Linear static analysis of large structural models on pc clusters

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Date

2009

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Özmen, Semih

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This research focuses on implementing and improving a parallel solution framework for the linear static analysis of large structural models on PC clusters. The framework consists of two separate programs where the first one is responsible from preparing data for the parallel solution that involves partitioning, workload balancing, and equation numbering. The second program is a fully parallel nite element program that utilizes substructure based solution approach with direct solvers. The first step of data preparation is partitioning the structure into substructures. After creating the initial substructures, the estimated imbalance of the substructures is adjusted by iteratively transferring nodes from the slower substructures to the faster ones. Once the final substructures are created, the solution phase is initiated. Each processor assembles its substructure's stiffness matrix and condenses it to the interfaces. The interface equations are then solved in parallel with a block-cyclic dense matrix solver. After computing the interface unknowns, each processor calculates the internal displacements and element stresses or forces. Comparative tests were done to demonstrate the performance of the solution framework.

Subject Keywords

Civil engineering.

URI

http://etd.lib.metu.edu.tr/upload/2/12610763/index.pdf
https://hdl.handle.net/11511/18612

Collections

Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

S. Özmen, “Linear static analysis of large structural models on pc clusters,” M.S. - Master of Science, Middle East Technical University, 2009.