Compressive Behavior and Energy Absorption Capability of Reinforced Closed-Cell Aluminum Alloy Foams

7th International Conference on Advanced Materials and Structures

Linul, E.^1 ; Marsavina, L.^1 ; Kovacik, J.^2

Department of Mechanics and Strength of Materials, Politehnica University of Timisoara, 1 Mihai Viteazu Avenue, Timisoara

300 222, Romania^1

Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava

845 13, Slovakia^2

关键词: Absorption performance;    Aluminum alloy foams;    Compression strength;    Compressive behavior;    Energy absorption capability;    Lightweight composites;    Reinforcement effects;    Stainless steel mesh;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/416/1/012079/pdf
DOI  :  10.1088/1757-899X/416/1/012079

来源: IOP

【 摘 要 】

In recent years aluminum foams and lightweight composite structures with foam core became popular in aerospace as well as in the automotive industry, because of their unique mechanical properties combined with a very low density. This paper investigates and compares the mechanical behavior, the collapse modes and energy absorption capability of unreinforced and reinforced (with 2 different reinforcement positions) aluminum foam composite structures. Quasi-static compressive tests have been undertaken under three different directions and the reinforcement effect on the main mechanical properties (Young's modulus, yield stress, plateau stress and densification) was investigated. The tested closed-cell aluminum alloy foams with a density of 325 kg/m3 were reinforced with stainless steel mesh. It has been shown that the compression strength and energy absorption performances of the composite foams can be optimized through the correct positioning of the reinforcements.