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MULTI-OBJECTIVE OPTIMIZATION OF THE INNER REINFORCEMENT FOR A VEHICLE'S HOOD CONSIDERING STATIC STIFFNESS AND NATURAL FREQUENCY  

Choi, S.H. (Department of Mechanical Engineering, Graduate School, Hanyang University)
Kim, S.R. (Department of Mechanical Engineering, Graduate School, Hanyang University)
Park, J.Y. (Department of Mechanical Engineering, Graduate School, Hanyang University)
Han, S.Y. (School of Mechanical Engineering, Hanyang University)
Publication Information
International Journal of Automotive Technology / v.8, no.3, 2007 , pp. 337-342 More about this Journal
Abstract
A multi-objective optimization technique was implemented to obtain optimal topologies of the inner reinforcement for a vehicle's hood simultaneously considering the static stiffness of bending and torsion and natural frequency. In addition, a smoothing scheme was used to suppress the checkerboard patterns in the ESO method. Two models with different curvature were chosen in order to investigate the effect of curvature on the static stiffness and natural frequency of the inner reinforcement. A scale factor was employed to properly reflect the effect of each objective function. From several combinations of weighting factors, a Pareto-optimal topology solution was obtained. As the weighting factor for the elastic strain efficiency went from 1 to 0, the optimal topologies transmitted from the optimal topology of a static stiffness problem to that of a natural frequency problem. It was also found that the higher curvature model had a larger static stiffness and natural frequency than the lower curvature model. From the results, it is concluded that the ESO method with a smoothing scheme was effectively applied to topology optimization of the inner reinforcement of a vehicle's hood.
Keywords
Multi-objective optimization; Static stiffness; Natural frequency; Smoothing scheme; Inner reinforcement of a vehicle's hood; Topology optimization;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 2  (Related Records In Web of Science)
Times Cited By SCOPUS : 2
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