Abstract
When a carbody is damaged significantly in the event of a level crossing accident, the train cannot be used for an extended period of time due to the restoration of it. Aiming to achieve early restoration of a carbody following such an accident, level crossing accident simulations were performed regarding a replaceable crash-energy absorbing structure for a railway carbody made of aluminum alloy for use on conventional lines. In this paper, as a fundamental study of the crash-energy absorbing structure obtained above, the crash absorbing element that maintains a load of approximately 250kN was examined. After studying various combinations of aluminum alloy cylindrical tubes, etc. using finite element analyses, prototype crash absorbing elements were developed. Finally, we performed the drop weight impact tests for the prototype elements to evaluate their performance.
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