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航空用复合材料层板冲击损伤特性模拟研

ABSTRACT第8页
摘要第9-17页
CHAPTER 1 INTRODUCTION AND LITERATURE REVIEW第17-47页
    1.1 INTRODUCTION第17-18页
    1.2 LITERATURE REVIEW第18-45页
        1.2.1 High-velocity Impact第19页
        1.2.2 Low-velocity Impact第19-20页
        1.2.3 Techniques for Impact Damage Analysis of Composite Structures第20-45页
            1.2.3.1 Analytical Approach第20-26页
            1.2.3.2 Experimental Test第26-34页
            1.2.3.3 Finite Element Method第34-44页
            1.2.3.4 Literature Summary of Impact Damage Analysis第44-45页
    1.3 RESEARCH OBJECTIVES第45-46页
    1.4 DISSERTATION OUTLINE第46-47页
CHAPTER 2 FAILURE CRITERIA IN COMPOSITE LAMINATES第47-69页
    2.1 INTRODUCTION第47页
    2.2 FAILURE THEORIES IN COMPOSITE LAMINATES第47-60页
        2.2.1 Maximum stress theory第48-49页
        2.2.2 Maximum Strain Failure Theory第49-50页
        2.2.3 Tsai-Hill Failure Theory第50-52页
        2.2.4 Tsai-Wu Failure Theory第52-56页
        2.2.5 Azzi-Tsai-Hill Theory第56-57页
        2.2.6 Puck Failure Criterion第57-58页
        2.2.7 Hashin Failure Criteria第58-60页
    2.3 CONSTITUTIVE EQUATIONS第60-66页
        2.3.1 In-plane Engineering Constants of Composite Laminate第61-64页
        2.3.2 Flexural Engineering Constants of Composite Laminate第64页
        2.3.3 Composite Laminate Hygrothermal Stresses and Strains第64-66页
    2.4 SUMMARY第66-69页
CHAPTER 3 COMPARISON OF BALLISTIC IMPACT BEHAVIOUR OF CARBON FIBER/EPOXY COMPOSITE AND STAINLESS STEEL STRUCTURES第69-85页
    3.1 INTRODUCTION第69-71页
    3.2 DAMAGE MODEL FORMULATIONS第71-74页
        3.2.1 Failure Model of Composite Laminate第71-72页
        3.2.2 Material Degradation of Composite Laminate第72-73页
        3.2.3 Damage Model of Stainless Steel第73-74页
    3.3 NUMERICAL TECHNIQUE第74-76页
        3.3.1 Structural Parameters and Boundary Conditions第74页
        3.3.2 Mesh Sensitivity and Element Deletion第74-75页
        3.3.3 Interaction Definition and Properties of Materials第75页
        3.3.4 Simulation Process第75-76页
    3.4 RESULTS AND DISCUSSION第76-84页
        3.4.1 Validation of the Model第76-79页
        3.4.2 Velocity-time History第79-80页
        3.4.3 Energy Distribution Portfolio第80-81页
        3.4.4 Damage Mechanisms of the Target Plates第81-84页
    3.5 SUMMARY第84-85页
CHAPTER 4 DAMAGE INDUCED BY HIGH VELOCITY IMPACT ON COMPOSITE STRUCTURES USING FINITE ELEMENT SIMULATION第85-103页
    4.1 INTRODUCTION第85-86页
    4.2 CONSTITUTIVE DAMAGE MODEL第86-90页
        4.2.1 Rate Dependent Constitutive Models第86-88页
        4.2.2 Material Degradation and Cohesive Elements第88-89页
        4.2.3 Failure Formulations第89-90页
    4.3 FINITE ELEMENT MODEL第90-92页
        4.3.1 Geometry and Validation of the Model第90-91页
        4.3.2 Numerical Modelling and Boundary Conditions第91页
        4.3.3 Element Type and Mesh第91-92页
        4.3.4 Contact Algorithm第92页
    4.4 RESULTS AND DISCUSSION第92-102页
        4.4.1 Failure Behaviour of Kevlar/epoxy Composite Laminate第93页
        4.4.2 Measurement of Velocity第93-95页
        4.4.3 Extent of Damage on the Composite Plate第95-97页
        4.4.4 Damage Response of the Laminate Thickness第97-100页
        4.4.5 Damage Response of the Ply Angle第100-102页
    4.5 SUMMARY第102-103页
CHAPTER 5 MODELING OF DAMAGE DEVELOPMENT IN CROSS-PLY COMPOSITE LAMINATES SUBJECTED TO LOW VELOCITY IMPACT第103-123页
    5.1 INTRODUCTION第103-105页
    5.2 DAMAGE MODELS AND FORMULATIONS第105-108页
        5.2.1 Intra-laminar Damage第105-106页
            5.2.1.1 Damage Initiation Criterion第105页
            5.2.1.2 Damage Evolution Law第105-106页
        5.2.2 Inter-laminar Damage第106-108页
    5.3.FINITE ELEMENT MODELING OF LOW VELOCITY IMPACT第108-112页
        5.3.1 Finite Element Model and Boundary Conditions第108-109页
        5.3.2 Contact Definition and Material Properties第109-110页
        5.3.3 Numerical Analysis Process第110-112页
    5.4 RESULTS AND DISCUSSION第112-121页
        5.4.1 Validation of numerical model第112-115页
        5.4.2 Simulation of Low Velocity Impact Process第115-117页
        5.4.3 Analysis of Damage Modes第117-119页
        5.4.4 Analysis of Delamination Inhibition Response第119-121页
    5.5 SUMMARY第121-123页
CHAPTER 6 DAMAGE INDUCED PREDICTION IN COMPOSITE LAMINATES AT LOW VELOCITY LOADING CONDITION第123-149页
    6.1 INTRODUCTION第123-125页
    6.2 DAMAGE CONSTITUTIVE MODEL FORMULATIONS第125-126页
        6.2.1 Intra-laminar Damage第125页
        6.2.2 Inter-laminar Damage第125-126页
            6.2.2.1 Damage Criterion第125-126页
            6.2.2.2 Damage Evolution第126页
    6.3 DEVELOPMENT OF FINITE ELEMENT FRAMEWORK第126-131页
        6.3.1 Numerical Modelling of E-glass Composite Laminate第126-128页
        6.3.2 Numerical Modelling of Reinforced S-glass Composite Laminate第128-131页
    6.4 RESULTS AND DISCUSSION第131-146页
        6.4.1 E-glass Composite Laminate第131-139页
            6.4.1.1 Validation of E-glass Composite Laminate第131-134页
            6.4.1.2 Structural Damage Responses in E-glass Composite Laminate第134-139页
                6.4.1.2.1 Analysis of intra-laminar damage第134-135页
                6.4.1.2.2 Analysis of inter-laminar damage第135-136页
                6.4.1.2.3 Analysis of stress failure contours第136-139页
        6.4.2 Reinforced S-glass Composite Laminate第139-146页
            6.4.2.1 Validation of Reinforced S-glass Composite Laminate第139页
            6.4.2.2 Damage Induced Analysis of Reinforced S-glass Composite Laminate第139-146页
                6.4.2.2.1 Comparison of inter-laminar damage with different impactors第139-141页
                6.4.2.2.2 Comparison of intra-laminar damage with different impactors第141-144页
                6.4.2.2.3 Comparison of stress distribution with different impactors第144-146页
    6.5 SUMMARY第146-149页
CHAPTER 7 CONCLUSIONS AND RECOMMENDATIONS第149-155页
    7.1 CONCLUSIONS第149-153页
        7.1.1 Comparison of Ballistic Impact Behavior of Carbon Fiber/epoxy Composite and Stainless Steel Structures第149-150页
        7.1.2 Damage Induced by High Velocity Impact on Composite Structures第150页
        7.1.3 Modeling of Damage Development in Cross-ply Composite Laminates Subjected to Low Velocity Impact第150-151页
        7.1.4 Damage Induced Prediction in Composite Laminates at Low Velocity Loading Condition第151-153页
    7.2 NOVEL CONTRIBUTIONS第153页
    7.3 FURTHER WORK第153-155页
REFERENCES第155-181页
ACKNOWLEDGEMENTS第181-182页
PUBLICATIONS第182-184页

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