Mechanical stability of solids at negative pressures

31st International Conference on Equations of State for Matter

Baidakov, V.G.^1

Institute of Thermophysics, Ural Branch of the Russian Academy of Sciences, Amundsen Street 107a, Ekaterinburg

620016, Russia^1

关键词: Finite density;    Inhomogeneous deformation;    Isotropic solids;    Lennard-Jones solid;    Long waves;    Negative pressures;    Nonzero values;    Reducing reactions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012004/pdf
DOI  :  10.1088/1742-6596/774/1/012004

来源: IOP

【 摘 要 】

The paper examines the reaction of an isotropic solid to infinitesimal and finite density perturbations. The boundary of stability against relatively small homogeneous and inhomogeneous deformations, and also the kinetic boundary of strength of a Lennard-Jones solid are determined in molecular dynamics experiments at negative pressures. It is shown that on the spinodal a solid retains its reducing reaction to small long-wave inhomogeneous perturbations. The work of formation of a critical pore also has a nonzero value on the spinodal.