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Partitioning strategy for efficient nonlinear finite element dynamic analysis on multiprocessor computers
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Noor, Ahmed K. Peters, Jeanne M. |
| Copyright Year | 1989 |
| Description | A computational procedure is presented for the nonlinear dynamic analysis of unsymmetric structures on vector multiprocessor systems. The procedure is based on a novel hierarchical partitioning strategy in which the response of the unsymmetric and antisymmetric response vectors (modes), each obtained by using only a fraction of the degrees of freedom of the original finite element model. The three key elements of the procedure which result in high degree of concurrency throughout the solution process are: (1) mixed (or primitive variable) formulation with independent shape functions for the different fields; (2) operator splitting or restructuring of the discrete equations at each time step to delineate the symmetric and antisymmetric vectors constituting the response; and (3) two level iterative process for generating the response of the structure. An assessment is made of the effectiveness of the procedure on the CRAY X-MP/4 computers. |
| File Size | 10935077 |
| Page Count | 38 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19890006799 |
| Archival Resource Key | ark:/13960/t2j72bt2b |
| Language | English |
| Publisher Date | 1989-01-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Dynamic Structural Analysis Finite Element Method Partitions Mathematics Iterative Solution Nonlinearity Multiprocessing Computers Parallel Processing Computers Transformations Mathematics Antisymmetry 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 |
