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Оценка динамического эффекта при скачкообразном увеличении кольцевой трещины в цилиндре при его охлаждении

Оценка динамического эффекта при скачкообразном увеличении кольцевой трещины в цилиндре при его охлаждении

Abstract

В работе рассматривается квазистатическая задача термоупругости о мгновенном развитии кольцевой трещины в сплошном цилиндре под действием термоупругих напряжений, возникающих в этом цилиндре при его охлаждении. Скачкообразное увеличение кольцевой трещины связано с мгновенным снятием нагрузки на берегах увеличенной трещины, что приводит к динамическим эффектам. Приведена оценка динамических эффектов, показано, что они малы и, следовательно, правомочна квазистатическая постановка задачи.

A quasistatic thermoelsticity problem solution for an instant ring-shaped crack propagation in a solid cylinder under thermoelstic stresses arising in the one at its cooling is considered. Jump-like penny-shaped crack increasing is caused by an instant load relaxation at the banks of the increased crack which causes dynamic effects. Dynamic effects evaluation is given, it is shown that they are small and therefore a quasistatic statement of the problem is competent.

Keywords

ТЕРМОУПРУГОСТЬ, КОЛЬЦЕВАЯ ТРЕЩИНА, ОЦЕНКА ДИНАМИЧЕСКОГО ЭФФЕКТА

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average