3301 A measurement test of vibration characteristics of railway vehicle as three dimensional structure

Abstract

Experimental result from a series of vibration measurement test of real railway vehicle is presented in this report. In the measurement test, both stationary vibration test using electrodynamic exciter and running test were carried out to investigate the vibration characteristics of the carbody as three dimensional structure. The effects of support condition of the carbody and running velocity upon the vibration response are discussed, and the modal characteristics are described, too. It is found that the eigenfrequencies concerning to the vibration of floor increase according to the supporting condition changes from block support to air spring support. It is also shown that the vibration of this carbody is complex and the roof and the floor looks to vibrate independently.