Document Type : Research Article
Master of Science, Civil and Environmental Engineering Department, Amirkabir University of Technology, ‎Tehran, Iran‎
Instructor, Master of Science, Shahid Bahonar Technical and Engineering College, Shiraz, Iran &lrm;
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.