本书介绍了深海耐压球壳的主要设计理论以及影响设计可靠性的主要因素，着重阐述了基于耐压球壳备选材料综合性能的选材标准、耐压球壳球壳线性和非线性屈曲理论基础及计算方法，以及用于耐压球壳蠕变疲劳寿命预报的保载疲劳S-N曲线模型和考虑保荷效应的小时间域裂纹扩展模型。在此基础上，对深海耐压球壳的评价和试验方法以及近期的数据和经验积累进行了总结，希望能为工程应用提供一些有益的参考。

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