OPTIMIZATION METHODOLOGY OF OFF-ROAD VEHICLE'S LATERAL DYNAMICS DESIGN

• DOI: 10.22533/at.ed.317352310022

• Palavras-chave: Lateral Dynamics, Off-Road Vehicle, Optimization, Lateral Load Transfer, Roll Rate

• Keywords: Lateral Dynamics, Off-Road Vehicle, Optimization, Lateral Load Transfer, Roll Rate

• Abstract:

  The growth of the off – road vehicles market is a direct result of the Search for the practice of motorsports or, even, of the applicability in economic activities that need to be carried out in irregular terrains. This way, it is fundamental that the Lateral Dynamics Project provides the intended behavior, in addition to allowing adequate interaction between the vehicle and the external forces acting. The present work is based on the development of a sequential methodology of dynamic-lateral design. For this, an algorithm is developed in the MATLAB® software, being integrated to the modeFRONTIER® software, in order to vary geometric and elastic parameters, intrinsic to the vehicle, obtaining optimized setups. This impacts on the reduction of time and costs in the conception of a vehicle, making the project more accurate, since fewer prototypes will be developed and tested. Based on this, several setups can be obtained and, subsequently, the one that best suits the previously defined objectives is chosen. Finally, the present work obtained a model that guarantees that 65% of the lateral load transfer is on the rear axle, promoting an oversteer behavior. Furthermore, with a roll rate below 5 °/g, it is possible to obtain a vehicle with satisfactory stability