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Применение метода последовательных нагружений при решении задач механики плоских стержней

Применение метода последовательных нагружений при решении задач механики плоских стержней

Abstract

При решении задач о нагружении конструкций, содержащих стержневые элементы, часто приходится иметь дело с большими (соизмеримыми с длиной стержня) перемещениями таких элементов. В механике деформируемого твердого тела разработан ряд методов решения нелинейных задач, применимых к расчету как пластин, оболочек, мембран, так и стержней. В статье рассмотрен относительно простой и достаточно точный для повседневной инженерной практики метод последовательных нагружений для решения плоских задач механики стержней. Представлены результаты численного исследования примеров нагружения стержней различными силами, для которых в научной литературе приведены точные аналитические решения, и наглядно продемонстрирована точность предлагаемого метода решения подобных задач. Приведенный метод численного исследования глубокого деформирования плоского стержня достаточно легко может быть распространен и на конструкции в виде пространственных стержней сколь угодно сложной геометрии. Данная тематика может быть интересна специалистам в области механики стержней.

When solving problems of loading of structures comprising rod elements, one often has to deal with large displacements of these elements (i.e. commensurate with the length of the rod). A number of methods for solving nonlinear problems applicable to the calculation of plates, shells, membranes, as well as rods, has been developed in the mechanics of deformable solids. This article describes a relatively simple method of successive loadings to solve the plane problems of the mechanics of rods that is accurate enough for everyday engineering practice. The results of numerical studies of the rods exposed to different loads are presented, for which exact analytical solutions are available in the literature. The accuracy of the proposed method of solving such problems is demonstrated. The described method of numerical investigation of deep deformation of flat rods can be easily applied to studying constructions of spatial rods of arbitrarily complex geometry. This topic may be of interest to specialists in the field of mechanics of rods.

Keywords

МЕТОД ПОСЛЕДОВАТЕЛЬНЫХ НАГРУЖЕНИЙ,ПЛОСКИЙ СТЕРЖЕНЬ,НЕЛИНЕЙНАЯ СИСТЕМА УРАВНЕНИЙ,СВЯЗАННЫЙ БАЗИС,ДЕКАРТОВ БАЗИС,МАТРИЦА ПРЕОБРАЗОВАНИЯ,ВЕКТОР СОСТОЯНИЯ,ЛИНЕАРИЗОВАННАЯ СИСТЕМА УРАВНЕНИЙ,ШАГ ПО НАГРУЗКЕ,METHOD OF SUCCESSIVE LOADING,FLAT ROD,NONLINEAR SYSTEM OF EQUATIONS,ASSOCIATED BASIS,CARTESIAN BASIS,TRANSFORMATION MATRIX,STATE VECTOR,LINEARIZED SYSTEM OF EQUATIONS,STEP LOAD

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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
bronze