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基于流體力學的金屬增材制造過程仿真研究 版權信息
- ISBN：9787121406140
- 條形碼：9787121406140 ; 978-7-121-40614-0
- 裝幀：一般膠版紙
- 冊數：暫無
- 重量：暫無
- 所屬分類：>
基于流體力學的金屬增材制造過程仿真研究 本書特色
本書針對金屬增材制造加工過程進行了系統研究，基于計算流體動力學方法研究金屬增材制造工藝過程中的流體問題。**章為緒論。第二章至第四章研究金屬增材制造打印機腔體內部流場及顆粒分布特性，并設計了新穎的流體罩和負壓管對打印機腔體內部流場優化以及濺射顆粒清除。第五章至第九章主要研究金屬增材制造加工過程中熔池特性，其中第五章研究了金屬熔池動力學特性，第六章研究了外加磁場對金屬增材制造過程中熔池以及凝固過程的影響，第七章和第八章研究了金屬增材制造過程中工件內部單氣孔缺陷和多氣孔缺陷的演化過程。第九章研究了外部流場對金屬增材制造過程中工件內部氣孔缺陷演化過程的影響。第十章研究金屬增材制造工件激光清洗工藝，以控制工件表面粗糙度。
基于流體力學的金屬增材制造過程仿真研究 內容簡介
本書針對金屬增材制造加工過程進行系統研究，基于計算流體動力學方法研究金屬增材制造工藝過程中的流體問題。章為緒論。第2～4章研究金屬增材制造打印機腔體內部流場及顆粒分布特性，并設計新穎的流體罩和負壓管分別對打印機腔體內部流場進行優化及濺射顆粒清除。第5～9章主要研究金屬增材制造加工過程中熔池特性，其中，第5章研究金屬熔池動力學特性，第6章研究外加磁場對金屬增材制造過程中熔池及凝固過程的影響，第7章和第8章研究金屬增材制造過程中工件內部單氣孔缺陷和多氣孔缺陷的演化過程。第9章研究金屬增材制造工件激光清洗工藝，以控制工件表面粗糙度。本書內容系統全面，新穎獨特，面向從事增材制造和激光加工等相關領域的科研人員，以及關注優選制造、智能制造的專家學者和普通讀者。
基于流體力學的金屬增材制造過程仿真研究 目錄
Chapter 1 Introduction 1
1．1 Background 2
1．2 Motivation 3
1．3 Outline 4
Chapter 2 Investigation of the flow field in Laser-based Powder Bed Fusion
manufacturing 5
2．1 Introduction 7
2．2 Simulation model of the L-PBF printer 10
2．2．1 Problem description 10
2．2．2 Geometric model of the L-PBF printer 11
2．2．3 Numerical model of the L-PBF printer 12
2．3 Simulation results 16
2．3．1 Distribution of the flow field 16
2．3．2 Distribution of the temperature field 21
2．3．3 Distribution of spatter particles 23
2．4 Conclusions 28
References 30
Chapter 3 Investigation of optimizing the flow field with fluid cover in
Laser-based Powder Bed Fusion manufacturing process 33
3．1 Introduction 35
3．2 Simulation model of L-PBF printer 37
3．2．1 Geometry of L-PBF printer with a fluid stabilizing cover 37
3．2．2 Numerical model of printer with a fluid stabilizing cover 37
3．2．3 Mesh of L-PBF printer with a fluid stabilizing cover 39
3．2．4 Model of the fluid stabilizing cover and particles 40
3．3 Simulation results and discussion 43
3．3．1 Influence of the fluid stabilizing cover on the flow field 43
3．3．2 Influence of fluid stabilizing cover on particle distribution and removing rate 47
3．4 Summary and conclusions 51
References 53
Chapter 4 Numerical investigation of controlling spatters with negative pressure
pipe in Laser-based Powder Bed Fusion process 54
4．1 Introduction 56
4．2 Simulation model of L-PBF printer 59
4．2．1 Geometric model of L-PBF printer 59
4．2．2 Numerical model of L-PBF printer 61
4．3 Simulation results and discussions 64
4．3．1 Effect of pipe diameter 68
4．3．2 Effect of outlet flow rate 70
4．3．3 Effect of initial particle velocity 74
4．4 Summary and conclusions 76
References 78
Chapter 5 Evolution of molten pool during Laser-based Powder Bed Fusion of
Ti-6Al-4V 80
5．1 Introduction 82
5．2 Modeling approach and numerical simulation 85
5．2．1 Model establishing and assumptions 85
5．2．2 Governing equations 87
5．2．3 Heat source model 87
5．2．4 Phase change 88
5．2．5 Boundary conditions setup 89
5．2．6 Mesh generation 90
5．3 Experimental procedures 91
5．4 Results and discussions 92
5．4．1 Surface temperature distribution and morphology 92
5．4．2 Formation and solidification of the molten pool 94
5．4．3 Development of the evaporation region 98
5．5 Conclusions 101
References 103
Chapter 6 Simulation of surface deformation control during Laser-based
Powder Bed Fusion Al-Si-10Mg powder using an external magnetic field 107
6．1 Introduction 109
6．2 Modeling and simulation 112
6．2．1 Modeling of L-PBF 112
6．2．2 Mesh model and basic assumptions 113
6．2．3 Heat transfer conditions 114
6．2．4 Marangoni convection 115
6．2．5 Phase-change material 115
6．2．6 Lorentz force 116
6．3 Results 118
6．3．1 Velocity field in the molten pool 118
6．3．2 Lorentz force in the MP 121
6．3．3 Surface deformation of the sample 123
6．4 Conclusions 127
References 128
Chapter 7 Influence of laser post- processing on pore evolution of Ti-6Al-4V
alloy by Laser-based Powder Bed Fusion 131
7．1 Introduction 133
7．2 Experimental procedures 136
7．2．1 Sample fabrication 136
7．2．2 Determination of porosity by micro-CT 137
7．3 Modeling and simulation 140
7．3．1 Numerical model 140
7．3．2 Moving Gaussian heat source 143
7．3．3 Thermal boundary conditions 143
7．3．4 Marangoni effect， surface tension and recoil pressure 144
7．4 Numerical results and discussion 145
7．5 Conclusions 152
References 153
Chapter 8 Evolution of multi pores in Ti-6Al-4V/Al-Si-10Mg alloy during laser
post-processing 157
8．1 Introduction 159
8．2 Experimental procedures 162
8．2．1 Sample preparation 162
8．2．2 Detection of porosity by mirco-CT 162
8．3 Model and simulation 165
8．3．1 Simulation model 165
8．3．2 Gaussian heat source 167
8．3．3 Latent heat of phase change 168
8．3．4 Level-set method 169
8．3．5 Boundary conditions 169
8．4 Numerical results and discussion 171
8．5 Conclusions 177
References 179
Chapter 9 Investigation of laser polishing of four Laser-based Powder Bed
Fusion alloy samples 182
9．1 Introduction 184
9．2 Model and theoretical calculation 188
9．2．1 Physical model and assumptions 188
9．2．2 Governing equations and boundary conditions 190
9．2．3 Simulation results 192
9．3 Experimental methods 195
9．3．1 Sample fabrication 195
9．3．2 Morphology observation by 3D optical profiler 198
9．3．3 Experimental results 199
9．4 Conclusions 206
References 208
1．1 Background 2
1．2 Motivation 3
1．3 Outline 4
Chapter 2 Investigation of the flow field in Laser-based Powder Bed Fusion
manufacturing 5
2．1 Introduction 7
2．2 Simulation model of the L-PBF printer 10
2．2．1 Problem description 10
2．2．2 Geometric model of the L-PBF printer 11
2．2．3 Numerical model of the L-PBF printer 12
2．3 Simulation results 16
2．3．1 Distribution of the flow field 16
2．3．2 Distribution of the temperature field 21
2．3．3 Distribution of spatter particles 23
2．4 Conclusions 28
References 30
Chapter 3 Investigation of optimizing the flow field with fluid cover in
Laser-based Powder Bed Fusion manufacturing process 33
3．1 Introduction 35
3．2 Simulation model of L-PBF printer 37
3．2．1 Geometry of L-PBF printer with a fluid stabilizing cover 37
3．2．2 Numerical model of printer with a fluid stabilizing cover 37
3．2．3 Mesh of L-PBF printer with a fluid stabilizing cover 39
3．2．4 Model of the fluid stabilizing cover and particles 40
3．3 Simulation results and discussion 43
3．3．1 Influence of the fluid stabilizing cover on the flow field 43
3．3．2 Influence of fluid stabilizing cover on particle distribution and removing rate 47
3．4 Summary and conclusions 51
References 53
Chapter 4 Numerical investigation of controlling spatters with negative pressure
pipe in Laser-based Powder Bed Fusion process 54
4．1 Introduction 56
4．2 Simulation model of L-PBF printer 59
4．2．1 Geometric model of L-PBF printer 59
4．2．2 Numerical model of L-PBF printer 61
4．3 Simulation results and discussions 64
4．3．1 Effect of pipe diameter 68
4．3．2 Effect of outlet flow rate 70
4．3．3 Effect of initial particle velocity 74
4．4 Summary and conclusions 76
References 78
Chapter 5 Evolution of molten pool during Laser-based Powder Bed Fusion of
Ti-6Al-4V 80
5．1 Introduction 82
5．2 Modeling approach and numerical simulation 85
5．2．1 Model establishing and assumptions 85
5．2．2 Governing equations 87
5．2．3 Heat source model 87
5．2．4 Phase change 88
5．2．5 Boundary conditions setup 89
5．2．6 Mesh generation 90
5．3 Experimental procedures 91
5．4 Results and discussions 92
5．4．1 Surface temperature distribution and morphology 92
5．4．2 Formation and solidification of the molten pool 94
5．4．3 Development of the evaporation region 98
5．5 Conclusions 101
References 103
Chapter 6 Simulation of surface deformation control during Laser-based
Powder Bed Fusion Al-Si-10Mg powder using an external magnetic field 107
6．1 Introduction 109
6．2 Modeling and simulation 112
6．2．1 Modeling of L-PBF 112
6．2．2 Mesh model and basic assumptions 113
6．2．3 Heat transfer conditions 114
6．2．4 Marangoni convection 115
6．2．5 Phase-change material 115
6．2．6 Lorentz force 116
6．3 Results 118
6．3．1 Velocity field in the molten pool 118
6．3．2 Lorentz force in the MP 121
6．3．3 Surface deformation of the sample 123
6．4 Conclusions 127
References 128
Chapter 7 Influence of laser post- processing on pore evolution of Ti-6Al-4V
alloy by Laser-based Powder Bed Fusion 131
7．1 Introduction 133
7．2 Experimental procedures 136
7．2．1 Sample fabrication 136
7．2．2 Determination of porosity by micro-CT 137
7．3 Modeling and simulation 140
7．3．1 Numerical model 140
7．3．2 Moving Gaussian heat source 143
7．3．3 Thermal boundary conditions 143
7．3．4 Marangoni effect， surface tension and recoil pressure 144
7．4 Numerical results and discussion 145
7．5 Conclusions 152
References 153
Chapter 8 Evolution of multi pores in Ti-6Al-4V/Al-Si-10Mg alloy during laser
post-processing 157
8．1 Introduction 159
8．2 Experimental procedures 162
8．2．1 Sample preparation 162
8．2．2 Detection of porosity by mirco-CT 162
8．3 Model and simulation 165
8．3．1 Simulation model 165
8．3．2 Gaussian heat source 167
8．3．3 Latent heat of phase change 168
8．3．4 Level-set method 169
8．3．5 Boundary conditions 169
8．4 Numerical results and discussion 171
8．5 Conclusions 177
References 179
Chapter 9 Investigation of laser polishing of four Laser-based Powder Bed
Fusion alloy samples 182
9．1 Introduction 184
9．2 Model and theoretical calculation 188
9．2．1 Physical model and assumptions 188
9．2．2 Governing equations and boundary conditions 190
9．2．3 Simulation results 192
9．3 Experimental methods 195
9．3．1 Sample fabrication 195
9．3．2 Morphology observation by 3D optical profiler 198
9．3．3 Experimental results 199
9．4 Conclusions 206
References 208
展開全部
基于流體力學的金屬增材制造過程仿真研究 作者簡介
李輝，中共黨員，教授、博導，湖北省特聘專家，***"青年****”入選者，國家重點研發計劃項目首席科學家，IEEE高級會員。于1995年至2002年就讀于華中科技大學機械科學與工程學院，獲得工學學士與碩士學位。作者于2002年獲得新加坡科研局博士獎學金，在新加坡國立大學(NUS)電子與計算機系和新加坡數據存儲研究所(DSI)進行博士學位的聯合培養，師從于新加坡數據存儲研究所高級研究科學家(Senior research scientist)劉波博士（國家"****”特聘專家，教育部長江學者講座教授）和新加坡國立大學電子與計算機工程系教授Chong Tow Chong（現任新加坡理工大學（SUTD）校長），并于2007年獲得工學博士學位。作者于2008年進入美國加州大學圣地亞哥分校(UCSD)從事博士后研究，師從于UCSD機械和科學工程學院前主席、磁記錄中心首席教授Frank E. Talke院士。作者于2005年至2013年就職于日立公司（Hitachi）亞洲研究與發展中心，其中于2006年在日立總部中央研究所交流半年，2008年起擔任研發中心項目領導及副經理。在新加坡、日本和美國長達11年的學習和科研工作經歷，主攻磁記錄硬盤可靠性研究，實現微機電系統的高精度定位控制設計和應用。作者主持完成與美國美國加州大學圣地亞哥分校，新加坡數據存儲研究所和日立日本本部的聯合科研項目7項。作者2012年入選國際電器與電子工程師學會（IEEE）高級會員，2013年入選***"青年****”，獲聘為武漢大學教授、博士生導師，2014年被授予湖北省特聘專家稱號。作者主要從事先進制造工藝過程、在線監測及產品可靠性等研究，發表SCI期刊論文80余篇、國際會議論文60余篇，在美國、新加坡、韓國做特邀報告4次。主編英文專著2部、中文專著1部，獲國家科學技術學術著作出版基金資助1次。提交/授權國家發明專利41項、授權軟件著作權3項。作者承擔科研項目包括國家自然科學基金委重大科研儀器研制項目（教育部唯一推薦）、國家重點研發計劃"增材制造與激光制造”重點專項、國家重點研發計劃"網絡協同制造和智能工廠”重點專項（首席）、JKW基礎加強項目、湖北省技術創新專項（重大項目）、廣東省重點領域研發計劃、四川省重點研發計劃、廣東省科技創新戰略專項資金自由申請項目、深圳市基礎研究計劃項目、深圳市協同創新計劃國際合作研究項目、華為公司技術咨詢報告等。
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