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Energy Absorption of Foam-filled Steel Extrusion under Quasi- Static Oblique Loading
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ismail, Al Emran Hussein, Tun |
| Copyright Year | 2008 |
| Abstract | The structures of the vehicle during the crushing processes or accidents are not only experienced directly or axially collisions but sometime these structures are crushed off-axially. Therefore, it is very crucial things to study whether or not a foam-filled column capable to support the oblique compression forces efficiently and effectively. In this work, polyurethane foams with different densities are filled into steel extrusion tubes. Foam densities used are 100, 200 and 300 kg/m 3 . High attentions are given during the process of fabricating the foamfilled structures due to high pressure resulted from the chemical reactions in order to minimize the pressure loss which interrupted the foaming processes. Different wall thicknesses are used ranging between 1.0 to 3.0mm. The foam-filled structures are compressed quasi-statically at constant cross-head displacement at 10mm/min. During the crushing process, all the structures are aligned obliquely at 0 ° , 5 ° , 10 ° and 15 ° . Experimental results showed that both foam density and wall thicknesses are the key factor in determining the crashworthiness behaviors but when the structures are exposed to the oblique loading, energy absorption capability decreased accordingly as loading angles increased. This decrement is due to high bending moment applied to the structures and it is also act as crush initiator and the introduction of oblique loading only affected in the region of elastic deformation but when the deformation reaches plastic region no significant effect is observed. All the structures are progressively collapse with different wave-length of the lobes. From the observation of sectioned samples used, there is good interaction between foam and wall observed for higher density polymeric foam resulted in higher energy absorption performances. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://ijet.feiic.org/journals/J-2008-V1002.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
