Abstract
The seats for high speed railway vehicle have vibration characteristics which induce high frequency and torsional vibration. That has a possibility to disturb the ride comfort. To analyze the vibration mechanisms and to obtain useful findings for seat design considering ride comfort, the seat model which has nine-degree-of-freedom is proposed. Backrest and seat-base of the seat are modeled in the simulation model, which includes pitch motion components of backrest, vertical, longitudinal, pitch, roll and yaw motions of seat-base. It can describe the vibration characteristics of the seat against the floor acceleration input. In this report, the seat vibration simulation is conducted by using the proposed seat model with the goal of decreasing high frequency vibration. From the result, the relationship between model parameters and vibration characteristics of the seat is investigated.
