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On the determination of single-crystal plasticity parameters by diffraction: optimization of a polycrystalline plasticity model using a genetic algorithm

机译:通过衍射确定单晶可塑性参数:使用遗传算法优化多晶可塑性模型

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摘要

A genetic algorithm was implemented in order to optimize the selection of parameters within a polycrystalline plasticity model. Previously collected experimental data from tests performed on textured Zircaloy-2, consisting of macroscopic flow curves, lattice strains and Lankford coefficients, all measured in both tension and compression in three principle directions of a plate, were reproduced by the model. The results obtained were found to be comparable to prior attempts to optimize the model parameters manually.
机译:为了优化多晶可塑性模型中参数的选择,实施了遗传算法。该模型复制了先前在织构Zircaloy-2上进行的测试中收集的实验数据,这些数据包括宏观流动曲线,晶格应变和Lankford系数,均在板的三个主要方向上以拉伸和压缩方式测量。发现获得的结果与先前手动优化模型参数的尝试具有可比性。

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