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Ползучесть и повреждаемость пологих оболочек сложной формы из материалов с характеристиками, зависящими от вида нагружения

Ползучесть и повреждаемость пологих оболочек сложной формы из материалов с характеристиками, зависящими от вида нагружения

Abstract

Статья посвящена исследованию ползучести и повреждаемости пологих изотропных оболочек сложной формы в плане, из материалов с характеристиками, зависящими от вида нагружения. В постановке задачи используются определяющие соотношения, описывающие дислокационную ползучесть первоначально изотропных материалов с характеристиками, зависящими от вида нагружения, ассоциированную с образованием и ростом плоских микротрещин с преимущественной ориентацией. Начально-краевая задача ползучести и повреждаемости решается с помощью совместного использования методов R-функций, Ритца и Рунге-Кутта-Мерсона. Исследовано влияние направления внешней нагрузки на ползучесть, повреждаемость и длительную прочность сферической пологой оболочки сложной формы. The paper is devoted to the investigation of creep and damageability of isotropic shallow shells with complex shape made from materials with characteristics dependent on the kind of loading.For the formulation of the problem are used the constitutive equations which describe the dislocation creep of initially isotropic materials with characteristics dependent on the kind of loading, associated with the nucleation and growth of planar microcracks with the preferred orientation. A method for solving of the non-linear initial-boundary value problem of creep and damageability is based on the combined application of the R-functions, Ritz and the Runge-Kutta-Merson methods. The influence of the direction of the external load on the creep, damageability and long-term strength of spherical shallow shell with complex shape has been investigated.

Related Organizations
Keywords

метод R-функций, damageability, R-functions method, ползучесть, время, time to fracture, повреждаемость, shallow shell, разрушение, оболочка пологая, creep

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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
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