Ergonomic design optimization for train seat fit parameters

This study is aimed at seat design optimization for high-speed train based on the Malaysians sitting anthropometry data focusing on seat fit parameters. An analysis of anthropometry data composed of 15 dimensions that are required in seat design was done with 50 male subjects. These data were collected through direct measuring methods with standard equipment. According to the Malaysian automotive seat fit parameters, the backrest width, backrest height, cushion width, and cushion length were established based on these anthropometric dimensions: interscye breadth (5th percentile female and 95th percentile male), hip breadth (95th percentile female), sitting shoulder height (5th percentile female), and buttock-popliteal length (5th percentile female), respectively. This study uses the CATIA software to design and analyse the proposed seat design. The fit parameters proposed for the new design are seat height, 380mmcushion width, 450mmbackrest width, 450mm and backrest height, 850mm. The CATIA human activity analysis (based on Rapid Upper Limb Analysis, RULA) was also executed. From the study, the new conceptual seat design gives the most optimized fit when compared to the current seat