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Combining acceleration and displacement dependent modal frequency responses using an msc/nastran dmap alter
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Barnett, Alan R. Ludwiczak, Damian R. Widrick, Timothy W. |
| Copyright Year | 1996 |
| Description | Solving for dynamic responses of free-free launch vehicle/spacecraft systems acted upon by buffeting winds is commonly performed throughout the aerospace industry. Due to the unpredictable nature of this wind loading event, these problems are typically solved using frequency response random analysis techniques. To generate dynamic responses for spacecraft with statically-indeterminate interfaces, spacecraft contractors prefer to develop models which have response transformation matrices developed for mode acceleration data recovery. This method transforms spacecraft boundary accelerations and displacements into internal responses. Unfortunately, standard MSC/NASTRAN modal frequency response solution sequences cannot be used to combine acceleration- and displacement-dependent responses required for spacecraft mode acceleration data recovery. External user-written computer codes can be used with MSC/NASTRAN output to perform such combinations, but these methods can be labor and computer resource intensive. Taking advantage of the analytical and computer resource efficiencies inherent within MS C/NASTRAN, a DMAP Alter has been developed to combine acceleration- and displacement-dependent modal frequency responses for performing spacecraft mode acceleration data recovery. The Alter has been used successfully to efficiently solve a common aerospace buffeting wind analysis. |
| File Size | 617560 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19960017265 |
| Archival Resource Key | ark:/13960/t4pk59z04 |
| Language | English |
| Publisher Date | 1996-03-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Dynamic Response Dynamic Structural Analysis Modal Response Wind Effects Dynamic Loads Spacecraft Launching Displacement Random Loads Launch Vehicles Acceleration Physics Structural Design Criteria Frequency Response Spacecraft Stability Nastran Buffeting Matrices Mathematics Transformations Mathematics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
