Applied Mechanics and Materials Vol. 680

Abstract: The purpose of this paper is to develop a lightweight automotive seat back frame structure using CFRP (Carbon Fiber Reinforced Plastic). The shape of CFRP seat back frame was determined so that its manufacturing could be performed in a single process without additional fastening. Three different kinds of analyses were performed to confirm that CFRP seat frame could satisfy FMVSS (Federal Motor Vehicle Safely Standards) requirements. The results of finite element analyses showed that its maximum stresses were 51.1 to 95.5 % of those of steel seat frame structure. Its mass was 56.2% of that of steel seat back frame. CFRP seat frame can provide better fuel economy as well as improved safety.