| 摘要 |
PROBLEM TO BE SOLVED: To provide a simulation method which realizes reduction in calculation time. SOLUTION: The method has at least a step of classifying a position in a unit cell, where a trial grain is, for each of a plurality of basic cells, a step for classifying a proceeding direction of a trial grain, a step of obtaining the positions of atoms, which are specified from basic cell where a trial grain is and classification of a proceeding direction of a trial grain, and whose collision point is inside a basic cell where a trial grain is, referring to database, a step of setting thermal vibration displacement of atom by reference to a database, a step of calculating collision parameters and free flight distance of atoms by reference to the database and a step of selecting atoms, whose collision parameters are smaller than a predetermined collision parameter maximum value and whose free flight distance has a minimum positive value as colliding atoms.
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