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Measurement of the Forces from the Ground on the Tires for a Baja SAE Vehicle
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 30, 2020 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Knowledge of the forces on the vehicle is necessary for designing most of the Baja vehicle subsystems, however little knowledge of the dynamic forces on small off-road vehicles is available. To measure the vertical and longitudinal forces on the tires of a Baja vehicle, a custom strain gauge system was designed and combined with Quarq tire pressure sensors while running in off-road conditions. The strain gauge system consisted of a half-bridge Wheatstone bridge of 350 Ohm resistors in bending, feeding the change in voltages into the 20-bit ADC of a Cypress Semiconductor PSoC 5LP microcontroller for data interpretation and then recorded onto an SD card for later analysis. Quarq Tyrewiz tire pressure sensors were placed on both the front and rear tires and the recorded pressures were converted to forces on the tire through calibration. Experimental data was found to agree with suspension models. Data from the strain gauges and tire pressure sensors are in agreement and when used to measure the forces on a 470 lbf Baja SAE vehicle with a driver inside, the dynamic bump forces were found to be as high as four to five times the static corner weight of the vehicle.
CitationCarranza, R., Rico, A., Leguizamon, J., and Bachman, J., "Measurement of the Forces from the Ground on the Tires for a Baja SAE Vehicle," SAE Technical Paper 2020-32-2309, 2020, https://doi.org/10.4271/2020-32-2309.
Data Sets - Support Documents
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- Silva Diniz , D.D. , De Carvalho , C.C. , and da Silva , A.A. Computational Simulation of Vertical Dynamics for an Off-Road Vehicle by Using Multibody Models SAE Technical Paper 2017-36-0441 2017 https://doi.org/10.4271/2017-36-0441
- Shukla , P. , Joshi , K. , Rastogi , U. , and Moola , A.R. Design Analysis and Simulations of Components of an All-Terrain Vehicle SAE Technical Paper 2019-28-0049 2019 https://doi.org/10.4271/2019-28-0049
- Puhn , F. How to Make Your Car Handle Penguin 1976
- Kenedi , P.P. , de Souza Xavier , L. , Amar de Aguiar , R.A. , de Oliveira Sampaio , R. et al. Modeling Different Configurations for a Front Suspension of an Off-Road Vehicle Mini-Baja SAE Technical Paper 2004-01-3437 2004 https://doi.org/10.4271/2004-01-3437
- Sharma , Y. , Garg , R. , Bhargava , R. , Singh Deo , A. et al. Design and Development of Single Seat, Four Wheeled All-Terrain Vehicle for Baja Collegiate Design Series SAE Technical Paper 2015-01-2863 2015 https://doi.org/10.4271/2015-01-2863
- Owens , A.T. , Jarmulowicz , M.D. , and Jones , P. Structural Considerations of a Baja SAE Frame SAE Technical Paper 2006-01-3626 2006 https://doi.org/10.4271/2006-01-3626
- Augustine , P. , Hunter , T. , Sievers , N. , and Guo , X. Load Identification of a Suspension Assembly Using True-Load Self Transducer Generation SAE Technical Paper 2016-01-0429 2016 https://doi.org/10.4271/2016-01-0429
- Gertz , L.C. , Martelo , L. , Laranja , R.A.C. , Rech , C. et al. An Off-Road Suspension Design SAE Technical Paper 2005-01-4024 2005 https://doi.org/10.4271/2005-01-4024
- Kenedi , P.P. , and De Souza Royse , F. Modeling the Influence of a Road Obstacle on the Dynamic Behavior of an Off-Road Vehicle SAE Technical Paper 2005-01-3986 2005 https://doi.org/10.4271/2005-01-3986
- Afonso , B. , Chicuta , W. , and Bortolussi , R. Test and Validation of Vehicle Vertical Dynamics in a Multibody Doftware SAE Technical Paper 2015-36-0211 2015 https://doi.org/10.4271/2015-36-0211