Akademik Veri Yönetim Sistemi
JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY, cilt.39, sa.1, ss.339-350, 2024 (SCI-Expanded)
Battery
is one of the largest contributors to the weight of electric vehicles, and its
location directly affects the performance of the suspension system. The aim of
this article is to determine the optimal battery locations for ride comfort of
in-wheel-motor electric automobiles using a nonlinear vehicle suspension model.
In the analyses, a seven-degree-of-freedom half-vehicle suspension model was
used, in which cubic nonlinearities of all springs and dampers are taken into
account in addition to their linear characteristics. In addition to spring and
damper nonlinearities, all trigonometric nonlinearities are also considered in
the model. Totally 144 different driving scenarios were generated with 48
different sinusoidal road profiles and 3 different travel speeds, and for each
scenario by testing 36 battery locations along the vehicle’s longitudinal axis,
the optimal one was found. The optimization criterion is the minimization of
the root-mean-square of the vertical acceleration of the driver and seat. As a
result of the 5184 analyses carried out, it has been seen that the optimal
battery location is the middle of the vehicle for road profiles with
wavelengths between 0.2 and 5 m, whereas the rear of the vehicle for road
profiles with wavelengths between 10 and 30 m.