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MATERIAL MICROSTRUCTURE EVOLUTION SIMULATION SOLVED ON THE BASIS OF EXPONENTIAL TIME DIFFERENCE FORMAT

机译：基于指数时间差格式解决的材料微观结构演进仿真

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摘要

A method for material microstructure evolution simulation solved on the basis of an exponential time difference format, and a device. Said method comprises: establishing a reaction rate theoretical model of a substance defect, the model being expressed by using an equation, and the equation comprising a linear term having a coefficient represented by using a matrix; iteratively solving the equation by using an exponential time difference format, and during the iterative solution, integrating the linear term having a coefficient being an exponential power of the matrix. The rate theory has no space-time scale limitation, and therefore when simulating the evolution of a microstructure under a high damage dose condition, the advantages of the rate theory can be obviously embodied, and then the exponential time difference format is used to solve the equation, obtaining a solved result having better accuracy and higher precision.

机译：基于指数时间差格式和设备解决了材料微观结构演化模拟的方法。所述方法包括：建立物质缺陷的反应速率理论模型，该模型通过使用等式表示，包括具有通过使用矩阵表示的系数的线性术语的等式;通过使用指数时间差格式和在迭代解决方案期间迭代地解决方程，集成具有系数的线性术语是矩阵的指数功率。速率理论没有空时尺度限制，因此在高损伤剂量条件下模拟微观结构的演变时，速率理论的优点可以明显地体现，然后使用指数差异格式来解决等式，获得具有更好准确性和更高精度的求解结果。

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公开/公告号WO2021068901A1

专利类型
公开/公告日2021-04-15

原文格式PDF
申请/专利权人 CHINA INSTITUTE OF ATOMIC ENERGY;COMPUTER NETWORK INFORMATION CENTER CHINESE ACADEMY OF SCIENCES;
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申请/专利号WO2020CN120032
发明设计人 WANG YANGANG;HE XINFU;ZHANG JIAN;XIN ZHIKUANG;DOU YANKUN;NIE NINGMING;JIA LIXIA;WANG JUE;YANG WEN;
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申请日2020-10-09
分类号G16C20/10;
国家 CN
入库时间 2022-08-24 18:16:31

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