인체 진동 모델을 이용한 시트 동적 설계

Abstract

This paper deals with the design of a car seat for enhancing dynamic ride quality using a biomechanical model that was developed from the measured whole-body vibration characteristic, For evaluation of seat ride quality, the z-axis acceleration of floor as an input of biomechanical model was measured on a driving passenger car at highway and national road. From the floor signal and the estimated biomechanical model, overall ride value is evaluated by parameter study of seat stiffness and damping. The result shows that overall ride value decreases as the seat damping increases and the seat stiffness decreases. A lot of polyurethane foams were manufactured and tried to evaluate dynamic ride quality of a seat. It is found that stiffness and damping of a seat show a linear relationship, which means the stiffness and damping are not independent each other. So the optimal seat parameters within practically achievable space are determined.