Effect of Bimodularity on the Stress State of a Variable Cross-Section Reinforced Beam

Aleksey N. Beskopylny; Elena Kadomtseva; Vadim Poltavskii; Mikhail Lukianenko

doi:10.4028/www.scientific.net/MSF.974.646

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HomeMaterials Science ForumMaterials Science Forum Vol. 974Effect of Bimodularity on the Stress State of a...

Effect of Bimodularity on the Stress State of a Variable Cross-Section Reinforced Beam

Abstract:

The article is dedicated to the effect of different modulus of the material on the stress state of a beam of the variable rectangular cross section. The height of the beam varies linearly along its length. Formulas for calculating the maximum compressive and tensile stresses and determining the neutral line are obtained. The maximum tensile and compressive stresses are determined for the clamped and simply supported beams. The dependence of the maximum normal stress on the number of reinforcing bars located in the stretched zones is numerically investigated. The stress state of the beam is compared with and without consideration of the bimodularity of the material for simply supported and cantilever beams. It is shown that taking into account the bimodularity of the material significantly affects the maximum tensile and compressive stresses. The magnitude of the tensile stresses is increased by 30%; the magnitude of the compressive stresses is reduced by 21%. As a bimodular material, fibro foam concrete is considered in work.

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Periodical:

Materials Science Forum (Volume 974)

Pages:

646-652

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.974.646

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Online since:

December 2019

Authors:

Aleksey N. Beskopylny*, Elena Kadomtseva, Vadim Poltavskii, Mikhail Lukianenko

Keywords:

Beam, Bimodular Material, Reinforcement Bars, Stress-Strain State, Variable Section

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