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Multiobjective Optimum Design of Automotive Parts by Non-Parametric Shape Optimization Method
Published October 22, 2006 by Society of Automotive Engineers of Japan in Japan
This paper aims to show the shape optimization method that satisfies both performances of the stiffness and the vibration in the shell structure to verify its effectiveness. The compliance that is an index for the stiffness and the eigenvalue that is an index for the vibration are scalared to be the objective functional by the weighing factor, subject to the volume of the structure as a constraint condition. The design variable with respect to the shell shape variation is a variation in the in-plane direction of the shell for maintaining the curvature of the initial shape. As the analysis method, we adopt the traction method which is a non-parametric shape optimization method. Using this method, we can obtain the optimum free boundary shape.
The results of a simplified shape and an automotive chassis part are shown to verify the effectiveness of this method. The Pareto optimum solution, the relationship with the trade-off is also shown for each problem.