Abstract
The presence of a substructure in a cylindrical shell gives rise to dynamic interactions, including resonance effects, which have an influence on the radiated acoustic field. The lowest mode of the substructure may interact vigorously with a higher order mode of the shell. In this paper a Lagrangian formulation is used to analyze the forced motion of the immersed shell/substructure system. In addition, the frequency window method is used to reduce the complexity of the resulting expressions and to obtain approximate solutions in a frequency range of interest. The particular example is concerned with a spring-mass system, which is attached to the shell. Three cases of forced harmonic motion are considered. The radiated pressure is computed as a function of the frequency. The radiated pressure for the shell/substructure system is compared with that for a shell without an oscillator subjected to the same input force.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 312-318 |
| Number of pages | 7 |
| Journal | Journal of Vibration and Acoustics, Transactions of the ASME |
| Volume | 114 |
| Issue number | 3 |
| DOIs | |
| State | Published - Jul 1992 |
| Externally published | Yes |
ASJC Scopus subject areas
- Acoustics and Ultrasonics
- Mechanics of Materials
- Mechanical Engineering