| ABSTRACT | 第5-6页 |
| RESEARCH PAPERS | 第7-8页 |
| ACKNOWLEDGEMENT | 第8-12页 |
| CHAPTER 1 INTRODUCTION | 第12-27页 |
| 1.1 MOTIVATION | 第12-13页 |
| 1.2 LITERATURE REVIEW | 第13-26页 |
| 1.3 OVERVIEW OF CONTRIBUTIONS | 第26-27页 |
| CHAPTER 2 THEORETICAL BACKGROUND | 第27-44页 |
| 2.1 INTRODUCTION | 第27-28页 |
| 2.2 ACOUSTIC FLUID FUNDAMENTALS | 第28-34页 |
| 2.3 ABSORPTION OF ACOUSTICAL PRESSURE WAVE | 第34-36页 |
| 2.4 ACOUSTICS FLUID-STRUCTURE COUPLING | 第36-37页 |
| 2.5 ACOUSTICS OUTPUT QUANTITIES | 第37-38页 |
| 2.6 BOUNDARY ELEMENT MODEL THEORY | 第38-43页 |
| 2.6.1 RADIATION EFFICIENCY | 第42页 |
| 2.6.2 INPUT POWER | 第42页 |
| 2.6.3 ACTIVE OUTPUT POWER | 第42-43页 |
| 2.6.4 MEAN QUADRATIC VELOCITY | 第43页 |
| 2.7 CONCLUSION | 第43-44页 |
| CHAPTER 3 EFFECT OF VARIOUS DESIGN FACTORS ON NOISE AND VIBRATIONOF SINGLE CYLINDER | 第44-61页 |
| 3.1 INTRODUCTION | 第44-45页 |
| 3.2 NUMERICAL SIMULATION | 第45-46页 |
| 3.3 MODELING OF THE FLUID | 第46-47页 |
| 3.4 EFFECT OF NUMBER OF STIFFENERS | 第47-51页 |
| 3.4.1 ANALYSIS OF VIBRATION CHARCTERISTICS | 第47-48页 |
| 3.4.2 ANALYSIS OF NOISE CHARCTERISTICS | 第48-50页 |
| 3.4.3 ANALYSIS OF DIRECTIVITY OF SOUND PRESSURE LEVEL | 第50-51页 |
| 3.5 EFFECT OF THICKNESS OF STIFFENERS | 第51-57页 |
| 3.5.1 ANALYSIS OF VIBRATION CHARACTERISTICS | 第52页 |
| 3.5.2 ANALYSIS OF NOISE CHARCTERISTICS | 第52-54页 |
| 3.5.3 ANALYSIS OF DIRECTIVITY OF SOUND PRESSURE LEVEL | 第54-57页 |
| 3.6 EFFECT OF DIRECTION OF FORCE | 第57-60页 |
| 3.6.1 ANALYSIS OF VIBRATION CHARCTERISTICS | 第57-58页 |
| 3.6.2 ANALYSIS OF NOISE CHARCTERISTICS | 第58-60页 |
| 3.7 CONCLUSION | 第60-61页 |
| CHAPTER 4 EFFECT OF VARIOUS DESIGN FACTORS ON NOISE AND VIBRATIONOF DOUBLE CYLINDER | 第61-92页 |
| 4.1 INTRODUCTION | 第61页 |
| 4.2 MODELLING OF DOUBLE CYLINDER | 第61-63页 |
| 4.3 COMPARSION OF ACOUSTIC CHRACTERISTICS OF SINGLE AND DOUBLE CYLINDER | 第63-69页 |
| 4.3.1 ANALYSIS OF VIBRATION CHARACTERISTICS | 第64-65页 |
| 4.3.2 ANALYSIS OF NOISE CHARCTERISTICS | 第65-67页 |
| 4.3.3 DIRECTIVITY ANALYSIS OF SOUND PRESSURE LEVEL | 第67-69页 |
| 4.4 EFFECT OF CONNECTIONS | 第69-74页 |
| 4.4.1 ANALYSIS OF VIBRATION CHARCTERISTICS | 第69-70页 |
| 4.4.2 ANALYSIS OF NOISE CHARCTERISTICS | 第70-72页 |
| 4.4.3 DIRECTIVITY ANALYSIS OF SOUND PRESSURE LEVEL | 第72-74页 |
| 4.5 EFFECT OF THICKNESS OF OUTER CYLINDER | 第74-79页 |
| 4.5.1 ANALYSIS OF VIBRATION CHARACTERISTICS | 第75页 |
| 4.5.2 ANALYSIS OF NOISE CHARCTERISTICS | 第75-76页 |
| 4.5.3 DIRECTIVITY ANALYSIS OF SOUND PRESSURE LEVEL | 第76-79页 |
| 4.6 EFFECT OF POSITIONING OF PROPULSION MACHINERY | 第79-82页 |
| 4.7 EFFECT OF THE RADIUS OF THE OUTER CYLINDER | 第82-87页 |
| 4.7.1 ANALYSIS OF VIBRATION CHARCTERISTICS | 第82页 |
| 4.7.2 ANALYSIS OF NOISE CHARACTERISTCS | 第82-85页 |
| 4.7.3 DIRECTIVITY ANALYSIS OF SOUND PRESSURE LEVEL | 第85-87页 |
| 4.8 EFFECT OF THICKNESS OF INNER SHELL | 第87-91页 |
| 4.8.1 ANALYSIS OF VIBRATION CHARACTERISTICS | 第87-88页 |
| 4.8.2 ANALYSIS OF NOISE CHARCTERISTICS | 第88-89页 |
| 4.8.3 DIRECTIVITY ANALYSIS OF SOUND PRESSURE LEVEL | 第89-91页 |
| 4.10 CONCLUSION | 第91-92页 |
| CHAPTER 5 NUMERICAL AND EXPERIMENTAL RESULTS COMPARISON | 第92-103页 |
| 5.1 USE OF DAMPING MATERIAL | 第92-97页 |
| 5.1.1 INTRODUCTION | 第92-93页 |
| 5.1.2 MODELING OF DAMPING MATERIAL | 第93-94页 |
| 5.1.3 ANALYSIS OF THE EFFECTS OF DAMPING MATERIAL | 第94-97页 |
| 5.2 COMPARISON OF FEM/BEM AND EXPERIMENTAL RESULTS | 第97-102页 |
| 5.2.1 EXPERIMENTAL FACILTIES AND EQUIPMENTS | 第98-100页 |
| 5.2.2 ANALYSIS OF THE RESULTS | 第100-102页 |
| 5.3 CONCLUSIONS | 第102-103页 |
| CHAPTER 6 CONCLUSIONS AND RECOMMENDATIONS | 第103-106页 |
| 6.1 CONCLUSION | 第103-104页 |
| 6.2 RECOMMENDATIONS FOR FUTURE WORK | 第104-106页 |
| REFERENCES | 第106-110页 |
