A5102018215- Aluminum Alloy Microstructure Properties
- Solidification and crystal growth phenomena
- Fluid Dynamics and Thin Films
- Microstructure and mechanical properties
- Metallurgical Processes and Thermodynamics
- Aluminum Alloys Composites Properties
- Mechanical Behavior of Composites
- Metallic Glasses and Amorphous Alloys
- Rheology and Fluid Dynamics Studies
- Crystallization and Solubility Studies
- Nanoporous metals and alloys
- Robotic Locomotion and Control
- High-Velocity Impact and Material Behavior
- Control and Dynamics of Mobile Robots
- Robotic Path Planning Algorithms
- nanoparticles nucleation surface interactions
Guilin University of Electronic Technology
2015-2018
University of Science and Technology Beijing
2010-2017
The effect of anisotropic surface tension and interface kinetics on deep cellular crystal growth is studied. An asymptotic solution in directional solidification obtained by using the matched expansion method multiple variable method. results show that as parameters increase, total length increases root depth increases, whereas curvature near or radius decreases.
<sec>In this paper, based on the steady solution of deep cellular crystal growth, matching asymptotic method and multiple variable are used to obtain dispersion relation quantization condition interfacial morphology in directional solidification process when dynamics is anisotropic. The stability cell growth during under influence anisotropic studied.</sec><sec>The mathematical model oriented system established, overall ground state constant taken as state, unsteady...
Dynamic model of a unicycle robot with three driven joints and controller to achieve its balanced lateral rolling motion was studied in this paper. With regard the nonholonomic constraints, we established dynamic for by use Chaplygin equation. The modeling results revealed that there were 6 general velocities 3 underactuated freedoms system. We considered dynamical subsystem robot's motion, developed it applying principle Partial Feedback Linearization. designed linearizing angle frame,...
This paper investigates the interaction between convective flow induced by straining and interface morphology of a particle growing in undercooled melt. The resulting approximate solution shape shows that convection makes enhance its growth velocity protrude near surface where is incoming, but decreases outgoing, both incoming anisotropic tension make have superposition effect along favorite crystalline direction. particles melt evolve into various shapes which high strength/weight ratio...
This paper studies the effect of anisotropic surface tension on morphological stability deep cellular crystal in directional solidification by using matched asymptotic expansion method and multiple variable method. We find that growth with shows same mechanism as isotropic tension. The contains two types global instability mechanisms: oscillatory instability, whose neutral modes yield strong dendritic structures, low-frequency weakly structures. Anisotropic has significant mechanisms. As...
The effect of interface kinetics on the stability deep cell morphology in directional solidification is studied. By using multiple variable method and matching asymptotic methodandby finding mode solution system,the dispersion relation satisfied by change rate disturbance amplitude cell-crystal derived , quantization condition obtained. results show that there are two global instability mechanisms system with considering growth crystal interfacial dynamic parameters : oscillation mechanism...