Abstract
Railway vehicle has been required to achieve higher safety during its collision. In order to protect passengers during collision, energy absorber for crashworthy structure is developed using annealed aluminium alloy hollow extrusion. At first, to assure characteristics of annealed aluminium, tensile strength test and quasi-static crash test using column was carried out and these results revealed that annealed alloy has good characteristics for energy absorber. Second, box-shaped energy absorber was designed and quasi-static crash test was carried out. To predict crash characteristics of the absorber, numerical simulation was carried out in parallel to the experiment. As a result, load efficiency of the box energy absorber achieved 82% and numerical simulation had a good agreement with the results of experiment in deformation and crash characteristics. From above results, railway vehicle's characteristics in crashworthiness can be achieved higher performance with the absorber developed in the paper.
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