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Critical Behavior in Dynamic Tensile Fracture of High Purity Aluminum
The dynamic tensile failure and fracture in ductile metals is of scientific importance for many engineering projects, about which spallation is one of the typical fracture phenomena concerned. Under dynamic loading, the nucleation, growth an....
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The Research on the Turbulence Flow Structure and Heat Transfer in Rotating Curvilinear Pipes
Rotating curvilinear pipes have a wide application in engineering practice. The characteristics of fluid flow and convective heat transfer in curvilinear pipes are important factors that influence the performance of various rotating machiner....
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The Preparation and Investigation of ZnO:Al Films and ZnO Based Light-emitting Device
ZnO has recently become a very popular material due to its great potential foroptoelectronics applications. The large direct band gap of 3.3 eV, along with the large excitonbinding energy (60 meV) and many other advantages, make ZnO a strong....
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Preparation, Characterization and Applications of Super-paramagnetic Composite Microspheres with Patt
In recent years, magnetic composite microspheres and organicinorganic composite materials with patterned surface structures have attracted growing attention due to their potential applications. Preparation of composite microspheres with patt....
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The Properties of Ultra-thin a-SiN_x Films Prepared by Microwave ECR Magnetic Sputtering
It has been more than 50 years ever since IBM shipped the first magnetic disk in 1956. In recent years, the magnetic storage density is increasing at 100% per year, because of the using of GMR, and MR technologies. Furthermore, people's depe....
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The Magnetohydrodynamic Simulation of a Coaxial Plasma Opening Switch
The plasma opening switch (POS) is one of the crucial components for inductive-energy storage pulsed-power accelerators, which have many advantages over the conventional capacitive-energy storage accelerators regard to cost and size, and hav....
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A Study on Improving the Homogeneity and Stability of Atmospheric Pressure Air Plasma
Non-equilibrium plasma has a lot of active particles, such as electrons, metastable ions, andradicals. It has strong reactive activity. In non-equilibrium plasma the electrons energy is veryhigh that may be beyond 10 eV, but the ions energy....
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The Discrete Particle and Coupled Discrete-Continuum Models and Numerical Methods for Granular Materi
Granular material is one kind of matter, which exists most widely in nature and is comprehensively applied to engineering practices. However, the physical properties of granular material are so complicated that it still remains as one among....
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Thermodynamic Analysis of Periodic Multiphase Materials by Spatial and Temporal Multiscale Method
Currently, multiphase materials with periodic microstructures have been widely used inmany advanced engineering applications such as aerospace, aircraft, biomedical, electronicequipment, superconducting coil and so forth. However, the design....
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Design of Material with Phononic Band-gap/Prescribed Properties
The materials are often required to exibit presicribed/specific and excellent properties inadvanced engineering. In some cases, these requirements may not be fulfilled by existedmaterials found in nature and developed in engineering. To desi....
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High-performance Global-local Higher-order Theory and Higher-order Laminated Plate Elements
Aim of this thesis is to propose more accurate and efficient laminated plate theories afterobjectively estimating previous the displacement-based laminated plate theories. To pursuethis goal, this thesis firstly compared several theories by....
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Optimum Design of Multi-functional Honeycomb Structures
Honeycomb structures are important attractive material systems for their lightweight and potential multi-functionality. Recently, many researchers in the academic and engineering community are devoted to this promising research area. The pre....
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Dynamic Buckling of Elastic Cylindrical Shells in Hamiltonian System
The stability of structure is an important research subject in solid mechanics, and much attention is focused on the problem in industry equipments, especially in aerospace now. Since cylindrical shell is a basal structure, its buckling prob....
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Symplectic Duality System and Virtual Boundary Element Method for the Magnetoelectroelastic Solids
The analytical and numerical solutions for the magnetoelectroelastic solids are obtained in this doctoral dissertation. The symplectic duality system methodology is introduced to plane problems for magnetoelectroelastic solids as well as a n....
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Elastic-Plastic Finite Element Algorithm Study of Heterogeneous Cosserat Bodies Based on Parametric V
Due to the high efficiency and flexibility, the classic continuum theory based finiteelement method (FEM) has been applied in a wide range of engineering areas such asaerospace, astronauics, mechanism, civil and nuclear engineerings. However....
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The Symplectic Method in Viscoelasticity
The Hamiltonian system is a direct method by which the order of differential governing equations can be reduced. Since the difficulty of solving high-order differential equations in the traditional methods, such as the semi-inverse method, i....
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Precise Algorithm in Time Domain for Solving Nonlinear Viscoelastic Problems
Numerical solution to nonlinear viscoelastic problems has notable signification boththeoretically and practically.Basically, nonlinear viscoelastic problems can be studied as physically nonlinearproblems or geometrically nonlinear problems.....
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The Dynamical Response Analysis of the Nonlinear Rotor Systems
An approximate analytical approach using the idea of Newton iteration method is presented for seeking the approximate analytical solutions of the nonlinear dynamical equations. By this means, the iteration operator L which may have an undete....
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Study on Granular System Dynamics of Propellant Bed with Press and Fracture
Research on dynamic characteristics of Granular system is concerned in many fields.Under the background of launching safety of propellant charge project, movement,accumulation, press and fracture of granular system have been systemically stu....
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MHD Simulation of the Structure of Reconnection Layer in the Presence of Shear Flow
Magnetic reconnection is believed to be a fundamental physical process for rapid energyrelease in space and laboratory fusion plasmas, and is of great interest in the research of otherareas such as topology, geometry and vector field dynamic....
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The Modeling of Flow Fields and Numerical Analyses of the Helical Instabilities of Arc Plasma
The plasma of arc discharge has many characteristics such as higher temperature, focusof power and controllable reaction, etc. It has been applied widely in industries and other newtechnology domain. It is needed to design the arc plasma gen....
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Mechanical Action Analysis and Numerical Simulation of Laser Plasma to Solid Target
Combining key problems of laser propulsion technique, the physical models have beendeveloped and the numerical simulations have been finished for the formation andexpansion of pulse laser-induced plasma or vapor under different condition. Th....
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Theoretical Studies for Several Typical Reactions by Using the Quasiclassical Trajectory
In molecular dynamics fields, the dynamical stereochemistry has recently develpoed oneindependent branch. With the development of theory and experiment, great achievement havebeen made in the chemical dynamics that has gotten into a new stag....
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Research on the Theory, Method and Experiment for Ultrafast Electronic Pulse Transient Sampling
In the high-energy physics and astrophysics experiments, the single events are of nanosecond-grade or even picosecond-grade risetime, so the transient sampling method of ultrafast electronic pulse (picosecond-grade risetime and single pulse)....
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Study on Community Characterstics of Zooplankton and Its Ecological Effect in Urban Lakes of Guangdon
Zooplankton is an important component of aquatic ecosystem. The distribution of zooplankton mostly influenced by food, predation, water temperature and macrophytes etc. Now knowledge on community characterstics and function of zooplankton in....
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Study of Function of OAZ Gene during Differentiation of K562 Cells
The polyamines (putrescine,spermidine,and spermine) are essential for allliving cells. They are largely bound to negatively charged molecules such as DNAand RNA and play an important role in cell proliferation, gene expression, cellprolifera....
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Study on Quantum Entanglement of Atom-systems under Different Conditions
The preparation of quantum entangled states and quantum decoherence are two im-portant subjects in quantum information and are fundamental to quantum communicationand quantum computers. The development of quantum information both in theory a....
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Separability and Entanglement Measure of Multipartite Quantum States
Quantum entanglement is not only one of the major characteristics that distinguishquantum from classical mechanics, but also an essential ingredient of quantum informationtheory. A lot of quantum information processing such as quantum telepo....
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A Study on Uniform Dielectric Barrier Discharge and Enhanced-corona Discharge at Atmospheric Pressure
The non-equilibrium plasma produced at atmospheric pressure contains a lot of active particles, high-energy electrons and low-energy ions, which can reduce the threshold of chemical reactions. So many reactions can occur in low temperature,....
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Study of the Electron Transport in Nanometer Structures
The quantum behavior of the electron in the nanometer structures attracts moreand more interests on the design of the novel devices, and leads to many advancesin theoretical understanding of the mesoscopic systems and nanometer structures.In....