RESEARCH PAPER
Dynamics of the vehicle rear suspension system with electric motors mounted in wheels
| 1 | Institute of Electrical Drives and Machines – Komel al. Roździeńskiego 188, 40-203 Katowice, Poland |
| 2 | Department of Combustion Engines and Vehicles University of Bielsko-Biala ul. Willowa 2, 43-309 Bielsko-Biala, Poland |
| 3 | Department of Mechanical Engineering Fundamentals University of Bielsko-Biala ul. Willowa 2, 43-309 Bielsko-Biala, Poland |
Publication date: 2019-03-31
Eksploatacja i Niezawodność – Maintenance and Reliability 2019;21(1):125–136
KEYWORDS
ABSTRACT
The dynamics analysis of the rear suspension system of the Fiat Panda III with electric motors mounted in wheels is presented in
the paper. The simplified model of this system modeled using the multibody system dynamics method and the MSC. Adams package
is proposed. In order to validate the proposed numerical model, the road tests were carried out consisting on passing the vehicle
without motors in wheels at constant speed through the obstacle. The vertical displacement of the center of the vehicle wheel
was measured during the tests. During the validation, parameters of the wheel-to-road contact, stiffness coefficients of springs
and shock absorber damping coefficients of the suspension of the simulation model were modified so that the numerical results
were consistent with the experiment. Further, such a tuned model was used to simulate the motion of suspension with the motors
mounted into the wheels. The obtained results were validated, obtaining the accepted compatibility. In the following, a series of
calculations was carried out in order to analyze the influence of stiffness coefficients of springs and shock absorber damping coefficients on the dynamic response of the suspension.
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