Experimental and Numerical Study of Bending Behavior of Sandwich Beams with Steel Surfaces and Elastomeric Core

Document Type : Research Article

Authors

1 Master of Science, Civil and Environmental Engineering Department, Amirkabir University of Technology, ‎Tehran, Iran‎

2 Instructor, Master of Science, Shahid Bahonar Technical and Engineering College, Shiraz, Iran ‎

Abstract

Sandwich plate manufacturing technology is evolving day by day and it has led to the higher strength ‎and load-bearing capacity of new fabricated models in comparison to previous models. Due to ‎their high ratio of strength to weight and great energy absorption characteristic, they are widely used in various ‎industries including aerospace, marine, and bridge construction. However, the problem with most of these types of ‎plates is that the core crushes due to loading and thus leads to beam failure. In the present study, the load-bearing ‎capacity and ultimate strength of a novel type of sandwich beam with steel faces and elastomeric foam core are numerically and experimentally investigated. The use of this type of core in sandwich beams has not been ‎reported in previous research. Although elastomeric foams have a lower modulus of elasticity, they show reversible ‎behavior in large deformations, and therefore they can be used in structures such as bridges, where high absorption ‎of energy is expected. In this paper, by fabricating sandwich panels, in addition to determining the mechanical ‎properties of materials, the effect of adding elastomeric core on the deformation of the sandwich beam and its ‎energy absorption was studied; Furthermore, the simulation of sandwich structure and steel plates under three-point bending load was done with the help of Abacus software. Experimental and parametric studies showed ‎that ‎there ‎is good compliance between experimental investigations and numerical results. Thus, it can be considered ‎as a bridge deck in larger dimensions in future studies.  ‎

Keywords

Main Subjects

References

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Amirkabir Journal of Civil Engineering
Volume 53, Issue 11
February 2022
Pages 4743-4766

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