Physical mesomechanics of a deformed solid as a multilevel system. IV. Effect of particle interpenetration without continuity violation under the action of concentrated energy fluxes

Panin, V. E.; Panin, A. V.; Моисеенко, Д. Д.; Shlyapin, A. D.; Avraamov, Yu.S.; Koshkin, V.I.

doi:10.1016/j.physme.2007.06.003

Cited by 6 publications

(8 citation statements)

References 8 publications

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“…As a result, the material is full of defects (vacancies, dislocations) and becomes a hydrodynamic medium, i.e., gel with factually zero shear strength. This conclusion is wholly confirmed by experiments [15,16] According to the concept of a highly excited state [9,11], highly excited crystals, in essence, become a superposition of several structures, and the number of allowable structural states in the system is significantly more than that of atoms. Any local breaking of the structure of highly excited crystals should be looked at not simply as a defect but as a new allowable structural state.…”

Section: Physical Mechanism Of Super-deep Penetration Of Solid Micropmentioning

confidence: 67%

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Physical mechanism of super-deep penetration of solid microparticles into solid targets

Jianjie

2014

Journal of the Mechanical Behavior of Materials

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The phenomenon of super-deep penetration of solid microparticles into solid targets under shock has not been interpreted convincingly until now. The concept of highly excited states, developed by V.E. Panin and others, has opened a new path for the interpretation of this phenomenon. According to this concept, under the condition of a highly excited state, the number of allowable structure states in crystals significantly exceeds the number of atoms, i.e., in crystals, new degrees of freedom arise. Highly excited crystals become, in essence, a superposition of several structures. Therefore, in highly excited states, the material of target may be looked at as a system of weakly interacting particles. The application of the theory of a system of weakly interacting particles in this article shows that when the velocity of penetrating particles exceeds the velocity of the thermal motion of particles of the target material, the friction coefficient is inversely proportional to the third power of the relative velocity of penetrating particles. In this way, the effect of losing friction in the penetration of solid particles into solid targets is interpreted.

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Section: Physical Mechanism Of Super-deep Penetration Of Solid Micropmentioning

confidence: 67%

“…The results of the last investigations carried out in refs. [9][10][11] represent a great progress in explaining this phenomenon.…”

Section: Introductionmentioning

confidence: 99%

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Physical mechanism of super-deep penetration of solid microparticles into solid targets

Jianjie

2014

Journal of the Mechanical Behavior of Materials

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“…Panin et al [56] described the regularities of mutual penetration of particles in composites "steel-copper-lead slip" and "iron-lead" under electrical impulse or shock-wave action. A theoretical interpretation of the observed effect was proposed on the basis of a multilevel approach of physical mesomechanics and the concept of atom-vacancy configurational excitations in strongly nonequilibrium systems.…”

Section: Mutual Mass Transfer Of Contacting Solid Metallic Substances Under External Energy Influencesmentioning

confidence: 99%

“…These assumptions can be avoided within the framework of a different formulation of the experiment-a multilevel description of the motion of a high-energy exposure front on the target and the consistent application of the concept of atom-vacancy configurational excitations [56]. When describing the two-level system "strongly excited crystal-equilibrium substrate", it is fundamentally important to consider the condition for compatibility of deformation at the interface between them.…”

Section: Mutual Mass Transfer Of Contacting Solid Metallic Substances Under External Energy Influencesmentioning

confidence: 99%

Laser Irradiation for Enhancing Mass Transfer in the Solid Phase of Metallic Materials

Murzin

2021

Metals

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Possibilities of using laser irradiation to enhance mass transfer in the solid phase of metallic materials in order to form structures with improved physical and mechanical properties were reviewed. The features of the diffusion mass transfer in metals and alloys under shock exposure were specified. In this case, the rate of diffusion processes of mass transfer can be significantly increased. The conditions for intensification of mass transfer in metallic materials by pulse-periodic laser irradiation were determined and the synthesis of nanoporous and composite oxide nanomaterials was described. A significant increase of the diffusion coefficient in a metallic material, in comparison to plain exposure to laser beam heating, was identified. It could be attributed to the synergy of heat exposure and laser-induced vibrations, mainly in the range of sound frequencies, as a result of a pulse-periodic laser irradiation. The condition for intensifying mass transfer in the solid phase of selectively oxidable metallic materials was identified as a non-stationary stress-strain state caused by laser-induced sound waves. The exploitation of this synergy effect permitted the implementation of a novel approach for the creation of structures of nanomaterials. At the same time, a targeted influence on mass transfer and the accompanying relaxation processes make it possible to achieve an increase in the efficiency of methods for processing metals and alloys.

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Physical mesomechanics of a deformed solid as a multilevel system. II. Chessboard-like mesoeffect of the interface in heterogeneous media in external fields

Panin

Моисеенко

2007

Physical Mesomechanics

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Physical mesomechanics of a deformed solid as a multilevel system. IV. Effect of particle interpenetration without continuity violation under the action of concentrated energy fluxes

Cited by 6 publications

References 8 publications

Physical mechanism of super-deep penetration of solid microparticles into solid targets

Physical mechanism of super-deep penetration of solid microparticles into solid targets

Laser Irradiation for Enhancing Mass Transfer in the Solid Phase of Metallic Materials

Physical mesomechanics of a deformed solid as a multilevel system. II. Chessboard-like mesoeffect of the interface in heterogeneous media in external fields

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