The hydra string method: a novel means to explore potential energy surfaces and its application to granular materials

The hydra string method: a novel means to explore potential energy surfaces and its application to granular materials
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水螅弦法:探索势能面的新方法及其在颗粒材料中的应用

DOI:
10.1007/s10035-021-01184-5
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发表时间:
2022
期刊:
影响因子:
2.4
通讯作者:
Newhall, Katherine A.
Newhall, Katherine A.
中科院分区:
工程技术3区
文献类型:
--
作者:
Moakler, Christopher;Newhall, Katherine A.

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我们提出了一种了解颗粒材料的新方法,即Hydra String方法(HSM)。这是一种高效且自主的方法来搜索任意势能面(或任何类似的高维函数),该势能面列举了鞍点,极小值和它们之间的最小能量路径。在这样做时,它创建了该表面的降维网络表示。我们还提出了一系列的测试,以选择最佳的参数的应用程序的高速切削。我们将其应用到由双分散,无摩擦,软球的配置组成的颗粒系统的势能函数。未来的工作将利用所发现的过渡途径的合奏,统计预测的动态系统的谷物。
We present a novel means to understand granular materials, the Hydra String Method (HSM). This is an efficient and autonomous way to trawl an arbitrary potential energy surface (or any similarly high dimensional function) that enumerates the saddle points, minima, and minimum energy paths between them. In doing so, it creates a reduced dimensional network representation of this surface. We also present a series of tests to choose optimized parameters for the application of the HSM. We apply this to the potential energy function of a granular system consisting of a configuration of bi-disperse, frictionless, soft spheres. Future work will make use of the found ensemble of transition pathways to statistically predict the dynamics of a system of grains.
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发表时间: 2002
影响因子: 2.9
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