Abstract
In this paper, a single-objective firefly algorithm is used for the optimization of two- and five-degree-of-freedom vehicle vibration models, considering the two and five conflicting objective functions, simultaneously. The conflicting objective functions for the two-degree-of-freedom model that have been considered for minimization involve the sprung mass acceleration and the relative displacement between the sprung mass and the tire. Further, the conflicting objective functions for the five-degree-of-freedom model are the seat acceleration, forward and rear tire velocity, the relative displacement between the sprung mass and forward tire, and the relative displacement between the sprung mass and rear tire. In this research study, multiple objective functions have been inserted into an aggregated objective function by using the weighted sum method. The results and comparison demonstrate the superiority and capability of the presented method compared with other research studies in literature.
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