Topology Optimization of the Inner Reinforcement for a Vehicle’s Hood Using Smoothing Scheme

S.H. Choi; M.S. Kim; J.S. Hwang; J.Y. Park; Seok Young Han

doi:10.4028/www.scientific.net/KEM.353-358.2847

Paper Titles

Development of a Material Mixing Method for Topology Optimization of a Structure with Multiple Thermal Criteria
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Optimum Design of a Dynamic Micro-Mixer for Multiphase Flow
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Optimum Design of a Planar Micromanipulator Using Displacement Amplifier
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Axiomatic Design of a Spatial Micromanipulator and Experimental Verification
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Topology Optimization of the Inner Reinforcement for a Vehicle’s Hood Using Smoothing Scheme
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Optimization of Materials and Modal Analysis for Motorcycle Frame
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Structural Stability Evaluation for Lifting Lug Design of Large Marine Engine by Finite Element Analysis
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Static and Fatigue Analysis of a Hybrid Joint Part for the Tilting Car Body
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Degradation and Failure Mechanisms of EPDM Rubbers for Automotive Radiator Hoses
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Topology Optimization of the Inner Reinforcement for a Vehicle’s Hood Using Smoothing Scheme

Abstract:

Topology optimization of the inner reinforcement for a vehicle’s hood has been performed by evolutionary structural optimization (ESO) using a smoothing scheme. The purpose of this study is to obtain optimal topology of the inner reinforcement for a vehicle’s hood considering the static stiffness of bending and torsion, and natural frequency simultaneously. To do this, the multiobjective optimization technique was implemented. Optimal topologies were obtained by the ESO method. From several combinations of weighting factors, a Pareto-optimal solution was obtained. Also, a smoothing scheme was implemented to suppress the checkerboard pattern in the procedure of topology optimization. As the weighting factor of the elastic strain efficiency goes from 1 to zero, it is found that the optimal topologies transmits from the optimal topology of static stiffness problem to that of natural frequency problem. Therefore, it is concluded that ESO method with a smoothing scheme is effectively applied to topology optimization of the inner reinforcement of a vehicle’s hood considering the static stiffness and natural frequency.