a Molecular Dynamics Study of Lennard-Jones Glasses Under Shear.
The effects of large amplitude shearing rates and stresses on 108-particle amorphous Lennard-Jones systems have been examined. A resolution of the structural and dynamical properties reveals that there is a tendency for shear to organize the glass into layers and hence reduce shear viscosities. This phenomenon is correlated with failure of the material due to fracture. Comparison of the stress response with crystalline systems, at constant pressure as well as constant volume, gives the first steps that are necessary to develop a theory of stress-induced failure.
- Pub Date:
- Physics: General