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| Titel: |
Development of an equivalent force method and an application in simulating the radiated noise from an operating diesel engine |
| Auteur: |
Nickolas Vlahopoulos Yury Kalish S.T. Raveendra |
| Verschenen in: |
Shock and vibration |
| Paginering: | Jaargang 6 (2001) nr. 3 pagina's 113-123 |
| Jaar: |
2001-04-01 |
| Inhoud: |
In this paper a new methodology is presented for applying measured accelerations and forces as excitation on a structural finite element model in order to perform a forced frequency response analysis. The computed vibration constitutes the excitation for an acoustic boundary element analysis. The new developments presented in this paper are associated with: the equivalent force method that can prescribe the acceleration at certain parts of the structure; the integration within a single process of test data that define the excitation, with the vibration analysis, and the acoustic prediction; the utilization of the new technology in simulating the noise radiated from a running engine and determining the effects of design changes. Numerical results for noise radiated from a running engine are compared to test data for a baseline design. The effect of two structural design modifications on the radiated noise is computed, and conclusions are deduced. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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