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航空发动机涡轮盘疲劳-蠕变寿命可靠性分析

摘要第3-4页
Abstract第4页
1 Introduction第8-16页
    1.1 Research background and significance第8页
    1.2 Domestic and oversea progress第8-14页
        1.2.1 Research status of turbine disk creep life analysis第8-13页
            1.2.1.1 Research status of fatigue life analysis第8-12页
            1.2.1.2 Research status of creep life analysis第12-13页
            1.2.1.3 Research status of fatigue-creep life analysis第13页
        1.2.2 Research status of turbine disk reliability analysis第13-14页
    1.3 Major content and methodology of dissertation第14-16页
2 Models for low cycle fatigue creep prediction第16-24页
    2.1 Introduction第16页
    2.2 Fatigue creep life prediction method第16-24页
        2.2.1 Linear damage summation第19页
        2.2.2 Strain range partition第19-20页
        2.2.3 Frequency modified approach第20-21页
        2.2.4 Damage function method第21页
            2.2.4.1 Time-dependent damage is independent of wave-shape第21页
            2.2.4.2 Time-dependent damage is dependent on wave shape第21页
        2.2.5 Damage rate approach第21-22页
        2.2.6 Damage parameter approach第22-24页
3 Aircraft turbine disk low cycle life fatigue creep assessment第24-32页
    3.1 Fatigue life damage estimation第24页
    3.2 Creep life damage estimation第24-30页
        3.2.1 Estimation of Larson miller Parameters using Bayesian Interference第25-27页
        3.2.2 Larson Miller Model第27-30页
    3.3 Fatigue-Creep life第30-32页
4 Finite element analysis of aircraft turbine disk第32-52页
    4.1 Stress-Strain analysis of aircraft turbine disk第33-41页
        4.1.1 Finite element elastoplastic analysis fundamentals第33-35页
            4.1.1.1 Yield criteria第33页
            4.1.1.2 Hardening conditions第33-34页
            4.1.1.3 Flow criteria第34-35页
        4.1.2 finite element analysis of stress and strain for turbine disk第35-39页
            4.1.2.1 Displacement element function第35-36页
            4.1.2.2 Geometry equation第36-38页
            4.1.2.3 Element stiffness matrix and stress , strain relations第38-39页
        4.1.3 Creep and plastic incrimental constitutive equations第39-41页
            4.1.3.1 Creep Strain第39-40页
            4.1.2.2 Creep models第40-41页
    4.2 Turbine disk structure第41-46页
        4.2.1 Meshing第42-43页
        4.2.2 Turbine disk material parameters第43-45页
        4.2.3 Creep characteristics第45-46页
            4.2.3.1 Time第45页
            4.1.2.2 Temperature第45页
            4.2.3.3 Stress第45-46页
    4.3 Turbine disc load and boundary condition第46-49页
        4.3.1 Centrifugal load第46-48页
        4.3.2 Temperature load第48页
        4.3.3 Boundary condition第48-49页
    4.4 Finite element results of aircraft turbine disk第49-52页
5 Aircraft turbine disk fatigue creep reliability assessment第52-62页
    5.1 Introduction to Reliability第53-56页
        5.1.1 Reliability indices第54-56页
            5.1.1.1 Probability density function (PDF)第54页
            5.1.1.2 Cumulative distribution function (CDF)第54页
            5.1.1.3 Reliability function第54-55页
            5.1.1.4 Failure rate第55页
            5.1.1.5 Maint time to failure第55页
            5.1.1.6 Mean residual life (MRL)第55-56页
        5.1.2 Failure Distribution Functions第56页
    5.2 Weibull distribution第56-58页
        5.2.1 Weibull parameter estimation第57-58页
            5.2.1.1 Maximum Likelihood Estimator第57-58页
    5.3 Monte Carlo Method第58-60页
    5.4 Probability analysis of aircraft turbine fatigue creep life第60-62页
        5.4.1 Reliability estimation第60-62页
Conclusion第62-64页
References第64-69页
Research Projects and Publications in Master Study第69-70页
Acknowledgement第70-72页

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