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Formula SAE Chassis Design to Improve Suspension Tuning
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 25, 2016 by SAE International in United States
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In many vehicle motorsport categories, the one of the most important factors that lead a team to the victory is the suspension setup. Parameters like roll stiffness and camber changing are essential to the vehicle behavior during a driving situation. To handle these variables, features like suspension hardpoints arrangement, pivot points position and spring stiffness can be settled. However a setup only will perform a desirable effect if the chosen configuration does not change. Ideally, to make it possible, every component that holds suspension loads (suspension members, mounting plates and chassis) would have to be infinitely rigid. Even though it is not achievable, the existing deformation can be small enough to be negligible when compared with suspension displacement. In order to reach this target, this paper introduce a spring modeling and a Finite Element multibody modeling process of a Formula SAE prototype’s suspension and chassis. These models allows the investigation of chassis elasticity effect on suspension’s operation properties. Furthermore, the data obtained are essential to set the chassis torsional stiffness target and the final suspension’s pick-up points geometries, avoiding an oversized design. To validate the model a bench test was performed to obtain a correlation between the real case and Finite Element model, which reached a value of 98,2% and allowed the removal of excessive torsional stiffness and a mass reduction of 9%. In addition, the study allowed to identify a critical stress point and a reinforcement was added.
CitationBortoluzzi, L., Schommer, A., Martins, M., and Buenos, A., "Formula SAE Chassis Design to Improve Suspension Tuning," SAE Technical Paper 2016-36-0239, 2016, https://doi.org/10.4271/2016-36-0239.
- Tebby , S. , Esmailzadeh , E. , Barari , A. Methods to Determine Torsion Stiffness in an Automotive Chassis Computer Aided Design and Applications 2011
- Singh , R. P. Structural Performance Analysis of Formula SAE Car Jurnal Mekanikal 2010
- Riley , W. B. and George , A. R. Design, Analysis and Testing of a Formula SAE Car Chassis SAE Technical Paper 2002-01-3300 2002 10.4271/2002-01-3300
- Limwathanagura , T. , Sithananun , C. , Limchamroon , T. , Singhanart , T. The Frame Analysis and Testing for Student Formula World Academy of Science, Engineering and Technology 2012
- Gaffney , E. F. and Salinas , A. R. Introduction to Formula SAE Suspension and Frame Design SAE Technical Paper 971584 1997
- Schommer , A. , Soliman , P. , Farias , L. T. , Martins , M. Analysis of a Formula SAE Vehicle Suspension: Chassis Tuning SAE Technical Paper 2015-36-0275 2015 10.4271/2015-36-0275
- Milliken , W. F. and Douglas , M. L. Race Car Vehicle Dynamics SAE Inc. 1995
- Botosso , A. C. Desenvolvimento Preliminar de Estrutura Tubular para Veículo de Fabricação Artesanal Escola Politécnica da Universidade de São Paulo 2010
- Comerford , L. Design Improvement Study of a Kit Car Suspension and Chassis Arrangement The University of Manchester 2005
- Van Burken , A. Chassis and suspension design FSRTE02 Technische Universiteit Eindhoven 2006
- Filho , A. A. Elementos Finitos A Base da Tecnologia CAE Érica 2000
- Schommer , A. G. Desenvolvimento da Cinemática de Suspensão de um Veículo por Meio de um Modelo Semi-Empírico dos Pneus Universidade Federal de Santa Maria 2015
- Lafraniere , M. Design of a Formula SAE Racecar Chassis: Composite Analysis Utilizing Altair Engineering OptiStruct Software University of Toronto 2007
- Fialho , A. B. Instrumentação Industrial: Conceitos, Aplicações e Análises Editora Érica 2010
- Zipfel , M. S. , George , A. R. Compliance and Friction in Elastic and Mechanical Joints of Race Car Suspensions SAE Technical Paper 2006-01-3650 2006 10.4271/2006-01-3650