Simulation of microstructure evolution of material as solved based on exponential time-difference format

Simulation of microstructure evolution of material as solved based on exponential time-difference format

A method and device for simulating microstructure evolution of a material based on solution in an exponential time-difference format. The method includes: establishing a reaction rate theory model for substance defects, wherein the model is expressed with equations that comprise linear terms having...

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Hauptverfasser: Dou, Yankun, Wang, Yangang, Xin, Zhikuang, Yang, Wen, He, Xinfu, Nie, Ningming, Jia, Lixia, Wang, Jue, Zhang, Jian
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Sprache:eng
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CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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creator Dou, Yankun
Wang, Yangang
Xin, Zhikuang
Yang, Wen
He, Xinfu
Nie, Ningming
Jia, Lixia
Wang, Jue
Zhang, Jian
description A method and device for simulating microstructure evolution of a material based on solution in an exponential time-difference format. The method includes: establishing a reaction rate theory model for substance defects, wherein the model is expressed with equations that comprise linear terms having coefficients characterized with matrixes; and iteratively solving the equations by using an exponential time-difference format, wherein during the iterative solving, the linear terms with exponential powers of the matrixes as the coefficients are integrated. Since a rate theory is not limited by spatial-temporal scales, the advantages of the rate theory can be significantly reflected when the microstructure evolution is simulated under a high damage dose condition; and then, the equations are solved by using the exponential time-difference format, with a solved result better in accuracy and higher in precision.
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The method includes: establishing a reaction rate theory model for substance defects, wherein the model is expressed with equations that comprise linear terms having coefficients characterized with matrixes; and iteratively solving the equations by using an exponential time-difference format, wherein during the iterative solving, the linear terms with exponential powers of the matrixes as the coefficients are integrated. Since a rate theory is not limited by spatial-temporal scales, the advantages of the rate theory can be significantly reflected when the microstructure evolution is simulated under a high damage dose condition; and then, the equations are solved by using the exponential time-difference format, with a solved result better in accuracy and higher in precision.</abstract><oa>free_for_read</oa></addata></record>
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COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
title Simulation of microstructure evolution of material as solved based on exponential time-difference format
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