Optimization and Experimental Investigation of the Ability of New Material from Aluminum Casting on Pumice Particles to Reduce Shock Wave

  • Masoud Rahmani
    Affiliation

    Department of Mechanical Engineering, Tehran University, Tehran, P. O. B. 14155-6619, Iran

  • Amin Moslemi Petrudi
    Affiliation

    Department of Mechanical Engineering, Tehran University, Tehran, P. O. B. 14155-6619, Iran

Abstract

Some materials, due to their inherent properties, can be used as shock and wave absorbers. These materials include foam and porous materials, in this study, specimens were made by casting aluminum on porous mineral pumice. Which can replace aluminum foam in some applications with lesser cost, at first, the material is compared with aluminum foam using compression test and quasi-static loading diagram. Which compares the diagrams of these two materials showing the similarity of their behavior in quasi-static loading. Initially, the elastic bending of the walls causes an elastic region in the stress-strain curve of the material. Then, the plastic collapsing of the cells forms a large and relatively smooth region along the elastic and after the plastic collapse of the cells, the area known as foam densification begins where the density of the foam closer to the density of its constituent material causes a sudden increase in the stress level in the specimen. These steps have also been seen in the quasi-static loading of aluminum foam. Then, by using numerical simulations with ANSYS AUTODYN and the shock tube test the ability of these specimens were investigated to reduce the shock wave. The behavior of the material in this case is also very similar to the results of previous studies on aluminum foam.

Keywords: aluminum foam, porous materials, casting aluminum, experimental test
Published online
2020-06-30
How to Cite
Rahmani, M., Moslemi Petrudi, A. “Optimization and Experimental Investigation of the Ability of New Material from Aluminum Casting on Pumice Particles to Reduce Shock Wave”, Periodica Polytechnica Mechanical Engineering, 64(3), pp. 224-232, 2020. https://doi.org/10.3311/PPme.15983
Section
Articles