Impact of elasticity of polymer filler of three-layer cylindrical structure of elliptical section on its behavior under internal impulse loading

Authors

DOI:

https://doi.org/10.32347/2410-2547.2022.109.467-472

Keywords:

three-layer cylindrical shell, polymer filler, finite element model, elliptical cross section, impulsive axisymmetric load, finite element method

Abstract

The impact of the elasticity of the polymer filler of a three-layer cylindrical structure of normal elliptical cross-section on its stress-strain state under internal impulse loading was studied. Determined values and distribution of normal deflections  and stresses  in sections S1 and S2. The finite-element method of calculating the stress-strain state (SSS) of such a structure by the software-calculation complex Fimap with NX Nastran was applied. Conclusions were made regarding the sufficient expediency of considering the elasticity of the filler when optimizing the design of such structures.

Increasing the elasticity of the polymer filler increases the strength and monolithicity of the layered structure. The use of this method ensures efficiency and is appropriate when the ratio of elasticity of the materials of the layers and filler is Е1.3 /Еt ≤50.

Author Biographies

Viktor Gaidaichuk, Kyiv National University of Construction and Architecture

Doctor of Technical Sciences, Professor, Head of the Department of Theoretical Mechanics

Kostiantyn Kotenko, Kyiv National University of Construction and Architecture

Candidate of Technical Sciences, Associate Professor of the Department of Theoretical Mechanics

References

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Gaidaichuk V.V., Kotenko K.E. Stress-strain state of a three-layer cylindrical shell under internal axisymmetric pulse load с Strength of Materials and Theory of Structures. – 2020. – Issue. 105. – Р. – 145-151.

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Segerlind L. Primeneniemetodakonechnyihelementov (Application of the finite element method). M.: Mir, 1979- 392 p.

Rychkov S.P. Modelirovanie konstruktsiy v srede Femap with NX Nastran (Structural modeling in Femap with NX Nastran). M.: DMK Press, 2016.-784 p.

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Published

2022-11-11

Issue

No. 109 (2022)

Section

Статті

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