 88
    6.2 Simulation method of contaminations on ABS 89
    6.2.1 Air bearing simulation 90
    6.2.2 The mesh transformation method 91
    6.2.3 Air velocity calculation 92
    6.2.4 Air shear stress calculation 93
    6.2.5 Particle trajectory 93
    6.3 Effects of skew angle on the air flow patterns 94
    6.3.1 Flying attitudes of slider 94
    6.3.2 Effects of skew angle on the air flow velocity patterns 95
    6.3.3 Effects of skew angle on the air shear stress patterns 97
    6.4 Simulation of air flow and particle trajectories in HDI 98
    6.4.1 Model and flying attitudes of slider 98
    6.4.2 Air flow patterns and particle trajectories 99
    6.5 Summary 105
    References 106
    Chapter 7 Study of particle trajectory and contamination in HDI 108
    7.1 Introduction 108
    7.2 Simulation model of particle movement in HDI 109
    7.3 Particle movement behaviors in HDI 113
    7.3.1 Particle trajectory in HDI 113
    7.3.2 Parametric simulation of particle trajectory 114
    7.3.3 Particle behaviors in HDI 116
    7.3.4 Particle trajectories in the air and helium filled HDI 118
    7.4 Summary 120
    References 120
    Chapter 8 Study of particle adhesion criterion on slider ABS 122
    8.1 Introduction 122
    8.2 Model and methods of the particle-slider interaction 123
    8.3 Interaction between particle and slider 126
    8.3.1 Adhesion criterion on the slider surface 126
    8.3.2 Particle rebounding from the slider surface 130
    8.4 Summary 133
    References 134
    Chapter 9 Analysis of the adhered particle migration on slider ABS 136
    9.1 Introduction 136
    9.2 Simulation model of particle migration 137
    9.3 Results and discussions 141
    9.3.1 Particle migration styles criterion 141
    9.3.2 Effect of different factors on particle migration 144
    9.3.3 Particle secondary migration trajectories and behaviors 146
    9.4 Summary 148
    References 148
    Chapter 10 Simulation of bearing force over BPM and smooth media in helium-filled drive 151
    10.1 Introduction 151
    10.2 Model for DSMC simulation 153
    10.2.1 DSMC simulation method 153
    10.2.2 Slider-disk simulation model 154
    10.2.3 Calculation models for temperature and velocity in HDI 156
    10.3 Effects of different conditions on bearing force in HDD 157
    10.3.1 Total bearing force acting on the slider 157
    10.3.2 Component bearing force in HDD 163
    10.4 Summary 165
    References 166
    Chapter 11 Study of perfluoropolyethers lubricant consumption and recovery in HAMR using MD simulation method 168
    11.1 Introduction 168
    11.2 Molecular dynamics simulation method 170
    11.3 3D model of the slider-lubricant-substrate system 170
    11.4 PFPE desorption and recovery 173
    11.5 Summary 180
    References 181
    Chapter 12 Study of formation and breaking of lubricant bridge in HDI by MD simulation method 183
    12.1 Introduction 183
    12.2 3D model of the slider-lubricant-substrate system 184
    12.3 Formation and breaking of lubricant bridge 188
    12.4 Summary 195
    References 196
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