Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Kuzkin, Vitaly A."'
Autor:
Korznikova, Elena A., Kuzkin, Vitaly A., Krivtsov, Anton M., Xiong, Daxing, Gani, Vakhid A., Kudreyko, Aleksey A., Dmitriev, Sergey V.
Publikováno v:
Phys. Rev. E 102, 062148 (2020)
The equilibration of sinusoidally modulated distribution of the kinetic temperature is analyzed in the $\beta$-Fermi-Pasta-Ulam-Tsingou chain with different degrees of nonlinearity and for different wavelengths of temperature modulation. Two differen
Externí odkaz:
http://arxiv.org/abs/2101.01582
Autor:
Kuzkin, Vitaly A., Krivtsov, Anton M.
Publikováno v:
Phys. Rev. E 101, 042209 (2020)
We study conversion of thermal energy to mechanical energy and vice versa in $\alpha$-Fermi-Pasta-Ulam-Tsingou~(FPUT) chain with spatially sinusoidal profile of initial temperature. We show analytically that coupling between macroscopic dynamics and
Externí odkaz:
http://arxiv.org/abs/1910.12573
Autor:
Korznikova, Elena A., Morkina, Alina Y., Singh, Mohit, Krivtsov, Anton M., Kuzkin, Vitaly A., Gani, Vakhid A., Bebikhov, Yuri V., Dmitriev, Sergey V.
Publikováno v:
Eur. Phys. J. B 93, 123 (2020)
The effect of discrete breathers (DBs) on macroscopic properties of the Fermi-Pasta-Ulam chain with symmetric and asymmetric potentials is investigated. The total to kinetic energy ratio (related to specific heat), stress (related to thermal expansio
Externí odkaz:
http://arxiv.org/abs/1907.10094
Autor:
Kuzkin, Vitaly A.
Publikováno v:
Continuum Mechanics and Thermodymanics, 2019
We study thermal processes in infinite harmonic crystals having a unit cell with arbitrary number of particles. Initially particles have zero displacements and random velocities, corresponding to some initial temperature profile. Our main goal is to
Externí odkaz:
http://arxiv.org/abs/1808.07255
Autor:
Kuzkin, Vitaly A.
Publikováno v:
Continuum Mechanics and Thermodymanics, 2019
We study transient thermal processes in infinite harmonic crystals with complex (polyatomic) lattice. Initially particles have zero displacements and random velocities such that distribution of temperature is spatially uniform. Initial kinetic and po
Externí odkaz:
http://arxiv.org/abs/1808.00504
Autor:
Saadatmand, Danial, Xiong, Daxing, Kuzkin, Vitaly A., Krivtsov, Anton M., Savin, Alexander V., Dmitriev, Sergey V.
Publikováno v:
Phys. Rev. E 97, 022217 (2018)
One-dimensional chain of pointwise particles harmonically coupled with nearest neighbors and placed in six-order polynomial on-site potentials is considered. Power of the energy source in the form of single ac driven particles is calculated numerical
Externí odkaz:
http://arxiv.org/abs/1711.03485
Autor:
Krivtsov, Anton M., Kuzkin, Vitaly A.
In the present chapter, we discuss an approach for transition from discrete to continuum description of thermomechanical behavior of solids. The transition is carried out for several anharmonic systems: one-dimensional crystal, quasi-one-dimensional
Externí odkaz:
http://arxiv.org/abs/1707.09510
Autor:
Kuzkin, Vitaly A., Krivtsov, Anton M.
Publikováno v:
J. Phys.: Condens. Matter 29 (2017) 505401
An approach for analytical description of thermal processes in harmonic lattices is presented. We cover longitudinal and transverse vibrations of chains and out-of-plane vibrations of two-dimensional lattices with interactions of an arbitrary number
Externí odkaz:
http://arxiv.org/abs/1702.08686
Autor:
Kuzkin, Vitaly A., Krivtsov, Anton M.
Publikováno v:
Doklady Physics, 2017, Vol. 62, No. 2, pp. 85-89
We consider two high-frequency thermal processes in uniformly heated harmonic crystals relaxing towards equilibrium: (i) equilibration of kinetic and potential energies and (ii) redistribution of energy among spatial directions. Equation describing t
Externí odkaz:
http://arxiv.org/abs/1608.01149
Autor:
Kuzkin, Vitaly A., Dannert, Mona M.
Publikováno v:
Acta Mechanica, 227(6), 1645-1652, 2016
Dynamic buckling of an elastic column under compression at constant speed is investigated assuming the first-mode buckling. Two cases are considered: (i) an imperfect column (Hoff's statement), and (ii) a perfect column having an initial lateral defl
Externí odkaz:
http://arxiv.org/abs/1511.01358