JSME international journal. Ser. C, Dynamics, control, robotics, design and manufacturing
Print ISSN : 1340-8062
Optimization of Noise Level Reduction by Truncated Modal Coupled Structural-Acoustic Sensitivity Analysis
Chinmoy PalIchiro Hagiwara
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1994 Volume 37 Issue 2 Pages 246-251

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Abstract
In the present study, a higher- and lower-order truncated modal and coupled structure-acoustic finite-element sensitivity analysis is performed to determine the rate of change of vibration responses of the body panels and sound pressure level at the position of the ear of a passenger/driver, and an inverse multi-objective optimization problem based on the structural synthesis method and pseudo-inverse method is solved to determine the required minimum changes of the design variables from the baseline design parameters to attain the selected design response in a shortest path. It is found that the structural synthesis method and the pseudo-inverse method converge to the solution when the step size at each iteration level of the optimization process is kept small.
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© The Japan Society of Mechanical Engineers
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