Дислокационные неупругие явления при различных уровнях задемпфированности
Численными методами изучена динамика установившихся колебаний единичной дислокационной петли в широком интервале частот вынужденных колебаний и при различных уровнях задемпфированности.Получены зависимости дислокационной деформации и рассеиваемой мощности от внешнего напряжения при различных уровнях...
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Дата: | 2000 |
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Формат: | Стаття |
Мова: | Russian |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2000
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Назва видання: | Физика низких температур |
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Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/129051 |
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Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
Цитувати: | Дислокационные неупругие явления при различных уровнях задемпфированности / В.Я. Белошапка, В.Г. Гурьянов, В.Я. Платков // Физика низких температур. — 2000. — Т. 26, № 3. — С. 294-303. — Бібліогр.: 22 назв. — рос. |
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irk-123456789-1290512018-02-06T18:43:42Z Дислокационные неупругие явления при различных уровнях задемпфированности Белошапка, В.Я. Гурьянов, В.Г. Платков, В.Я. Низкотемпературная физика пластичности и прочности Численными методами изучена динамика установившихся колебаний единичной дислокационной петли в широком интервале частот вынужденных колебаний и при различных уровнях задемпфированности.Получены зависимости дислокационной деформации и рассеиваемой мощности от внешнего напряжения при различных уровнях задемпфированности. Изучены амплитудные зависимости таких интегральных характеристик динамики движения дислокаций, как внутреннее трение, дефект модуля упругости и их отношение. Установлено критическое значение уровня задемпфированности дислокационной петли, начиная с которого дислокационный гистерезис теряет статические и приобретает динамические черты. Исследованы особенности формирования дислокационного гистерезиса в условиях его трансформации от статического типа к динамическому. A numerical investigation is made into the dynamics of steady-state oscillations of an isolated dislocation loop over a wide interval of forced oscillation frequencies and at different levels of damping. The dependence of the dislocation-related strain and power dissipation on the external stress is found for different levels of damping. The amplitude dependences of such integral characteristics of the dynamics of dislocation motion as the internal friction, the elastic-modulus defect, and the ratio of the two are investigated. A critical value of the damping level of the dislocation loop is found at which the dislocation hysteresis begins to lose its static character and starts to take on dynamic traits. The features of the formation of dislocation hysteresis under conditions of its transformation from a static to a dynamic type are established. 2000 Article Дислокационные неупругие явления при различных уровнях задемпфированности / В.Я. Белошапка, В.Г. Гурьянов, В.Я. Платков // Физика низких температур. — 2000. — Т. 26, № 3. — С. 294-303. — Бібліогр.: 22 назв. — рос. 0132-6414 PACS: 74.25.Ld, 61.72.Hh, 62.40.+i http://dspace.nbuv.gov.ua/handle/123456789/129051 ru Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
collection |
DSpace DC |
language |
Russian |
topic |
Низкотемпературная физика пластичности и прочности Низкотемпературная физика пластичности и прочности |
spellingShingle |
Низкотемпературная физика пластичности и прочности Низкотемпературная физика пластичности и прочности Белошапка, В.Я. Гурьянов, В.Г. Платков, В.Я. Дислокационные неупругие явления при различных уровнях задемпфированности Физика низких температур |
description |
Численными методами изучена динамика установившихся колебаний единичной дислокационной петли в широком интервале частот вынужденных колебаний и при различных уровнях задемпфированности.Получены зависимости дислокационной деформации и рассеиваемой мощности от внешнего напряжения при различных уровнях задемпфированности. Изучены амплитудные зависимости таких интегральных характеристик динамики движения дислокаций, как внутреннее трение, дефект модуля упругости и их отношение. Установлено критическое значение уровня задемпфированности дислокационной петли, начиная с которого дислокационный гистерезис теряет статические и приобретает динамические черты. Исследованы особенности формирования дислокационного гистерезиса в условиях его трансформации от статического типа к динамическому. |
format |
Article |
author |
Белошапка, В.Я. Гурьянов, В.Г. Платков, В.Я. |
author_facet |
Белошапка, В.Я. Гурьянов, В.Г. Платков, В.Я. |
author_sort |
Белошапка, В.Я. |
title |
Дислокационные неупругие явления при различных уровнях задемпфированности |
title_short |
Дислокационные неупругие явления при различных уровнях задемпфированности |
title_full |
Дислокационные неупругие явления при различных уровнях задемпфированности |
title_fullStr |
Дислокационные неупругие явления при различных уровнях задемпфированности |
title_full_unstemmed |
Дислокационные неупругие явления при различных уровнях задемпфированности |
title_sort |
дислокационные неупругие явления при различных уровнях задемпфированности |
publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
publishDate |
2000 |
topic_facet |
Низкотемпературная физика пластичности и прочности |
url |
http://dspace.nbuv.gov.ua/handle/123456789/129051 |
citation_txt |
Дислокационные неупругие явления при различных уровнях задемпфированности / В.Я. Белошапка, В.Г. Гурьянов, В.Я. Платков // Физика низких температур. — 2000. — Т. 26, № 3. — С. 294-303. — Бібліогр.: 22 назв. — рос. |
series |
Физика низких температур |
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first_indexed |
2025-07-09T10:29:28Z |
last_indexed |
2025-07-09T10:29:28Z |
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fulltext |
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