A method of constructing periodic polycrystalline structure of materials based on matlab mpt toolkit
A polycrystalline structure and periodic technology, applied in the fields of instrumentation, molecular entity identification, computational theoretical chemistry, etc., can solve the problems of not being able to meet the periodicity requirements of materials at the same time, slow execution speed, and occupying running memory, so as to reduce the number of atoms, The effect of reducing memory and improving efficiency
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[0027] The present invention provides a method for constructing a periodic polycrystalline structure of a material based on the matlab mpt toolkit. Taking the construction of a three-dimensional periodic polycrystalline structure of W material as an example, the construction process of the one-dimensional and two-dimensional periodic polycrystalline structures is the same. This will not be described in detail, and the construction of a three-dimensional periodic polycrystalline structure is as follows:
[0028] first step, such as figure 1 As mentioned above, according to the three-dimensional (x, y, z) direction lengths of the polycrystalline structure being 1, 2, and 4 respectively, a first cuboid structure is established, and the neighbor distance correction coefficient β is set to 0.9, and within the first cuboid structure Randomly generate 10 crystal nucleus points.
[0029] In the second step, copy 26 of the first cuboid structures, and form a second cuboid structure ce...
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