Abstract
In this research work, the effect of lateral loading (LL) on the crushing performance of empty tubes (ETs) and ex situ aluminum foam-filled tubes (FFTs) was investigated at 300 °C. The cylindrical thin-walled steel tube was filled with the closed-cell aluminum alloy foam that compressed under quasi-static loading conditions. During the compression test, the main mechanical properties of the ETs improved due to the interaction effect between the cellular structure of the foam and the inner wall of the empty tube. In addition, the initial propagated cracks on the steel tubes reduced considerably as a result of such interaction. Furthermore, the obtained results of the LL loading were compared with the axial loading (AL) results for both ETs and FFTs at the same temperature. The findings indicated that the application of loading on the lateral surface of the composite causes the lower mechanical properties of both ETs and FFTs in comparison with the axial loading conditions.
Highlights
IntroductionCompared to fully-dense solid metals, metallic foams are a new class of ultra-lightweight structural materials that are highly valued in recent years in many crucial engineering fields (such as aircraft, spacecraft, vehicles, and ships), due to their excellent performances in energy absorbing and mechanical damping [1,2,3,4]
Compared to fully-dense solid metals, metallic foams are a new class of ultra-lightweight structural materials that are highly valued in recent years in many crucial engineering fields, due to their excellent performances in energy absorbing and mechanical damping [1,2,3,4]
From the obtained F-∆ curves, three different regions were found similar to other foams and composite foam structures [32]: a linear-elastic region up to a displacement value of 0.75 mm; followed by a plateau region with a slight increase in load where the most important collapse mechanism has occurred; and, ends with a densification region with a significant increase in load
Summary
Compared to fully-dense solid metals, metallic foams are a new class of ultra-lightweight structural materials that are highly valued in recent years in many crucial engineering fields (such as aircraft, spacecraft, vehicles, and ships), due to their excellent performances in energy absorbing and mechanical damping [1,2,3,4]. Mechanical response and energy absorption of aluminum foam-filled and empty circular tubes with different geometries were investigated by [20]. Goel [21] carries out deformation and energy absorption studies with single, double, and multi-wall square and circular tube structure with and without aluminum foam cores for assessing its effectiveness in crashworthiness under identical test conditions
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