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Coupled nastran/boundary element formulation for acoustic scattering
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Everstine, Gordon C. Schuetz, Luise S. Henderson, Francis M. |
| Copyright Year | 1987 |
| Description | A coupled finite element/boundary element capability is described for calculating the sound pressure field scattered by an arbitrary submerged 3-D elastic structure. Structural and fluid impedances are calculated with no approximation other than discretization. The surface fluid pressures and normal velocities are first calculated by coupling a NASTRAN finite element model of the structure with a discretized form of the Helmholtz surface integral equation for the exterior field. Far field pressures are then evaluated from the surface solution using the Helmholtz exterior integral equation. The overall approach is illustrated and validated using a known analytic solution for scattering from submerged spherical shells. |
| File Size | 619240 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870017814 |
| Archival Resource Key | ark:/13960/t26b21h8d |
| Language | English |
| Publisher Date | 1987-08-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Finite Element Method Submerged Bodies Integral Equations Acoustic Scattering Proving Spherical Shells Nastran Fluid Pressure Boundary Element Method Elastic Bodies Structural Analysis Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
