基于ABS和DNV規(guī)范的某風(fēng)電安裝船屈服強(qiáng)度和屈曲強(qiáng)度有限元分析
基于ABS和DNV規(guī)范的某風(fēng)電安裝船屈服強(qiáng)度和屈曲強(qiáng)度有限元分析【摘要】:由于計(jì)算機(jī)軟硬件技術(shù)的飛速發(fā)展,船舶設(shè)計(jì)的趨勢(shì)正在發(fā)生變化,從原來(lái)的基于規(guī)范設(shè)計(jì)向基于結(jié)構(gòu)分析的設(shè)計(jì)轉(zhuǎn)變。
【學(xué)位授予單位】:哈爾濱工程大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2012
【分類號(hào)】:U674.37
【目錄】:
- ABSTRACT5-6
- 摘要6-10
- 1 CHAPTER 1 INTRODUCTION10-22
- 1.1 What is OWTIS10
- 1.2 Purpose and Significance of Current Research Work10-11
- 1.3 Marine Structural Design Approaches11-12
- 1.3.1 Design by Rules11
- 1.3.2 Design by Analysis11-12
- 1.3.3 Design by Performance Standards12
- 1.4 Design Approaches used in the Current Work12-13
- 1.5 Yielding and Buckling Strength13-15
- 1.6 Literature Survey15-20
- 1.7 Objectives and Scope of Current Work20-21
- 1.8 Organization of the Thesis Report21-22
- 2 CHAPTER 2 SHIP LOADS AND ANALYSIS TYPES22-34
- 2.1 Classification of Loads22-23
- 2.1.1 General Description22-23
- 2.2 Environmental Loading Consideration23-28
- 2.2.1 Wind Forces23-24
- 2.2.2 Current Forces24
- 2.2.3 Wave Loads24-26
- 2.2.4 Diffraction Theory26-27
- 2.2.5 The Wave Force Equation (WFE)27-28
- 2.3 Ship Structure Analysis Techniques28-29
- 2.4 Rules laid down by classification societies29-30
- 2.5 Finite element Analysis (FEA)30-34
- 2.5.1 Types of Finite Element Analysis Performed31
- 2.5.2 Yielding Strength Analysis31-32
- 2.5.3 Yielding Strength Criteria32-33
- 2.5.4 Buckling Strength Analysis33
- 2.5.5 Buckling Strength Criteria33-34
- 3 CHAPTER 3 SHIP STRUCTURE STRENGTH34-68
- 3.1 Introduction34
- 3.2 Modes of Failure34-35
- 3.3 Ship Structural Stresses35-39
- 3.3.1 Stresses under Static Loading in Still Water35-39
- 3.4 Hull Girder Stress39-40
- 3.4.1 Primary Direct Stress39-40
- 3.4.2 Instability Issues40
- 3.5 Finite Element Analysis40-51
- 3.5.1 Development of Finite Element Shell Model of the Ship41-48
- 3.5.2 Selection of Suitable Elements Types48-49
- 3.5.3 Boundary Conditions49-51
- 3.6 Loads Calculations51
- 3.7 ABS Rule Load Calculations51-62
- 3.7.1 Hull Girder Loads Calculation51-52
- 3.7.2 Still Water Loads52
- 3.7.3 Wave Induced Loads52-53
- 3.7.4 External Pressure Calculations53-62
- 3.8 DNV Rule Load Calculations62-64
- 3.8.1 Hull Girder Loads Calculation62
- 3.8.2 Still Water Loads62
- 3.8.3 Wave Induced Loads62-63
- 3.8.4 External Pressure Calculations63-64
- 3.9 Internal Pressure Calculations ABS & DNV Rules (Ballast/Fuel/Fresh Water/Waste Water etc Tanks)64-65
- 3.10 Deck Loads (ABS & DNV Rules)65-66
- 3.11 Crane Loads (ABS & DNV Rules)66
- 3.12 Load Cases Application66-68
- 4 CHAPTER 4 ANALYSIS & RESULTS68-118
- 4.1 Introduction68
- 4.2 OWTIS Specifications68
- 4.3 General Arrangement, Lines Plan68-69
- 4.4 3D Shell Model Generation69-70
- 4.5 Application of Loads70-77
- 4.5.1 Application of External Sea Pressures70-74
- 4.5.2 Application of Internal Tank Pressures74-75
- 4.5.3 Application of Crane Loads75
- 4.5.4 Application of Decks Loads75-77
- 4.6 Analysis as per ABS Rules77-107
- 4.6.1 Load Case ABS 9.5 PH1 (Pure Sagging)77-80
- 4.6.2 Load Case ABS 9.5 PH2 (Pure Hogging)80-82
- 4.6.3 Load Case ABS 9.5 PF1 (Sagging)82-85
- 4.6.4 Load Case ABS 9.5 PF2 (Hogging)85-88
- 4.6.5 Load Case ABS 9.5 PR1 (Maximum Roll)88-90
- 4.6.6 Load Case ABS 9.5 PR2 (Maximum Roll)90-92
- 4.6.7 Load Case ABS 9.5 PP1 (Maximum External Pressure)92-95
- 4.6.8 Load Case ABS 9.5 PP2 (Maximum External Pressure)95-97
- 4.6.9 Load Case ABS 4.5 PH1 (Pure Sagging)97-98
- 4.6.10 Load Case ABS 4.5 PH2 (Pure Hogging)98-100
- 4.6.11 Load Case ABS 4.5 PF1 (Sagging)100-101
- 4.6.12 Load Case ABS 4.5 PF2 (Hogging)101-102
- 4.6.13 Load Case ABS 4.5 PR1 (Maximum Roll)102-103
- 4.6.14 Load Case ABS 4.5 PR2 (Maximum Roll)103-105
- 4.6.15 Load Case ABS 4.5 PP1 (Maximum External Pressure)105-106
- 4.6.16 Load Case ABS 4.5 PP2 (Maximum External Pressure)106-107
- 4.7 Analysis as per DNV Rules107-112
- 4.7.1 Load Case DNV 9.5 (Full Load Condition)107-109
- 4.7.2 Load Case DNV 4.5 (Normal Ballast Condition)109-112
- 4.8 Results112-113
- 4.9 Determination of Critical Rule Stresses113-116
- 4.9.1 Determination of Allowable Yielding Stresses from ABS Rules113
- 4.9.2 Determination of Allowable Yielding Stresses from DNV Rules113
- 4.9.3 Determination of Allowable Buckling Stress using ABS Rules113-115
- 4.9.4 Determination of Allowable Buckling Stress using DNV Rules115-116
- 4.10 Comparison116-118
- 4.10.1 Comparison of FEA and Critical Stresses as per ABS Rules116-117
- 4.10.2 Comparison of FEA and Critical Stresses as per DNV Rules117
- 4.10.3 Conclusion117-118
- ConCLUDING REMARKS AND FUTURERECOMMENDATIONS118-120
- Concluding Remarks118
- Recommendations for Future Work118-120
- REFERENCES120-124
- ACKNOWLEDGEMENTS124
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