论文标题
在不对称循环变形下的镜头行为
Yielding behavior of glasses under asymmetric cyclic deformation
论文作者
论文摘要
我们考虑了受到非对称循环剪切变形的模型玻璃的屈服行为，其中所施加应变在0和最大值$γ_ {\ rm max} $之间变化，并研究其对玻璃和系统尺寸退火程度的依赖性。良好的退火玻璃的屈服行为（与退火不良的眼镜不同）表现出与对称情况的显着差异，并且出现具有实质性可塑性但没有屈服的中间应变状态。最近提出的模型可以满足观察到的行为。对于较大的系统尺寸，中间应变状态变窄，导致退火带来明显的产量应变逆转。
We consider the yielding behaviour of a model glass subjected to asymmetric cyclic shear deformation, wherein the applied strain varies between 0 and a maximum value $γ_{\rm max}$, and study its dependence on the degree of annealing of the glass and system size. The yielding behaviour of well annealed glasses (unlike poorly annealed glasses) display striking differences from the symmetric case, with the emergence of an intermediate strain regime with substantial plasticity but no yielding. The observed behaviour is satisfactorily captured by a recently proposed model. For larger system sizes, the intermediate strain regime narrows, leading to a remarkable reversal of yield strain with annealing.
