Development of an Equivalent Force Method and an Application in Simulating the Radiated Noise from an Operating Diesel Engine
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 ne...
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| Format: | Article |
| Language: | English |
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Wiley
1999-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/1999/323427 |
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| _version_ | 1832549268459618304 |
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| author | Nickolas Vlahopoulos Yury Kalish S.T. Raveendra |
| author_facet | Nickolas Vlahopoulos Yury Kalish S.T. Raveendra |
| author_sort | Nickolas Vlahopoulos |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-dbec7d031c724941bced76fd94741002 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 1999-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-dbec7d031c724941bced76fd947410022025-02-03T06:11:49ZengWileyShock and Vibration1070-96221875-92031999-01-016311312310.1155/1999/323427Development of an Equivalent Force Method and an Application in Simulating the Radiated Noise from an Operating Diesel EngineNickolas Vlahopoulos0Yury Kalish1S.T. Raveendra2Department of Naval Architecture and Marine Engineering, University of Michigan, 2600 Draper Road, 214 NA&ME Bldg., Ann Arbor, MI 48109–2145, USADetroit Diesel Corporation, 13400 Outer Drive, West, Detroit, MI 48239–4001, USAAutomated Analysis Corporation, 2805 S. Industrial, Suite 100, Ann Arbor, MI 48104–6767, USAIn 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.http://dx.doi.org/10.1155/1999/323427 |
| spellingShingle | Nickolas Vlahopoulos Yury Kalish S.T. Raveendra Development of an Equivalent Force Method and an Application in Simulating the Radiated Noise from an Operating Diesel Engine Shock and Vibration |
| title | Development of an Equivalent Force Method and an Application in Simulating the Radiated Noise from an Operating Diesel Engine |
| title_full | Development of an Equivalent Force Method and an Application in Simulating the Radiated Noise from an Operating Diesel Engine |
| title_fullStr | Development of an Equivalent Force Method and an Application in Simulating the Radiated Noise from an Operating Diesel Engine |
| title_full_unstemmed | Development of an Equivalent Force Method and an Application in Simulating the Radiated Noise from an Operating Diesel Engine |
| title_short | Development of an Equivalent Force Method and an Application in Simulating the Radiated Noise from an Operating Diesel Engine |
| title_sort | development of an equivalent force method and an application in simulating the radiated noise from an operating diesel engine |
| url | http://dx.doi.org/10.1155/1999/323427 |
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