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干摩擦诱发自激振动系统的非光滑动力学特性研究

ABSTRACT第4-5页
摘要第6-22页
NOMENCLATURE第22-25页
1 Introduction第25-48页
    1.1 Friction in general第25-26页
    1.2 Mechanisms of Friction-induced vibration第26-30页
        1.2.1 Negative friction-velocity slope第26-27页
        1.2.2 Stick-slip instability第27-28页
        1.2.3 Mode-coupling instability第28-29页
        1.2.4 Sprag-slip instability第29页
        1.2.5 Other mechanisms第29-30页
    1.3 Mechanical models第30-34页
        1.3.1 Low-degree-of-freedom models第30-32页
        1.3.2 Continuous models第32-33页
        1.3.3 Finite element models第33-34页
    1.4 Nonlinearity in frictional systems第34-43页
        1.4.1 Terminology of the non-smooth system第34-35页
        1.4.2 Nonlinear nature of friction第35-41页
        1.4.3 Nonlinear contact stiffness第41-42页
        1.4.4 Change of contact due to dynamics第42-43页
    1.5 Analysis methods第43-45页
        1.5.1 Complex eigenvalue analysis (CEA)第43-44页
        1.5.2 Transient dynamic analysis (TDA)第44-45页
    1.6 Model reduction第45-46页
        1.6.1 Techniques第45页
        1.6.2 Applications in friction-induced vibration第45-46页
    1.7 Thesis structure第46-48页
2 Basic Theories of Friction-induced Vibration and Transient Dynamic AnalysisAlgorithm for Non-smooth Vibration第48-70页
    2.1 Introduction第48页
    2.2 Mechanisms of friction-induced vibration第48-58页
        2.2.1 Negative friction-velocity slope第48-50页
        2.2.2 Stick-slip vibration第50-54页
        2.2.3 Mode-coupling instability第54-57页
        2.2.4 Sprag-slip instability第57-58页
    2.3 Fundamental theory of the discrete system and the elastic plate第58-66页
        2.3.1 Vibration of discrete systems with dry friction第58-62页
        2.3.2 Fundamental theory of an elastic annular plate第62-66页
    2.4 Transient dynamic analysis method for non-smooth vibration第66-69页
        2.4.1 Runge-Kutta method for a second order differential equation第66-67页
        2.4.2 Numerical iteration process for non-smooth problems第67-69页
    2.5 Conclusions第69-70页
3 Nonlinear Friction-induced Vibration of a Slider-belt Model第70-105页
    3.1 Introduction第70-71页
    3.2 Theoretical formulations第71-74页
        3.2.1 The mechanical model第71-72页
        3.2.2 Equation of motion in friction contact第72-73页
        3.2.3 Separation and reattachment第73-74页
    3.3 Complex eigenvalue analysis of the nonlinear frictional system第74-83页
        3.3.1 Equilibrium points第74-76页
        3.3.2 Eigenvalue analysis of the system at the equilibrium point第76-83页
    3.4 Modal analysis of the system during separation第83页
    3.5 Nonlinear transient dynamic analysis (TDA)第83-91页
        3.5.1 Procedure of the numerical simulation第84页
        3.5.2 Vibration of the stable system第84-86页
        3.5.3 Separation during vibration第86-87页
        3.5.4 Effects of separation on the amplitudes第87-91页
    3.6 Comparisons of vibration frequencies of TDA and CEA第91-96页
        3.6.1 Frequencies of the stable vibration第92页
        3.6.2 Frequencies of the unstable vibration第92-96页
    3.7 Nonlinear vibration involving Coulomb's law of friction第96-104页
        3.7.1 Case 1: μ_k<μ_s<μ_c第97-100页
        3.7.2 Case 2: μ_k<μ_c<μ_s第100-102页
        3.7.3 Case 3: μ_c<μ_k<μ_s第102-104页
    3.8 Conclusions第104-105页
4 Friction-induced Vibration of an Elastic Disc and a Moving Slider with Separationand Reattachment第105-140页
    4.1 Introduction第105-106页
    4.2 Disc model and theoretical development第106-113页
        4.2.1 In-plane stick-slip motion of the slider第106-108页
        4.2.2 Transverse vibration of the disc第108-109页
        4.2.3 Coupled equations of motion of the whole system in modal coordinates第109-111页
        4.2.4 Separation and reattachment第111-113页
    4.3 Modal analysis第113-115页
        4.3.1 Natural frequencies of the plate第113-114页
        4.3.2 Natural frequencies of the whole system第114-115页
    4.4 Validation of the numerical method第115-116页
    4.5 Numerical study第116-132页
        4.5.1 Numerical procedure第116-118页
        4.5.2 Separation during vibration第118-119页
        4.5.3 The critical speed for separation第119-122页
        4.5.4 Influences of separation第122-126页
        4.5.5 Influences of significant parameters第126-132页
    4.6 Nonstationary dynamic behaviour第132-137页
    4.7 Conclusions第137-140页
5 Model Reduction of a Multi-degree-of-freedom Frictional System with ExperimentalValidation第140-174页
    5.1 Introduction第140-141页
    5.2 Theoretical formulations of the reduction strategy for the frictional system第141-145页
        5.2.1 Definitions of the contact force and the friction force第142-143页
        5.2.2 Mode synthesis strategy第143-145页
    5.3 Applications to a 9-degree-of-freedom model第145-161页
        5.3.1 Introduction of the 9-degree-of-freedom model第145-146页
        5.3.2 Equation of motion of the system formulated by substructures第146-150页
        5.3.3 Equation of motion formulated by the mass and stiffness matrix of thewhole system第150-151页
        5.3.4 Numerical analysis:Case 1第151-158页
        5.3.5 Numerical analysis:Case 2第158-161页
    5.4 Application to the system with rigid motion in the substructure第161-162页
    5.5 Applications to a pad-on-disc system with experimental results第162-172页
        5.5.1 Description of the test rig of the pad-on-disc system第163-164页
        5.5.2 Description of the finite element model第164-165页
        5.5.3 Reduction of the pad-on-disc system and stability analysis第165-172页
    5.6 Conclusions第172-174页
6 Conclusions and Outlooks第174-180页
    6.1 Conclusions第174-175页
    6.2 Original contributions第175-177页
    6.3 创新点摘要第177页
    6.4 Outlooks第177-180页
References第180-195页
Research Projects and Publications during PhD Period第195-196页
Acknowledgements第196-197页
Curriculum Vitae第197-199页

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