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Interface Phenomena and Interaction Energy at the Surface of Electroconductive Solids

Nahirnyj T., Tchervinka K.

Computational Methods in Science and Technology

2008

Vol. 14, nr 2

105-110

For the local gradient approach in thermomechanics, the regularities of nearsurface nonhomogeneity in nonferromagnetic electroconductive solids, including the size effect of the ultimate stress limit are studied. It is noted that surface values of interaction energy and thermodynamic electric potential are determined by physical and geometrical properties of a body.

To describe the contribution of interface factor on acoustical emission in solids

Burak Y., Nahirnyj T.

Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika

2002

z. 60 [197]

67-75

The approach to describe the contribution of interface phenomena on acoustical emission in solids is proposed. It is based on the mathematical model of locally gradient solids which take into account the interface nonhomogeneity of interaction energy. On the model problems the regularity of dynamical behavior owing to the new arisen boundary is study.

Bi-continuum modelling of layered structures and crystalline interfaces

Sztyren M.

Journal of Technical Physics

2002

Vol. 43, no 3

265-276

The bi-continuum model composed of two interpenetrating and dynamically coupled material continua is analysed as a simplified but relatively accurate way to describe some physical phenomena in crystalline solids. The essential novelty of our approach consists in treating a crystalline medium as a bi-continuum, even if the crystalline lattice is structurally single-component. Particular attention is paid to the oscillatory behaviour of solutions on the atomic level. Starting from a discrete atomic chain, the basic formulation of the bi-continuum model is derived. The essential features of the model, including accuracy of the results as functions of physical parameters, are discussed.