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A finite element-analytical method for modeling a structure in an infinite fluid
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Zarda, P. R. |
| Copyright Year | 1976 |
| Description | A method is described from which the interaction of an elastic structure with an infinite acoustic fluid is determined. The displacements of the structure and the pressure field of the immediate surrounding fluid are modeled by finite elements, and the remaining pressure field of the infinite fluid region is given by an analytical expression. This method yields a frequency dependent boundary condition for the outer fluid boundary when applied to the frequency response of an elastic beam in contact with an acoustic fluid. The frequency response of the beam is determined using NASTRAN, and compares favorably to the exact solution which is also presented. The effect of the fluid on the response of the structure at low and high frequencies is due to added mass and damping characteristics, respectively. |
| File Size | 847230 |
| Page Count | 22 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770013555 |
| Archival Resource Key | ark:/13960/t4fn5zg1q |
| Language | English |
| Publisher Date | 1976-10-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Finite Element Method Fluid Boundaries Fluid Flow Acoustic Streaming Nastran User Manuals Computer Programs 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 |
