C. Pal et I. Hagiwara, OPTIMIZATION OF NOISE-LEVEL REDUCTION BY TRUNCATED MODAL COUPLED STRUCTURAL - ACOUSTIC SENSITIVITY ANALYSIS, JSME international journal. Series C, dynamics, control, robotics, design and manufacturing, 37(2), 1994, pp. 246-251
In the present study, a higher- and lower-order truncated modal and co
upled structure-acoustic finite-element sensitivity analysis is perfor
med 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 passe
nger/driver, and in inverse multi-objective optimization problem based
on the structural synthesis method and pseudo-inverse method is solve
d to determine the required minimum changes of the design variables fr
om the baseline design parameters to attain the selected design respon
se in a shortest path. It is found that the structural synthesis metho
d and the pseudo-inverse method converge to the solution when the step
size at each iteration level of the optimization process is kept smal
l.