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The influence of geometric imperfections on the stability of three-layer beams with foam core

Iwona Wstawska
Published Online: 2017-06-10 | DOI: https://doi.org/10.1515/amtm-2017-0010


The main objective of this work is the numerical analysis (FE analysis) of stability of three-layer beams with metal foam core (alumina foam core). The beams were subjected to pure bending. The analysis of the local buckling was performed. Furthermore, the influence of geometric parameters of the beam and material properties of the core (linear and non-linear model) on critical loads values and buckling shape were also investigated. The calculations were made on a family of beams with different mechanical properties of the core (elastic and elastic-plastic material). In addition, the influence of geometric imperfections on deflection and normal stress values of the core and the faces has been evaluated.

Keywords : stability; buckling; three-layer beam; pure bending; FEM


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About the article

Received: 2017-04-03

Revised: 2017-05-27

Accepted: 2017-06-05

Published Online: 2017-06-10

Published in Print: 2017-01-26

Citation Information: Archives of Mechanical Technology and Materials, Volume 37, Issue 1, Pages 65–69, ISSN (Online) 2450-9469, DOI: https://doi.org/10.1515/amtm-2017-0010.

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© 2017. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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