To achieve weight reduction at low cost, a seat frame structure inautomotive vehicles made of polymer matrix composite(PMC) wasdeveloped. A samp1e seat frame structure was designed and analysedusing finite element analysis(FEM) in order to design andmanufacture. Analyses were done for several cases suggested invarious safety regulations of Federal Motor Vehicle SafetyStandards(FMVSS). Each result was utilized to modify the actual shapeto obtain a lighter, safer and more stable design. The strategy ofappropriate design was used to produce a sample bottom plate of theseat structure with reinforced by X-shape frame. It was found thatthe substitution of material by PMC resulted in a weight reductioneffect with equivalent strength and impact characteristics. Finally,the most desirable geometry for X-shaped frame was proposed to obtainthe effective performance.
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