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Multiobjective Optimum Design of Automotive Parts by Non-Parametric Shape Optimization Method
Technical Paper
2006-05-0116
Sector:
Language:
English
Abstract
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.