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학술저널
저자정보
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한국자동차공학회 International journal of automotive technology International journal of automotive technology Vol.8 No.3
발행연도
2007.6
수록면
337 - 342 (6page)

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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.

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ABSTRACT
1. INTRODUCTION
2. MULTI-OBJECTIVE DESIGN OPTIMIZATION
3. SUPPRESSION OF CHECKERBOARD PATTERNS
4. APPLICATION EXAMPLES
5. CONCLUSIONS
ACKNOWLEDGEMENT
REFERENCES

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