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arXiv 1111.3796cond-mat.mtrl-scinlin.PSphysics.comp-ph
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颗粒晶体动力学的介观方法

Mesoscopic approach to granular crystal dynamics

Marcial Gonzalez, Jinkyu Yang, Chiara Daraio, Michael Ortiz

摘要:

本文提出了一种颗粒晶体动力学的介观方法,它包括三维有限元模型和一维正则化接触模型。该方法研究了振动能捕获效应在一维接触颗粒链的动态行为中的作用(即,颗粒状晶体),在小到中等的冲击速度下。模型的唯一输入是形成系统的单个颗粒的几何形状和弹性材料属性。我们提供了详细的验证结果,并将其预测与实验数据进行比较来验证模型。这种方法提供了一个物理上健全的,第一原理描述的颗粒系统中的耗散损失。

英文摘要:

We present a mesoscopic approach to granular crystal dynamics, which comprises a three-dimensional finite-element model and a one-dimensional regularized contact model. The approach investigates the role of vibrational-energy trapping effects in the dynamic behavior of one-dimensional chains of particles in contact (i.e., granular crystals), under small to moderate impact velocities. The only inputs of the models are the geometry and the elastic material properties of the individual particles that form the system. We present detailed verification results and validate the model comparing its predictions with experimental data. This approach provides a physically sound, first-principle description of dissipative losses in granular systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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