论文标题
粒子摩擦对3D循环压缩颗粒材料响应的影响
Effects of interparticle friction on the response of 3D cyclically compressed granular material
论文作者
论文摘要
我们从数值上研究了粒子间摩擦系数对三维球形颗粒周期性纯剪切的响应的影响。我们专注于晶粒的旋转和翻译，并查看这些位移的空间分布以及它们的概率分布函数。我们发现，随着摩擦的增加，剪切带变得更薄且更加明显。在低摩擦下，粒子旋转的幅度均匀地分布在系统中，因此大多与仿射和非植入颗粒翻译都独立。相比之下，在高摩擦下，旋转在剪切区域中很强。这项工作表明了研究颗粒间摩擦对颗粒材料对循环强迫响应的影响的重要性，这既可以更好地理解旋转如何与剪切颗粒系统中的翻译相关联，又是由于循环强迫在行星科学和行业和行业中大多数现实世界应用的相关性。
We numerically study the effect of inter-particle friction coefficient on the response to cyclical pure shear of spherical particles in three dimensions. We focus on the rotations and translations of grains and look at the spatial distribution of these displacements as well as their probability distribution functions. We find that with increasing friction, the shear band becomes thinner and more pronounced. At low friction, the amplitude of particle rotations is homogeneously distributed in the system and is therefore mostly independent from both the affine and non-affine particle translations. In contrast, at high friction, the rotations are strongly localized in the shear zone. This work shows the importance of studying the effects of inter-particle friction on the response of granular materials to cyclic forcing, both for a better understanding of how rotations correlate to translations in sheared granular systems, and due to the relevance of cyclic forcing for most real-world applications in planetary science and industry.
