Experimental Study on Influence of Edge Constraint and Mass Distribution Upon Elastic Vibration of Rectangular Cylindrical Shell Structure

Abstract

In this study, the elastic vibration characteristics of the square tubular structure simulated with about 1/10 size of the railway car body are investigated in detail. The influence of end restraints and mass distribution on the floor, which are likely to affect the structural change, was examined, and the plan of structural modification to reduce the elastic vibration of this structure was discussed. The results of experimental modal analysis suggest that the structure under study has a strong tendency to vibrate independently of the frame and the upper structure, and it is also confirmed that the deformation of the upper structure is large.