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Correlation of finite-element structural dynamic analysis with measured free vibration characteristics for a full-scale helicopter fuselage
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Malatino, R. Kenigsberg, I. J. Dean, M. W. |
| Copyright Year | 1974 |
| Description | The correlation achieved with each program provides the material for a discussion of modeling techniques developed for general application to finite-element dynamic analyses of helicopter airframes. Included are the selection of static and dynamic degrees of freedom, cockpit structural modeling, and the extent of flexible-frame modeling in the transmission support region and in the vicinity of large cut-outs. The sensitivity of predicted results to these modeling assumptions are discussed. Both the Sikorsky Finite-Element Airframe Vibration analysis Program (FRAN/Vibration Analysis) and the NASA Structural Analysis Program (NASTRAN) have been correlated with data taken in full-scale vibration tests of a modified CH-53A helicopter. |
| File Size | 2112641 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740026383 |
| Archival Resource Key | ark:/13960/t25b4w70r |
| Language | English |
| Publisher Date | 1974-01-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Nasa Programs Dynamic Structural Analysis Degrees of Freedom Airframes Helicopters Modal Response Aircraft Production Fuselages Vibration Tests Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
