论文信息 - Porting an industrial sheet metal forming code to a distributed memory parallel computer

Porting an industrial sheet metal forming code to a distributed memory parallel computer

Abstract The parallel version of the sheet metal forming semi-implicit finite element code ITAS3D has been developed using the domain decomposition method and direct solution methods at both subdomain and interface levels. IBM Message Passing Library is used for data communication between tasks of the parallel code. Solutions of some sheet metal forming problems on IBM SP2 computer show that the adopted DDM algorithm with the direct solver provides acceptable parallel efficiency using a moderate number of processors. The speedup 6.7 is achieved for the problem with 20000 degrees-of-freedom on the 8-processor configuration.

Genki Yagawa | Shinobu Yoshimura | G. P. Nikishkov | A. Makinouchi | M. Kawka

[1] Denis Vanderstraeten,et al. Optimized partitioning of unstructured finite element meshes , 1995 .

[2] Charbel Farhat,et al. A parallel active column equation solver , 1988 .

[3] Y. Yamada,et al. Plastic stress-strain matrix and its application for the solution of elastic-plastic problems by the finite element method , 1968 .

[4] Genki Yagawa,et al. Parallel finite elements on a massively parallel computer with domain decomposition , 1993 .

[5] Gregory W. Brown,et al. Mesh partitioning for implicit computations via iterative domain decomposition: Impact and optimization of the subdomain aspect ratio , 1995 .

[6] Ivo Babuška,et al. Some aspects of parallel implementation of the finite-element method on message passing architectures , 1989 .

[7] A. Makinouchi,et al. Process simulation in sheet metal forming , 1994 .

[8] Genki Yagawa,et al. Performance study of the domain decomposition method with direct equation solver for parallel finite element analysis , 1996 .

[9] Charbel Farhat,et al. Implicit parallel processing in structural mechanics , 1994 .