内部骨組を活用した鉄道車両の車体剛性向上(<特集>D&D2009)

概要

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In this study, the authors have investigated how non-structural members in the carbody influence on the rigidity and the vibration characteristics of a commuter type railway vehicle. "Inner ring" sub-structures, which are composed of reinforcing beams on the floor, side and roof structures and evaluated in the previous study, are attached to "Rigidity Test Car", which have been designed and manufactured for above purpose. Static load and excitation tests have been performed, and the results have shown that the proposed inner rings have largely affected the natural frequencies, vibration shapes and response accelerations of the carbody. The additional mass have been then reduced by replacing the whole inner rings with just the ceiling frames aiming at putting them to practical use. It have been verified that the rails for hand straps are also effective to improve the rigidity of the carbody when these are properly attached to the carbody.
2010-05-25