Article ID: | iaor20123802 |
Volume: | 45 |
Issue: | 5 |
Start Page Number: | 717 |
End Page Number: | 728 |
Publication Date: | May 2012 |
Journal: | Structural and Multidisciplinary Optimization |
Authors: | Nandy Arup, Jog C |
Keywords: | engineering, design, programming: dynamic |
In this work, we propose an approach for reducing radiated noise from ‘light’ fluid‐loaded structures, such as, for example, vibrating structures in air. In this approach, we optimize the structure so as to minimize the dynamic compliance (defined as the input power) of the structure. We show that minimizing the dynamic compliance results in substantial reductions in the radiated sound power from the structure. The main advantage of this approach is that the redesign to minimize the dynamic compliance moves the natural frequencies of the structure away from the driving frequency thereby reducing the vibration levels of the structure, which in turn results in a reduction in the radiated sound power as an