| Autor: |
Miller, Russel D., Huang, Hansen, Moyer, E. Thomas, Überall, Herbert |
| Zdroj: |
Journal of the Acoustical Society of America; 1989, Vol. 85 Issue S1, pS42-S42, 1p |
| Abstrakt: |
The steady-state analysis of submerged rigid and elastic bodies using two approaches is presented. In the first approach, a combined finite element/boundary element approach is used. The finite element program NASTRAN (NASA structural analysis) is used to formulate the structural matrices. The SIERRAS (surface integral equation radiated noise and analysis) program is then used to solve the coupled fluid-structure interaction problem. A superparametric boundary element with nine nodes is used. In the second approach, the superposition method is employed for modeling the fluid. The superposition method employs a number of point sources moved inside the body to represent the fluid response at the surface. This allows the fluid matrices to be formed without surface integration. Formulations for the superposition method are given for both the radiation and scattering problems. The methodologies are demonstrated for the scattering of an infinite set of plane waves from a submerged rigid sphere, prolate spheroid, and elastic spherical shell. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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