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허승진(Seung-Jin Heo),이종현(Jong-Hyun Lee),구정서(Jeong-Seo Koo) 한국철도학회 1998 한국철도학회 학술발표대회논문집 Vol.- No.-
The crushable front part of the conventional TGV is composed of 3 energy absorption zones; retractable coupler, protective headstock and honeycomb structure. This frontal part must absorb about 80% of the energy that should be done in a crashworthy design. The conventional TGV can absorb 2MJ impact energy by the frontal end, but 5MJ is the design target for energy absorption in the next generation TGV. To accomplish this design goal, a new concept of design is necessary for energy absorbing components. In this paper, the design concept of the tube expansion energy absorber will be proposed and analyzed. The crash analysis of the energy absorber are performed by comparing the value of the theoretical equation with the simulation calculated from the commercial nonlinear FE-Code "PAM-CRASH" S/W.