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This book is the first monograph focusing on ellipsoidal heads,
which are commonly used as an end closure of pressure vessels in
chemical, petroleum, nuclear, marine, aerospace and food processing
industries. It provides a comprehensive coverage of stress,
failure, design and fabrication of ellipsoidal heads. This book
investigates in detail buckling/plastic collapse behaviors of
ellipsoidal heads using nonlinear finite element methods and
experiments. Buckling/plastic collapse experiments are performed on
37 ellipsoidal heads which cover various geometric parameters,
material and fabrication methods. In particular, modern measurement
technologies, such as 3D laser scanning, are used in the
experiments of these ellipsoidal heads including large heads with a
diameter up to 5 metres. Moreover, this book presents new formulas
for accurate prediction of buckling/plastic collapse pressures of
ellipsoidal heads. Using elastic-plastic theory, this book proposes
a new failure mechanism-based method for design of ellipsoidal
heads. Compared to other methods in current codes and standards
based on elastic or perfectly plastic theory, the new design method
can fully develop the head's load-carrying capacity, which reduces
head thickness and thus cost. Also, this book studies control on
fabrication quality of ellipsoidal heads, including shape
deviation, forming strain and forming temperature. It is useful as
a technical reference for researchers and engineers in the fields
of engineering mechanics, engineering design, manufacturing
engineering and industrial engineering.
This book is the first monograph focusing on ellipsoidal heads,
which are commonly used as an end closure of pressure vessels in
chemical, petroleum, nuclear, marine, aerospace and food processing
industries. It provides a comprehensive coverage of stress,
failure, design and fabrication of ellipsoidal heads. This book
investigates in detail buckling/plastic collapse behaviors of
ellipsoidal heads using nonlinear finite element methods and
experiments. Buckling/plastic collapse experiments are performed on
37 ellipsoidal heads which cover various geometric parameters,
material and fabrication methods. In particular, modern measurement
technologies, such as 3D laser scanning, are used in the
experiments of these ellipsoidal heads including large heads with a
diameter up to 5 metres. Moreover, this book presents new formulas
for accurate prediction of buckling/plastic collapse pressures of
ellipsoidal heads. Using elastic-plastic theory, this book proposes
a new failure mechanism-based method for design of ellipsoidal
heads. Compared to other methods in current codes and standards
based on elastic or perfectly plastic theory, the new design method
can fully develop the head's load-carrying capacity, which reduces
head thickness and thus cost. Also, this book studies control on
fabrication quality of ellipsoidal heads, including shape
deviation, forming strain and forming temperature. It is useful as
a technical reference for researchers and engineers in the fields
of engineering mechanics, engineering design, manufacturing
engineering and industrial engineering.
In recent years, the fundamental research on the structural
strength and optimal deisgn of composite pressure vessel and piping
under complex load and environment has become crucial to ensure
safe, economical and reliable run of these structures in area of
advanced energy utilization. The content of this book includes the
strength prediction of composite vessel using composite laminate
theory and finite element analysis, the optimal design using
adaptive genetic algorithm and immune algorithm as well as the
failure analysis under deflection load and the fatigue lifetime
evaluation under cyclic vibrating load using finite element
analysis for buried piping. Specially, the authors attempt to
explain some physical phenomena such as the stiffness degradation
in process of damage evolution for composites. In addition, some
advanced methods for predicting the collapse failure of these
structures using finite element analysis are also discussed. This
book may provide a good reference available for the mechanical
strength prediction and optimization of other complex structures.
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