1 |
Topics in the physics of inhomogeneous media =: 非均勻介質的物理特性. / 非均勻介質的物理特性 / Topics in the physics of inhomogeneous media =: Fei jun yun jie zhi de wu li te xing. / Fei jun yun jie zhi de wu li te xingJanuary 1998 (has links)
Cheung Ping. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1998. / Includes bibliographical references (leaf 170). / Text in English; abstract also in Chinese. / Cheung Ping. / Acknowledgements --- p.i / Abstract --- p.ii / Chapter 1 --- Introduction --- p.1 / Chapter Part I : --- Effective Parameters for Wave Mixing Phenomenon in Random Nonlinear Composites --- p.7 / Chapter 2 --- General Three Waves Mixing --- p.7 / Chapter 2.1 --- "Defining the nonlinear effects, basic equations" --- p.8 / Chapter 2.2 --- Defining the effective response --- p.12 / Chapter 2.3 --- Formalism --- p.13 / Chapter 2.4 --- Discussion --- p.19 / Chapter 3 --- Effective medium approximation for three wave mixing --- p.21 / Chapter 3.1 --- Decoupling methods --- p.21 / Chapter 3.2 --- Effective medium approximation (EMA) --- p.22 / Chapter 4 --- Second Harmonic Generation --- p.26 / Chapter 4.1 --- Simple EMA vs Modified EMA --- p.26 / Chapter 4.2 --- Dilute limit formula for second harmonic generation --- p.28 / Chapter 4.3 --- Composite of two non-linear components --- p.33 / Chapter 5 --- Numerical Model and Computer Simulations --- p.35 / Chapter 5.1 --- Model --- p.35 / Chapter 5.2 --- Direct Simulation --- p.37 / Chapter 5.3 --- Voltage Summation Method(VSM) --- p.40 / Chapter 5.4 --- Simulation parameters --- p.41 / Chapter 5.4.1 --- Dielectric Composite --- p.41 / Chapter 5.4.2 --- Metal-Insulator Composite --- p.42 / Chapter 5.5 --- Simulation results and discussion --- p.42 / Chapter 5.5.1 --- Linear case --- p.42 / Chapter 5.5.2 --- Second harmonic generation --- p.44 / Chapter 6 --- Concentration ratio and geometry effect of composite --- p.49 / Chapter 6.1 --- Percolation effect and critical exponents for SHG --- p.49 / Chapter 6.1.1 --- Insulator-normal conductor system --- p.50 / Chapter 6.1.2 --- Superconductor-normal conductor system --- p.53 / Chapter 6.2 --- Enhancement of second order susceptibility --- p.54 / Chapter 6.2.1 --- Simple EMA --- p.55 / Chapter 6.2.2 --- Modified EMA --- p.56 / Chapter 7 --- General Four Waves Mixing --- p.58 / Chapter 7.1 --- Terminology --- p.59 / Chapter 7.2 --- Defining the effective response --- p.61 / Chapter 7.3 --- Theory of general four wave mixing --- p.62 / Chapter 8 --- Third Harmonic Generation --- p.69 / Chapter 9 --- Computer Simulations on Third Harmonic Generation --- p.72 / Chapter 9.1 --- Voltage Summation Method (VSM) for THG --- p.73 / Chapter 9.2 --- Simulation parameters --- p.74 / Chapter 9.2.1 --- Dielectric Composite --- p.74 / Chapter 9.2.2 --- Metal-Insulator Composite --- p.74 / Chapter 9.3 --- Simulation results and discussion --- p.75 / Chapter 9.3.1 --- Dielectric composite --- p.75 / Chapter 9.3.2 --- Intrinsic third order susceptibility only --- p.75 / Chapter 10 --- Applications --- p.79 / Chapter 10.1 --- Coated sphere problem --- p.79 / Chapter 10.1.1 --- Model Composite --- p.79 / Chapter 10.1.2 --- Local field ratio --- p.81 / Chapter 10.1.3 --- Calculation of Ee --- p.84 / Chapter 10.1.4 --- The effective non-linear response --- p.86 / Chapter 10.2 --- Ferroelectric Composite --- p.91 / Chapter 11 --- Conclusions --- p.96 / Chapter Part II : --- Other Related Topics In Inhomogeneous Sys- tems --- p.99 / Chapter 12 --- Modified EMA for Kerr effect non-linear composite --- p.99 / Chapter 12.1 --- Theory --- p.99 / Chapter 12.2 --- Discussion --- p.101 / Chapter 12.3 --- Numeric Simulations --- p.102 / Chapter 12.4 --- Conclusion --- p.103 / Chapter 13 --- Clustering Effects in Nonlinear Random Composites --- p.104 / Chapter 13.1 --- Clustering in Binary composites of Strongly Nonlinear Conductors --- p.105 / Chapter 13.1.1 --- Computer simulation model on clustering effects --- p.105 / Chapter 13.1.2 --- DEMA --- p.107 / Chapter 13.1.3 --- DEMA applied to deterministic fractals --- p.109 / Chapter 13.1.4 --- DEMA applied to DLCA clusters --- p.111 / Chapter 13.2 --- Clustering Effects for Second Harmonic Generation --- p.115 / Chapter 14 --- Supercell band structure calculation of inhomogeneous media --- p.117 / Chapter 14.1 --- Electronic structure of porous silicon and germanium --- p.117 / Chapter 14.1.1 --- Porous Silicon --- p.119 / Chapter 14.1.2 --- Porous Germanium --- p.122 / Chapter 14.2 --- Band gap investigation of Si-C alloys --- p.122 / Chapter 14.3 --- Future work --- p.123 / Chapter 15 --- Dice games and Markov Processes --- p.125 / Chapter 16 --- Bar attendance problem --- p.133 / Chapter 16.1 --- Bar-attendance model --- p.133 / Chapter 16.2 --- Time series analysis --- p.134 / Chapter 16.3 --- Distribution of attendance and volatility --- p.137 / Chapter 16.4 --- Performance index --- p.139 / Chapter Part III : --- Appendices --- p.145 / A --- p.145 / B --- p.155
|
2 |
Topics in the physics of inhomogeneous media =: 非均勻介質物理專題. / 非均勻介質物理專題 / Topics in the physics of inhomogeneous media =: Fei jun yun jie zhi wu li zhuan ti. / Fei jun yun jie zhi wu li zhuan tiJanuary 1996 (has links)
by Woo Yick Fai. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1996. / Includes bibliographical references (leaves 188-191). / by Woo Yick Fai. / Chapter i. --- Abstract --- p.i / Chapter ii. --- Acknowledgment --- p.ii / Chapter 0. --- Introduction --- p.1 / Chapter 1. --- Effects of nonlinear impurity in a diatomic chain --- p.3 / Chapter 1.1 --- Introduction --- p.3 / Chapter 1.2 --- Formulation --- p.9 / Chapter 1.3 --- Results --- p.16 / Chapter 1.4 --- Discussion --- p.28 / Chapter 2. --- Single nonlinear impurity in a diatomic plane --- p.30 / Chapter 2.1 --- Introduction --- p.30 / Chapter 2.2 --- Formulation --- p.34 / Chapter 2.3 --- Results --- p.39 / Chapter 2.4 --- Discussion --- p.43 / Chapter 3. --- Effects of a nonlinear impurity in a diatomic cube --- p.46 / Chapter 3.1 --- Introduction --- p.46 / Chapter 3.2 --- Formulation --- p.50 / Chapter 3.3 --- Results --- p.54 / Chapter 3.4 --- Discussion --- p.58 / Chapter 4. --- Effective response in random mixtures of linear and nonlinear conductors --- p.60 / Chapter 4.1 --- Introduction --- p.60 / Chapter 4.2 --- Formalism of our proposed theory --- p.67 / Chapter 4.3 --- Results --- p.68 / Chapter 4.4 --- Effective response in random mixture of strongly nonlinear composites --- p.74 / Chapter 5. --- 1D traffic models --- p.77 / Chapter 5.1 --- Introduction to Cellular Automata models for traffic flow --- p.77 / Chapter 5.2 --- Inhomogeneous 1D traffic models --- p.89 / Chapter 6. --- 2D traffic models --- p.102 / Chapter 6.1 --- Isotropic traffic systems --- p.102 / Chapter 6.2 --- Anisotropic traffic systems --- p.117 / Chapter 7. --- Inhomogeneities in the 2D traffic models --- p.127 / Chapter 7.1 --- Systems with faulty traffic lights --- p.127 / Chapter 7.2 --- Systems with over-passes --- p.144 / Chapter 7.3 --- Traffic models with two-time scales --- p.154 / Chapter 7.4 --- Traffic models with acceleration --- p.159 / Appendix --- p.164 / Appendix A Effects of a nonlinear impurity in a diatomic chain --- p.165 / Appendix B Effective response in random mixtures of linear and nonlinear conductors --- p.175 / Appendix C Upper bounds for the critical car densities in traffic flow problems --- p.180 / Appendix D Improved mean-field theory of two-dimensional traffic flow models --- p.183 / Bibliography --- p.188
|
3 |
Micromechanics of heterogeneous materials under compressive loadingLaird, George 11 August 1993 (has links)
In mining and mineral processing, compressive loading is often encountered
during the comminution of ore bearing minerals and in the wear resistant materials
used in the comminution circuit. A common thread joining many of the materials that
are primarily used under compressive loading is the presence of a high modulus
reinforcement, either fiber or particulate, embedded within a lower modulus matrix
phase (i.e., a brittle heterogeneous material). Many of these heterogeneous materials
are designed or manufactured such that an imperfect interface (i.e., an interface that
provides less than complete coherency between the reinforcing phase and the matrix)
exists between the reinforcing phase and the matrix (e.g., tough fiber-reinforced
ceramics). To date, most research has focused on the response of these heterogeneous
materials with imperfect interfaces to tensile loading; however, little is known about
their response to compressive loading.
The principal objective of this investigation is to develop a better understanding
of the micromechanical behavior of these complex materials under compressive
loading. Analytical solutions are reviewed and compared with finite element models
for the simulation of heterogeneous materials with imperfect interfaces under
compressive loading. This comparison shows that a nonlinear numerical approach
(finite element method) is necessary to fully simulate the behavior of these materials.
To validate the nonlinear model, laser moire experiments were conducted on a model
heterogeneous material loaded under uniaxial and biaxial compression. In-plane
displacements were measured and found to be in fundamental agreement with the
nonlinear finite element model. Subsequently, finite element simulations were
developed for a variety of heterogeneous materials with imperfect interfaces. Results
show that deleterious tensile stress concentrations are primarily influenced by three
factors: (i) the nature of the imperfect interface, (ii) the moduli mismatch between the
reinforcement and matrix, and (iii) the volume fraction of the reinforcement.
Finally, crack initiation experiments in laboratory models of a heterogeneous
material with a frictional imperfect interface were conducted to substantiate the prior
work using nonlinear finite element models. Experimental results correlate well with
the numerically-predicted micromechanical behavior of a model heterogeneous system
under uniaxial compressive loading. / Graduation date: 1994
|
4 |
Hybrid atomistic-continuum modeling of inhomogeneous materialsZhou, Hong. January 1900 (has links)
Thesis (Ph.D.)--University of Nebraska-Lincoln, 2006. / Title from title screen (site viewed on Mar. 13, 2007). PDF text: xxi, 171, p. : col. ill. UMI publication number: AAT 3225793. Includes bibliographical references. Also available in microfilm and microfiche format.
|
5 |
WAVE PROPAGATION IN INHOMOGENEOUS ANISOTROPIC MEDIASchulenberger, J. R. (John R.), 1934- January 1968 (has links)
No description available.
|
6 |
Damage in heterogeneous aluminum alloys /Gammage, Justin. Wilkinson, D. S. January 2002 (has links)
Thesis (Ph.D.)--McMaster University, 2003. / Advisor: D. S. Wilkinson. Includes bibliographical references (leaves 227-232). Also available via World Wide Web.
|
7 |
On some mathematical aspects of deformations of inhomogeneous elastic materials /Kusuma, Jeffry. January 1992 (has links) (PDF)
Thesis (Ph. D.)--University of Adelaide, Dept. of Applied Mathematics, 1992. / Includes bibliographical references (leaves 179-186).
|
8 |
The surface crack problem for a functionally graded coating bonded to a homogeneous layer /Kasmalkar, Maheendra, January 1997 (has links)
Thesis (Ph. D.)--Lehigh University, 1997. / Includes vita. Includes bibliographical references (leaves 207-216).
|
9 |
Spontaneous formation of charge inhomogeneity on silica surface immersed in water /Huang, Zhoushen. January 2007 (has links)
Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2007. / Includes bibliographical references (leaves 29-30). Also available in electronic version.
|
10 |
Numerical studies of macroscopically disordered materials /Koss, Robert Stephen January 1986 (has links)
No description available.
|
Page generated in 0.0686 seconds