| 摘要 | 第1-6页 |
| Abstract | 第6-12页 |
| CHAPTER 1 INTRODUCTION | 第12-24页 |
| ·BACKGROUND | 第12-14页 |
| ·LITERATURE REVIEW | 第14-21页 |
| ·Research on thin-walled beams | 第15-18页 |
| ·Crashworthiness optimization | 第18-21页 |
| ·MOTIVATION AND OBJECTIVES | 第21-24页 |
| CHAPTER 2 SIMPLIFIED MODELING OF THIN-WALLED BOX SECTION BEAMS | 第24-38页 |
| ·INTRODUCTION | 第24页 |
| ·SIMPLIFIED MODELING OF STRAIGHT BEAMS | 第24-32页 |
| ·Detailed model | 第25-26页 |
| ·Collapse mechanisms of straight thin-walled beams | 第26-27页 |
| ·Nonlinear spring characteristics of axial deformation | 第27-29页 |
| ·Development of simplified model | 第29-30页 |
| ·Dynamic results and comparisons | 第30-32页 |
| ·SIMPLIFIED MODELING OF ROTATIONAL STRAIGHT BEAMS | 第32-37页 |
| ·Detailed model | 第32-33页 |
| ·Nonlinear rotational spring characteristics | 第33-35页 |
| ·Development of simplified model | 第35-36页 |
| ·Dynamic results and comparisons | 第36-37页 |
| ·CONCLUSIONS | 第37-38页 |
| CHAPTER 3 DERIVATION OF THE BENDING RESISTANCE FOR THIN-WALLED BEAMS WITH CHANNEL AND HEXAGONAL CROSS SECTIONS | 第38-62页 |
| ·INTRODUCTION | 第38页 |
| ·MULTI-AXIS BENDING OF CHANNEL SECTION BEAM AND MODELING | 第38-55页 |
| ·Inward bending | 第40-46页 |
| ·Outward bending | 第46-48页 |
| ·Simplified modeling | 第48-52页 |
| ·Results and comparisons | 第52-55页 |
| ·SIMPLIFIED MODELING OF CURVED HEXAGONAL BEAM | 第55-60页 |
| ·Detailed model | 第55-56页 |
| ·Non-linear spring characteristics | 第56-57页 |
| ·Simplified model | 第57-58页 |
| ·Results and comparisons | 第58-60页 |
| ·CONCLUSION | 第60-62页 |
| CHAPTER 4 DEVELOPMENT OF SIMPLIFIED AUTOBODY STRUCTURE FOR FRONTAL CRASHWORTHINESS ANALYSIS | 第62-78页 |
| ·INTRODUCTION | 第62页 |
| ·CHARACTERISTICS OF SIMPLIFIED MODEL | 第62-71页 |
| ·Initial BIW model | 第62-65页 |
| ·Approximation of crash box structure | 第65-68页 |
| ·Approximate of crush zone on the frontal rail | 第68-69页 |
| ·Approximate of curved frontal rail | 第69-71页 |
| ·CRASH ANALYSIS AND RESULTS | 第71-77页 |
| ·Simplified crash box structure | 第72-73页 |
| ·Simplified crush zone | 第73-74页 |
| ·Simplified curved frontal rail | 第74-77页 |
| ·CONCLUSIONS | 第77-78页 |
| CHAPTER 5 CRASHWORTHINESS OPTIMIZATION OF META-MODEL | 第78-95页 |
| ·INTRODUCTION | 第78-79页 |
| ·CONSTRUCTION OF META-MODEL BASED ON RSM | 第79-89页 |
| ·CRASHWORTHINESS OPTIMIZATION BASED ON META-MODEL | 第89-94页 |
| ·CONCLUSION | 第94-95页 |
| CHAPTER 6 SUMMARY AND FUTURE WORKS | 第95-97页 |
| ·SUMMARY | 第95-96页 |
| ·FUTURE WORKS | 第96-97页 |
| REFERENCES | 第97-104页 |
| INFORMATION OF AUTHOR’S RESEARCH | 第104-106页 |
| ACKNOWLEDGEMENTS | 第106页 |
