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Influence of polymer aggregate reinforcement on the dynamics of three-layer cylindrical structure of elliptical cross-section

Influence of polymer aggregate reinforcement on the dynamics of three-layer cylindrical structure of elliptical cross-section

Abstract

The dynamic behavior of a three-layer cylindrical structure of normal elliptical cross-section with a discrete polymer filler under internal non-stationary loading was investigated. A finite element model of the structure was created and calculations of normal deflections and normal stresses of its bearing layers were performed using a software and calculation complex Fimap with NX Nastran. The values of deflections and stresses of the specified layers in the absence and presence of reinforcement of the polymer aggregate structure at the ratio of elasticity of the material of bearing layers and aggregate are given E1,2/Et=500. Reinforcement of polymer aggregate with metal stiffening ribs significantly affects the dynamic behavior of the three-layer cylindrical structure. The presence of this factor synchronized the stress-strain layer of the bearing layers of the structure, reduced the values of normal deflections and stresses of the bearing layers of the cylindrical three-layer structure. The effectiveness of reinforcement of polymer aggregate is confirmed by other materials, which indicates the feasibility of the practical use of such a constructive measure.

Досліджена динамічна поведінка тришарової циліндричної структури нормального еліптичного перетину з дискретним полімерним заповнювачем при внутрішньому нестаціонарному навантаженні. Створена скінченно-елементна модель структури і виконані розрахунки нормальних прогинів і нормальних напружень її несучих шарів програмно-розрахунковим комплексомFimapwithNXNastran. Приведені величини прогинів і напружень указаних шарів при відсутності і наявності армування полімерного заповнювача структури при співвідношенні пружності матеріалу несучих шарів і заповнювача E1,2/Et=500. Армування полімерного заповнювача металевими ребрами жорсткості значно впливає на динамічну поведінку тришарової циліндричної структури. Наявність цього фактора синхронизувала напруженно-деформований шар несучих шарів структури, зменшило величини нормальних прогинів і напружень несучих шарів циліндричної тришарової структури. Ефективність армування полімерного заповнювача підтверджують і інші матеріали, що свідчить про доцільність практичного використання такого конструктивного заходу.

Keywords

finite element model, three-layer cylindrical shell, полімерний заповнювач, impulse load, еліптичний перетин, імпульсне навантаження, elliptical section, тришарова циліндрична оболонка, несучий шар, скінченно-елементна модель, bearing layer, polymer aggregate

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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
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gold