A composite chassis for a formula student vehicle Online publication date: Mon, 30-Apr-2018
by Ricardo Ferreira; Luís Sousa; Virgínia Infante
International Journal of Automotive Composites (IJAUTOC), Vol. 3, No. 2/3/4, 2017
Abstract: The present work aims to analyse different types of chassis used in Formula Student vehicles. This analysis is done under the same circumstances for all structures: the suspension lines and packaging of main components are fixed. A value for torsional stiffness is estimated based on the car's handling. A tubular space frame from previous prototype is re-analysed using structural optimisation methods, aiming for weight reduction while considering the new torsional stiffness target. This new arrangement is used as a benchmark with the composite structures. An overview of the used type of composite materials is presented, the equivalency process is explained and a model to identify lay-ups for the different zones is developed. Several arrangements are analysed for the semi-monocoque and monocoque structures, considering vacuum infusion and Prepreg. A local study is developed to define monocoque's pickup inserts points dimensions. A study is performed on bonded joint along the vacuum infusion.
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