Study of nanoscale ductile mode cutting of silicon using molecular dynamics simulation

... Transformation of Silicon Workpiece Material.….75 iv 5.3.2 The Chip Formation in Nanoscale Ductile Mode Cutting of Silicon ……………………………………………………….79 5.3.3 The Mechanism of Ductile Mode Cutting of Silicon .…….83 ... The model for the MD simulation of nanoscale ductile mode cutting of silicon: (a) a schematic of the MD model, (b) an output of the MD...

Ngày tải lên: 12/09/2015, 08:16

... ATOMISTIC MODEL FOR NANOSCALE DUCTILE MODE CUTTING OF SILICON WAFERS HE TAO (B.Eng, WUT) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING ... B 26 Chapter 3: Model Development Chapter Model Development 3.1 Nanoscale chip formation zone 3.1.1 Nanoscale ductile mode cutting of silicon wafers While the y...

Ngày tải lên: 30/09/2015, 14:23

... machining of KDP in dry cutting conditions Chapter 1: Introduction 1.3 Organization of the Thesis In the present work, an experimental investigation of nanoscale ductile mode cutting of Potassium Dihydrogen ... usually are soft and brittle The importance of surface integrity requirement on these materials led to applicability of nanoscale ductile cutting technolo...

Ngày tải lên: 26/11/2015, 22:48

... co-sputtering Si and SiC targets Furnace annealing and RTA techniques were compared by studying the precipitation and crystallization of Si and SiC-NC with varying Si/SiC ratio after annealing Si and ... furnace annealing Page of Figure Si and SiC grain size from RTA and furnace annealing in different Si concentration concentration increases, higher degree of...

Ngày tải lên: 21/06/2014, 05:20

... movement, and cutting forces during the cutting processes of no-wear, adherence, plowing, and cutting regimes; Komanduri et al [5–7] carried out MD simulations of nanometric cutting of single-crystal ... the start of the cutting Then the cutting forces tend to remain steady during the rest of the cutting process The formation of dislocations results in the releas...

Ngày tải lên: 22/06/2014, 01:20

... 72 and nanoindentation-induced phase transformations during loading and unloading Both spherical and Berkovich indenters were considered Molecular Dynamics Simulation The interatomic ... explored phase transformations of Si applied a spherical indenter capable of triggering large-scale phase transformations In the present MD simulations, a spherical indenter was first...

Ngày tải lên: 21/06/2014, 22:20

... course of an MD simulation The idea is that each state is to a large extent topologically different from any other state and can be characterized by an approximately Gaussian distribution of the radius ... starting structure Dagget, molecular dynamics simulations are capable of unraveling whole protein folding / unfolding pathways [1] Indeed, simulation techniques have been...

Ngày tải lên: 13/08/2014, 22:22

... understanding of the mechanism of microwaveassisted magnetization reversal and study the influence of shape and patterning effects on the reversal process, and (b) To suggest improvements in current ... regardless of material parameters and geometry It demonstrates its versatility by detecting an indirect signature of domain nucleation and switching in large area t...

Ngày tải lên: 09/09/2015, 11:30

... focused on the modeling and simulation of (1) surface instability, (2) cavitation instability and (3) humidity– driven bifurcation of soft materials of hydrogels and elastomers The goal is to ... Journal of Solids and Structures 47, pp 2034–2042 Wong, W.H., Guo, T.F., Zhang, Y.W., Cheng, L., 2010 Surface instability maps for soft materials Soft Matter 6, pp 57...

Ngày tải lên: 10/09/2015, 15:52

... and spatial elastica Planar elastica comprise three mostly encountered cases: pin-pin elastica, clamp-pin elastica, and clamp-clamp elastica When both ends of elastica are clamped, and the system ... Diagram of D − λ1 / Pcr (spatial clamp-clamp elastica) ………… … 82 Figure 4.38 Diagram of D − λ3 / Pcr (spatial clamp-clamp elastica) …………….…82 Figure 4.39 Diagram of D − Strain...

Ngày tải lên: 26/09/2015, 09:39

... Electron Transport Study of Two- terminal Molecular Electronic Devices Using Ab Initio Methods Zou Xu (B Eng., University of Science and Technology of China, P R China) A ... of microelectronic devices As a result, molecular electronic systems built with molecular electronic devices could be miniaturized continuously The first step to the success of...

Ngày tải lên: 05/10/2015, 19:03

... conformers taken at 10-ps intervals along the unbiased simulations The radius of gyration and RMSD values are calculated using all heavy atoms The black diamond corresponds to the native state following ... local free energy minima in a broad region of the conformational space close to the native state The approach is designed to provide a qualitative map of t...

Ngày tải lên: 16/03/2014, 23:20

... College of Engineering and Technology and the Department of Mechanical Engineering at the University of Nebraska at Lincoln References [1] H H€kkinen, U Landman, Superheating, melting, and a annealing ... sq thermal relaxation time Subscript i index of the atom In this work, MD simulations are conducted to study the thermal and thermomechanical phenomena in laser...

Ngày tải lên: 06/05/2014, 08:54

... structure of fused silica at 300 K through a so-called “quenching” procedure [10] The structure of the Molecular dynamics simulation of ultrafast laser ablation of fused silica film obtained fused silica ... Conclusion In conclusion, ultrafast laser ablation of fused silica is simulated using the molecular dynamics technique Ionization and genera...

Ngày tải lên: 06/05/2014, 08:54

... S., and Kuroki, M., 1993, "Molecular Dynamics Study of Solid Melting and Vaporization by Laser Irradiation," International Journal of Heat and Mass Transfer, 36, pp 20612067 Herrmann, R F W., and ... 3209-3222 Shibahara, M., and Kotake, S., 1998, "Quantum Molecular Dynamics Study of Light-to -heat Absorption Mechanism in atomic Systems," International Journal of...

Ngày tải lên: 06/05/2014, 08:55