TY - GEN
T1 - Improvement of unstructured quadrilateral mesh quality for multigrid analysis
AU - Wada, Yoshitaka
AU - Hayashi, Takuji
AU - Kikuchi, Masanori
AU - Xu, Fei
PY - 2008
Y1 - 2008
N2 - Due to more complex and severe design restrictions, more effective and faster finite element analyses are demanded. There are several ways to compute FE analysis efficiently: parallel computing, fast iterative or direct solvers, adaptive analysis and so on. One of the most effective analysis ways is the combination of adaptive analysis and multigrid iterative solver, because an adaptive analysis requires several meshes with difference resolutions and multigrid solver utilizes such meshes to accelerate its computation. However, convergence of multigrid solver is largely affected by initial shape of each element. An effective mesh improvement method is proposed here. It is the combination of mesh coarsening and refinement. A good mesh can be obtained by the method to be applied to an initial mesh, and better convergence is achieved by the improved initial mesh.
AB - Due to more complex and severe design restrictions, more effective and faster finite element analyses are demanded. There are several ways to compute FE analysis efficiently: parallel computing, fast iterative or direct solvers, adaptive analysis and so on. One of the most effective analysis ways is the combination of adaptive analysis and multigrid iterative solver, because an adaptive analysis requires several meshes with difference resolutions and multigrid solver utilizes such meshes to accelerate its computation. However, convergence of multigrid solver is largely affected by initial shape of each element. An effective mesh improvement method is proposed here. It is the combination of mesh coarsening and refinement. A good mesh can be obtained by the method to be applied to an initial mesh, and better convergence is achieved by the improved initial mesh.
KW - FEM
KW - Mesh refinement and coarsening
KW - Multigrid solver
UR - http://www.scopus.com/inward/record.url?scp=45749123476&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/amr.33-37.833
DO - 10.4028/www.scientific.net/amr.33-37.833
M3 - 会议稿件
AN - SCOPUS:45749123476
SN - 0878493999
SN - 9780878493999
T3 - Advanced Materials Research
SP - 833
EP - 838
BT - Advances in Fracture and Materials Behavior - Selected, peer reviewed papers of the Seventh International Conference on Fracture and Strength of Solids (FEOFS2007)
PB - Trans Tech Publications
T2 - 7th International Conference on Fracture and Strength of Solids, FEOFS 2007
Y2 - 27 August 2007 through 29 August 2007
ER -