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Ceramic grain growth simulation of three-dimensional expansion and parallel research

Author: FangXiang
Tutor: JiGuoLi；XiongZhaoXian
School: Xiamen University
Course: Systems Engineering
Keywords: Grain growth Three-dimensional simulation Parallel Multithreading Monte Carlo
CLC: TP391.9
Type: Master's thesis
Year: 2002
Downloads: 62
Quote: 0
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Abstract


There are close linkages between the physical properties of ceramics and its corresponding microstructure, such as grain size, grain boundary and grain orientation and so affect the physical properties. Insight into the relationship between structure and macroscopic properties of, and will contribute to the development and application of ceramic materials. The microstructure of the ceramic is not static, but in a non-equilibrium dynamic, it is necessary to study are closely related to the evolution of a ceramic microstructure grain growth kinetics problem. In the past 50 years, many scholars from different angles to study the problem of grain growth, with a computer simulation of grain growth is also a hot topic. The main contents of the paper from the atomic line degree, the ABO 3 -type ceramic grain growth in three-dimensional simulation model based on Monte Carlo simulation methods to establish and simulation software developed using Microsoft Visual C and OpenGL. Both from the qualitative simulation graphical analysis or quantitative grain growth kinetic exponent k (initial stage of growth of about 1.8, the later stage of growth is about 5.5) or grain boundary fractal dimension D (about 2.6 initial stage of growth, the growth of the late approximately 2.2), the description of the experimental results of our simulation work reported are consistent with each other. Further, on the the serial calculations basis of the original grain growth parallel computing way study given and qualitative and quantitative analysis results. This thesis is divided into five chapters. Chapter 1: A brief introduction to the concept of ceramic microstructure and the basic theory of grain growth kinetics; Overview grain growth the basis of the Monte Carlo simulation model, as well as other computer simulation model. Simulation of three-dimensional extension of the second chapter of the grain growth: from the two-dimensional simulation model to discuss some specific issues, such as three-dimensional simulation model expansion force of the ion, the random orientation of the grain boundary treatment problem, the last details of the three-dimensional simulation software design and implementation. Chapter three-dimensional analysis of simulation results: a detailed analysis of both qualitative simulation graphics and quantitative simulation data the ABO 3 -type ceramic grain growth, microstructure evolution process. Chapter grain growth simulation parallel computing: raised on grain growth in a parallel way, the original two-dimensional simulation model based on multi-threading to achieve results show that compared with the original serial way of parallel computing have been greatly improved. Chapter 5 Conclusions and recommendations: To summarize the initial results of the current simulation work, and made the simulation model and software deficiencies and recommendations for improvement.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Computer simulation
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