MECHANICAL-PROPERTIES OF FLAT CRYSTALLINE -STRUCTURES COMPOSED OF SOLID SMOOTH ELLIPTIC PARTICLES OF EQUAL DIMENSIONS

The mechanical properties of flat crystals composed of smooth solid el lipses were analyzed. The crystals with an ideal structure were shown to be anisotropic and, depending on direction, shape (eccentricity), a nd mutual arrangement of the particles, they can act either as a liqui d or as a solid body. The yield point tau of a system composed of smoo th solid particles of an arbitrary shape is proportional to the extern al pressure and the ratio between the volume epsilon(V) and shear epsi lon(tau) deformations (tau = pdepsilon(V)/depsilon(tau)). The yield po int is shown to vary from zero (liquid) to approximately 0.5 p or even higher (solid body).