Investigation of Vibration Damping in the Passenger Seat Constructions

Abstract

Under the lights of scientific studies, it is known that the vibration has significant effects on living creatures and non-living things. Human body faces with many different vibrations daily. The aim of this study is to provide comfortable and healthy travel by decreasing the vibration coming from the chassis of the intercity buses and to protect the feet of the passengers from vibrationbased threats by producing the amortization in footboards of the seats in harmony with developing technology. In existing vehicles, the leg constructions of the seats are in rigid structure. For this purpose, the experimental modal analysis has been carried out by utilizing impact test method. These measurements were firstly taken as a whole once the legs were mounted on the seat. Then the measurements were carried out only on the legs. As a result of experimental modal analysis, for both of the legs, the FRF (Frequency Response Function) graphics in X, Y and Z directions and the damping rates were obtained. By comparing these graphics and damping rates for both of the legs, the result was obtained. As a result of the experimental studies, it has been observed that the casting legs have decreased the vibration on passenger by damping it more than original legs do.