| 摘要 | 第6-8页 |
| Abstract | 第8-10页 |
| Chapter 1 Introduction | 第11-18页 |
| 1.1 The application field of laser | 第11-12页 |
| 1.2 Theoretical research and numerical simulation of laser heat treatment temperature field | 第12-14页 |
| 1.2.1 The complexity of laser heat treatment procedure | 第12-13页 |
| 1.2.2 The general situation of theoretical and numerical development of laser heat treatment temperature field | 第13页 |
| 1.2.3 The application of FEM (Finite Element Methods) in laser heat treatment temperature field research | 第13-14页 |
| 1.2.4 The application of semi-analytic calculation method in laser heat treatment temperature field research | 第14页 |
| 1.3 The experimental verification methods of laser heat treatment temperature field simulation | 第14-15页 |
| 1.3.1 The necessity of experimental verification | 第14页 |
| 1.3.2 The theoretical basis of experimental verification of numerical calculation | 第14-15页 |
| 1.4 The main research of the thesis | 第15-16页 |
| 1.5 The expectation of laser heat treatment process simulation | 第16-18页 |
| Chapter 2 Experiment measurement of laser heat treatment numerical simulation corresponding parameters | 第18-42页 |
| 2.1 Experiment measurement of laser energy density distribution | 第18-21页 |
| 2.1.1 The essentiality of the measurement of power density distribution | 第18-19页 |
| 2.1.2 The different definitions of laser beam radius | 第19-20页 |
| 2.1.3 The discussion of laser beam radius and beam bundle width | 第20页 |
| 2.1.4 the approximate of laser beam by TEM00+TEM01 | 第20-21页 |
| 2.2 Obsolete laser beam measurement method | 第21-23页 |
| 2.3 Experimental measurement of laser energy density distribution | 第23-26页 |
| 2.3.1 Experimental setup | 第24页 |
| 2.3.2 The experiment measurement of YAG laser beam energy distribution | 第24页 |
| 2.3.3 The experiment measurement of Diode laser beam energy distribution | 第24-25页 |
| 2.3.4 The experiment measurement of CO_2 laser beam energy distribution | 第25-26页 |
| 2.4 The experiment measurement of laser material energy absorption coefficient | 第26-37页 |
| 2.4.1 The definition of laser material energy absorption coefficient | 第26页 |
| 2.4.2 The traditional laser material energy absorption coefficient measurement methods | 第26-27页 |
| 2.4.3 Laser material energy absorption coefficient measurement by calorimeter | 第27-37页 |
| 2.4.3.1 The measurement principle of absorption coefficient of a material | 第28-30页 |
| 2.4.3.2 The calibration of laser power output | 第30-33页 |
| 2.4.3.3 Laser material energy absorption coefficient measurement by calorimeter | 第33-37页 |
| 2.5 The experimental measurement and theoretical prediction of laser material absorption coefficient | 第37-41页 |
| 2.5.1 Experimental verification of the predication laser material absorption coefficient | 第38-39页 |
| 2.5.2 Analysis of experiment results | 第39-40页 |
| 2.5.3 conclusions | 第40-41页 |
| CONCLUSION | 第41-42页 |
| Chapter 3 The numerical simulation of laser heat treatment temperature field on the condition of quenching by FEM | 第42-66页 |
| 3.1 Overview of the finite element method | 第42-44页 |
| 3.1.1 Local approximations | 第42页 |
| 3.1.2 Calculation of the nodal values | 第42-43页 |
| 3.1.3 Assembly and sub-assembly | 第43-44页 |
| 3.1.4 Boundary conditions | 第44页 |
| 3.2 The numerical simulation of steady state three-dimensional temperature field of laser heat treatment | 第44-50页 |
| 3.2.1 Introduction | 第44-45页 |
| 3.2.2 Theoretical model | 第45-50页 |
| 3.2.2.1 The basis hypothesizes | 第45-46页 |
| 3.2.2.2 Thermal conductive equation | 第46-48页 |
| 3.2.2.3 The deduce of internal boundary conditions for three-dimensions | 第48-50页 |
| 3.3 The numerical simulation of three-dimensional transient temperature field of laser heat treatment | 第50-51页 |
| 3.4 The experiment verification of three-dimensional temperature field | 第51-65页 |
| 3.4.1 the experiment verification of steady-state three-dimensional temperature field simulation | 第51-62页 |
| 3.4.2 the experiment verification of three-dimensional transient temperature field simulation | 第62-65页 |
| CONCLUSION | 第65-66页 |
| Chapter 4 The Semi-analytic calculation about laser material interaction on the condition of quenching | 第66-79页 |
| 4.1 Heat conduction equation and analytic solution | 第66-73页 |
| 4.1.0 Introduction | 第66页 |
| 4.1.1 Heat conduction equation | 第66-69页 |
| 4.1.2 A semi-analytic calculation method of steady-state temperature field in an infinite medium | 第69-71页 |
| 4.1.3 A semi-analytic calculation method of steady-state temperature field on in an half-infinite medium treatment | 第71-73页 |
| 4.2 Rapid approximate calculation on the transient temperature field of laser heat treatment | 第73-78页 |
| 4.2.1 Deduction of the essential calculation formulas | 第73-75页 |
| 4.2.2 Quick approximate calculation on the transient temperature field of laser heat treatment | 第75-76页 |
| 4.2.3 Quick approximate calculation on the steady state temperature field of laser heat treatment | 第76-78页 |
| CONCLUSION | 第78-79页 |
| Chapter 5 Experimental research of optical capability and relative heat effect of a high-power integrating transformation mirror | 第79-91页 |
| 5.1 The essentiality of research task | 第79-80页 |
| 5.2 The optical capability research of integrating reflecting mirror | 第80-83页 |
| 5.3 The optical experimental study of integrating transformation mirror and its simulation | 第83-86页 |
| 5.4 The experiment research of relative heat effect of integrating transformation mirror | 第86-90页 |
| 5.4.1 The arbitrary laser energy distribution heat effect temperature field calculation formulas | 第86-87页 |
| 5.4.2 Experiment setup and calculation comparison | 第87-88页 |
| 5.4.3 discussion and conclusion | 第88-90页 |
| CONCLUSION | 第90-91页 |
| Chapter6 The experimental verification of semi-analytic calculation and fast-calculation about boundary conditions | 第91-109页 |
| 6.1 Certain thickness flat boundary problem | 第91-93页 |
| 6.2 Orthogonal boundary test workpiece temperature field calculation | 第93-94页 |
| 6.3 Semi-analytic calculation about transient temperature field of laser heat treatment to workpiece of non-cross-cut boundary | 第94-100页 |
| 6.3.1 Introduction | 第94-95页 |
| 6.3.2 Theoretical study | 第95-100页 |
| 6.4 Comparison between experimental and theoretical results, model validation | 第100-104页 |
| 6.5 FEM calculation about transient temperature field of laser heat treatment to workpiece of non-cross-cut boundary | 第104-108页 |
| CONCLUSION | 第108-109页 |
| REFERENCE | 第109-113页 |
| Publications | 第113-114页 |
| ACKNOWLEDGEMENTS | 第114页 |
