| タイトル | Solving Modal Equations of Motion with Initial Conditions Using MSC/NASTRAN DMAP |
| 本文（外部サイト） | http://hdl.handle.net/2060/19930014551 |
| 著者（英） | Ibrahim, Omar M.; Barnett, Alan R.; Sullivan, Timothy L.; Abdallah, Ayman A. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1993-05-01 |
| 言語 | eng |
| 内容記述 | By utilizing MSC/NASTRAN DMAP (Direct Matrix Abstraction Program) in an existing NASA Lewis Research Center coupled loads methodology, solving modal equations of motion with initial conditions is possible using either coupled (Newmark-Beta) or uncoupled (exact mode superposition) integration available within module TRD1. Both the coupled and newly developed exact mode superposition methods have been used to perform transient analyses of various space systems. However, experience has shown that in most cases, significant time savings are realized when the equations of motion are integrated using the uncoupled solver instead of the coupled solver. Through the results of a real-world engineering analysis, advantages of using the exact mode superposition methodology are illustrated. |
| NASA分類 | STRUCTURAL MECHANICS |
| レポートNO | 93N23740
NASA-TM-106064
E-7670
NAS 1.15:106064 |
| 権利 | No Copyright |
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