International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 04 | Apr 2024
p-ISSN: 2395-0072
www.irjet.net
Effective Prediction of Suspension Geometry Parameters for Optimized Ride and Handling Abhijit Chaudhari1, Darshan Wale2, Sulochana Dorve3, Pankaj Khachane4 1Technical Lead, TATA Motors
-------------------------------------------------------------------------***----------------------------------------------------------------------
Abstract Ride and handling are the crucial factors of the suspension system. The behavior of the system is a subjective approach determined by the engineers, professionals, and driving experts. These behavioral parameters need to meet the design considerations to attain the desired ride and handling. On the other hand, the experimental approach requires development in the suspension system, leading to cost-effectiveness, and time consumption, and might not provide an optimum solution for the optimized ride and handling behavior. This paper represents the optimization of the suspension geometry parameters using ADAMS/Car to obtain the desired ride and handling. A front vehicle model based on a B-segment concept vehicle is modeled by using ADAMS/Car. The vehicle front suspension model is simulated using a vertical-parallel movement test on ADAMS/Car. Samesegment vehicles with good rides and handling subjective reviews are considered for benchmarking. The resulting graphs of the benchmark vehicle suspension geometry are obtained by SPMM. Further, these results are correlated with the subjective reviews. The kinematics and compliances (K&C) of simulation are compared with the SPMM data of benchmarked vehicles. The best-fit suspension geometry curve trend for camber, caster, and toe is predicted in line with the benchmarked vehicles by changing hard points, to provide a best-fit correlation with a subjective approach. Comparing both the results, the best-fit ride and handling are generated. Keywords: Suspension system, camber, caster, toe, ride and handling
1. INTRODUCTION The suspension system along with the tire is the interface between the vehicle body and the road surface. The suspension system should isolate the passenger from vibration and shock, provide clearance between the road and bottom portion of the vehicle, and also react to tire forces including acceleration, braking, and steering so that all four tires are in contact with the road while maneuvering. Ride and handling depend on the nature,
© 2024, IRJET
|
Impact Factor value: 8.226
mechanism, and forces associated with suspension, steering, and tire. All these systems' design parameters are correlated to each other, impacting the improvement of ride and handling.
1.2. Ride and Handling: Ride study involves three main topics:
Ride excitation sources Basic mechanics of vehicle vibration response Human perception and tolerance of vibrations
Vehicle dynamics model Handling: Handling is the study concerned with the motion of vehicles on road surfaces. The dynamic behavior of a vehicle is determined by various kinds of forces such as gravitational force, aerodynamic force, and forces coming from the tires, acting on the vehicle. Handling constitutes the detailed study of all these forces imposed and their effect on the stability and cornering of the vehicle. To know how to handle the approach is to understand the turning behavior of vehicles at low speeds and high speeds. The importance of tire properties will arise in high-speed cornering.
2. Subjective vehicles:
assessments
for
benchmarked
2.1.Subjective assessment of ride and handling : The subjective approach of the vehicle ride and handling is estimated by the behavior of the vehicle conducted by the professionals. Opinions provided by the experts help customers to buy vehicles. Their feedback is much more valued in evaluating purchasing vehicles. Subjective feedback is in terms of phrases and deals with emotions based on the driving experiences of skilled drivers.
|
ISO 9001:2008 Certified Journal
|
Page 474