Studies of Rheology and Deformation Mechanism of Amorphous materials

我们构造了一个非线性弹性理论，其中弹性能是应变的周期函数。然后，我们可以描述具有高位错密度的固体的塑性变形。我们认为玻璃是含有高密度缺陷的固体，并认为在无序环境中自由体积弛豫的扩散导致了缓慢的玻璃化弛豫。我们通过构造Ginzburg-Landau理论对这一机制进行了数值论证。我们还将剪切变形应用于两相状态的固体，以发现两相状态下的位错形成和流变学。

We have constructed a nonlinear elasticity theory in which the elastic energy is a periodic function of the strains. We can then describe plastic deformations of solids with a high dislocation density. We regard glasses as solids containing high density defects and claim that diffusion of the free volume relaxation in disordered environment gives rise to slow glassy relaxations. We have numerically demonstrated this mechanism by constructing a Ginzburg-Landau theory. We have also applied shear deformations to solids in two phase states to find dislocation formation and rheology in two phase states.