Effect of stress nonhomogeneity on the shear melting of a thin boundary lubrication layer; Physical Review E; Vol. 94, № 5
| Parent link: | Physical Review E: Scientific Journal Vol. 94, № 5.— 2016.— [053002, 6 p.] |
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| Institution som forfatter: | |
| Andre forfattere: | , , , |
| Summary: | Title screen We consider the dynamical properties of boundary lubrication in contact between two atomically smooth solid surfaces separated by an ultrathin layer of lubricant. In contrast to previous works on this topic, we explicitly consider the heterogeneity of tangential stresses, which arises in a contact of elastic bodies that are moved tangentially relative to each other. To describe phase transitions between structural states of the lubricant we use an approach based on the field theory of phase transitions. It is assumed that the lubricant layer, when stressed, can undergo a shear-melting transition of first or second order. While solutions for the homogeneous system can be easily obtained analytically, the kinetics of the phase transitions in the spatially heterogeneous system can only be studied numerically. In our numerical experiments melting of the lubricant layer starts from the outer boundary of contact and propagates to its center. The melting wave is followed by a wave of solidification. This process repeats itself periodically, following the stick-slip pattern that is characteristic of such systems. Depending on the thermodynamic and kinetic parameters of the model, different modes of sliding with almost complete or only partial intermediate solidification are possible. Режим доступа: по договору с организацией-держателем ресурса |
| Sprog: | engelsk |
| Udgivet: |
2016
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| Fag: | |
| Online adgang: | https://doi.org/10.1103/PhysRevE.94.053002 |
| Format: | MixedMaterials Electronisk Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=653718 |
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| 200 | 1 | |a Effect of stress nonhomogeneity on the shear melting of a thin boundary lubrication layer |f I. A. Lyashenko [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 49 tit.] | ||
| 330 | |a We consider the dynamical properties of boundary lubrication in contact between two atomically smooth solid surfaces separated by an ultrathin layer of lubricant. In contrast to previous works on this topic, we explicitly consider the heterogeneity of tangential stresses, which arises in a contact of elastic bodies that are moved tangentially relative to each other. To describe phase transitions between structural states of the lubricant we use an approach based on the field theory of phase transitions. It is assumed that the lubricant layer, when stressed, can undergo a shear-melting transition of first or second order. While solutions for the homogeneous system can be easily obtained analytically, the kinetics of the phase transitions in the spatially heterogeneous system can only be studied numerically. In our numerical experiments melting of the lubricant layer starts from the outer boundary of contact and propagates to its center. The melting wave is followed by a wave of solidification. This process repeats itself periodically, following the stick-slip pattern that is characteristic of such systems. Depending on the thermodynamic and kinetic parameters of the model, different modes of sliding with almost complete or only partial intermediate solidification are possible. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Physical Review E |o Scientific Journal | ||
| 463 | |t Vol. 94, № 5 |v [053002, 6 p.] |d 2016 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
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| 610 | 1 | |a граничные смазочные слои | |
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| 701 | 1 | |a Lyashenko |b I. A. |g Iakov Aleksandrovich | |
| 701 | 1 | |a Filipov |b A. E. |g Aleksandr | |
| 701 | 1 | |a Popov |b M. |c physicist |c assistant at Tomsk Polytechnic University |f 1987- |g Mikhail |3 (RuTPU)RU\TPU\pers\36018 | |
| 701 | 1 | |a Popov |b V. L. |c physicist |c leading researcher of Tomsk Polytechnic University, Doctor of physical and mathematical sciences |f 1959- |g Valentin Leonidovich |3 (RuTPU)RU\TPU\pers\35915 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет (ТПУ) |b Институт физики высоких технологий (ИФВТ) |b Кафедра физики высоких технологий в машиностроении (ФВТМ) |3 (RuTPU)RU\TPU\col\18687 |
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