The European Physical Journal E ( IF 1.8 ) Pub Date : 2021-05-20 , DOI: 10.1140/epje/s10189-021-00075-0 Michio Otsuki 1 , Hisao Hayakawa 2
|
Abstract
In this study, we numerically investigated the mechanical responses and trajectories of frictional granular particles under oscillatory shear in the reversible phase where particle trajectories form closed loops below the yielding point. When the friction coefficient is small, the storage modulus exhibits softening, and the loss modulus remains finite in the quasi-static limit. As the friction coefficient increases, the softening and residual loss modulus are suppressed. The storage and loss moduli satisfy scaling laws if they are plotted as functions of the areas of the loop trajectories divided by the strain amplitude and diameter of grains, at least for small values of the areas.
Graphic abstract
中文翻译：
振荡剪切下摩擦粒状材料的剪切模量和可逆颗粒轨迹
摘要
在这项研究中，我们数值研究了可逆相中振荡剪切作用下摩擦粒状颗粒的力学响应和轨迹，其中颗粒轨迹在屈服点以下形成闭环。当摩擦系数较小时，储能模量表现出软化，并且损耗模量在准静态极限内保持有限。随着摩擦系数的增加，软化和残余损耗模量得到抑制。如果将存储模量和损耗模量绘制成回路轨迹的面积除以晶粒的应变幅度和直径的函数，则至少满足面积定律，它们满足缩放定律。
京公网安备 11010802027423号