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The effect of acceleration versus displacement methods on steady-state boundary forces
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | McGhee, D. S. |
| Copyright Year | 1992 |
| Description | This study describes the acceleration and displacement methods for use in the recovery of coupled system boundary forces. A simple two degree of freedom system has been used for illustration. The effect of the choice of method for use with indeterminate or over-constrained boundaries has been investigated. It has specifically looked at results from a simple two dimensional beam problem using both methods. Much work has been done on the effect of Craig-Bampton modal truncation system displacements and forces, however, little work has been done on system level modal truncation. The findings of this study indicate that the effect of this system level truncation is significant. This may be particularly true for the 35 Hz system cutoff frequency that is required by the space shuttle. From this study's findings, recommendations for areas of study with space shuttle payload systems are made. |
| File Size | 1266128 |
| Page Count | 36 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920012214 |
| Archival Resource Key | ark:/13960/t91886w2g |
| Language | English |
| Publisher Date | 1992-04-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Dynamic Structural Analysis Degrees of Freedom Applications of Mathematics Modal Response Truncation Errors Space Shuttle Payloads Frequencies Steady State Constraints Beams Supports Coupled Modes Vibration Mode Mathematical Models Loads Forces Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
