Relationship between vibration characteristics and shape of cross section of aluminum alloy double skin structure for a car body

Abstract

The authors analyze the vibration characteristics and the bucking forces of aluminum alloy double skin structures, utilized for a car body of high-speed railway vehicles. These characteristics vary according to the shapes of the double skin structures. Then the relationships between these characteristics and the shape of the cross section of the double skin structures are investigated with calculations using Finite Element Method. The results show that the natural frequencies become lower and the bucking force becomes less when the height of the double skin structure is greater.