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Reduction of matrix wavefront for nastran
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Everstine, G. C. |
| Copyright Year | 1978 |
| Description | The three grid point resequencing algorithms most often run by NASTRAN users are compared for their ability to reduce matrix root-mean-square (rms) wavefront, which is the most critical parameter in determining matrix decomposition time in NASTRAN. The three algorithms are Cuthill-McKee (CM), Gibbs-Poole-Stockmeyer (GPS), and Levy. The first two (CM and GPS) are in the BANDIT program, and the Levy algorithm is in WAVEFRONT. Results are presented for a diversified collection of 30 test problems ranging in size from 59 to 2680 nodes. It is concluded that GPS is exceptionally fast and, for the conditions under which the test was made, the algorithm best able to reduce rms wavefront consistently well. |
| File Size | 448411 |
| Page Count | 11 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19780024531 |
| Archival Resource Key | ark:/13960/t0qr9mh5w |
| Language | English |
| Publisher Date | 1978-10-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Root-mean-square Errors Decomposition Algorithms Nastran Wave Fronts Structural Analysis Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
