Chapter 1 General Introduction of Deep-sea Spherical Pressure Hulls 1.1 Application scenario of deep-sea spherical pressure hulls 1.2 The design methodology of deep-sea pressure hull 1.2.1 Shape selection 1.2.2 Material selection 1.2.3 Hull thickness requirement based on the depth limit and safety factor 1.2.4 End closures design compatible with the hull and design requirement 1.3 Other considerations to ensure safety 1.3.1 Reliability 1.3.2 Fatigue and fracture 1.3.3 Model test 1.3.4 Seal design 1.4 Manufacturing process of deep-sea pressure hulls References Chapter 2 Material Selection for Deep-sea Spherical Pressure Hulls 2.1 Candidate materials for deep-sea spherical pressure hulls 2.1.1 Steels 2.1.2 Aluminium alloys 2.1.3 Titanium alloys 2.1.4 Acrylic plastics (polymethyl methacrylate) 2.1.5 Composites 2.2 Practice for material selection 2.2.1 Selection of titanium alloys 2.2.2 Selection of maraging steels References Chapter 3 Linear Buckling Mechanics of Deep-sea Spherical Pressure Hulls 3.1 Overview of current rules for spherical pressure hulls 3.1.1 Introduction of rules 3.1.2 Comparison of rules 3.2 Analytical analysis 3.2.1 Strength evaluation 3.2.2 Stability evaluation 3.3 Numerical analysis 3.3.1 Brief introduction of FEM principle 3.3.2 Numerical study of different methods References Chapter 4 Nonlinear Buckling of Deep-sea Spherical Pressure Hulls 4.1 Overview of current studies 4.1.1 Empirical formulae 4.1.2 Phenomenological models 4.2 Elastic-plastic buckling analysis 4.2.1 Titanium alloy spherical pressure hulls 4.2.2 Maraging steel spherical pressure hulls 4.3 Experimental study in laboratory scale 4.3.1 Materials and methods 4.3.2 Results and discussion References Chapter 5 Fatigue Life Assessment Theory for Deep-sea Spherical Pressure Hulls 5.1 Analysis methods for fatigue of spherical pressure hulls 5.1.1 Loading history of the spherical pressure hull
5.1.2 Low-cycle fatigue theory based on strain-cycles curve 5.1.3 Methods based on crack growth theory 5.1.4 A simplified life estimation method References Chapter 6 Testing and Numerical Simulation of Deep-sea Spherical Pressure Hulls 6.1 Verification testing 6.1.1 Ultimate compression-carrying capacity testing for scale model 6.1.2 Hydrostatic pressure testing for viewports 6.1.3 Function testing for hatch-cover opening and closing mechanism 6.2 Inspection testing 6.2.1 Material properties testing 6.2.2 Geometrical size measurement 6.3 Acceptance testing 6.3.1 Leakage testing 6.3.2 Hydrostatic pressure testing 6.4 Numerical Simulation 6.4.1 Structural strength calculation of the deep-sea spherical pressure hull using FEA method 6.4.2 Numerical simulation on collapse of the deep-sea spherical pressure hull 6.4.3 The simulation of transient dynamic process of crushing References
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