Structural-Acoustic Analysis inside Rectangular CompositeCavity with one flexible panel
| Author(s) | : | Sreyashi Das, Arup GuhaNiyogi |
| Institution | : | Asst. Professor, Dept. of Civil Engineering, Jadavpur University, Kolkata-32, India |
| Published In | : | Vol. 5, Issue 3 — March 2018 |
| Page No. | : | 546-554 |
| Domain | : | Engineering |
| Type | : | Research Paper |
| ISSN (Online) | : | 2348-4470 |
| ISSN (Print) | : | 2348-6406 |
In this vibro-acoustic problem, an acoustic domain is confined within a laminated composite rectangularrigid enclosure with one flexible wall at the end, subjected to harmonic excitement. From the finite element free vibrationanalysis a mobility relation is derived to relate acoustic pressure and structural velocity normal to the containingstructure. Boundary element method is used with 8 noded quadratic isoparametric elements to analyze the acousticcavity from pressure-velocity formulation. Velocity is specified for the rigid part of the boundary. The pressure boundaryvalues are solved from the boundary element equations coupled with the mobility relations, while the velocity at flexibleboundary is computed from mobility relationship. Sound pressure levels at boundary as well as inside the domain atvarious interior points reveal the effects of the length of the laminated composite cavity with the variation in wallthickness, increase in damping and increase in number of layers
Sreyashi Das, Arup GuhaNiyogi, “Structural-Acoustic Analysis inside Rectangular CompositeCavity with one flexible panel”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 5, Issue 3, pp. 546-554, March 2018.
