Computer Methods in Applied Mechanics and Engineering
Computer Methods in Applied Mechanics and Engineering
A global preconditioner for the element-by-element solution methods
Computer Methods in Applied Mechanics and Engineering
Using MPI: portable parallel programming with the message-passing interface
Using MPI: portable parallel programming with the message-passing interface
Multilevel k-way partitioning scheme for irregular graphs
Journal of Parallel and Distributed Computing
Developments and trends in the parallel solution of linear systems
Parallel Computing - Special Anniversary issue
LAPACK Working Note 94: A User''s Guide to the BLACS v1.0
LAPACK Working Note 94: A User''s Guide to the BLACS v1.0
Implicit domain decomposition scheme for parallel dynamic finite element geotechnical analysis
SEPADS'10 Proceedings of the 9th WSEAS international conference on Software engineering, parallel and distributed systems
Simulation of multistage excavation based on a 3D spectral-element method
Computers and Structures
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For FEM solution of complex hydraulic structures, a parallel method is usually needed to deal with a large amount of numerical computation. The article introduces an algorithm based on the element-by-element (EBE) scheme of the FEM and Jacobi pre-conditioning conjugate gradient method, including the EBE computation algorithm for boundary conditions and all kinds of loads. Furthermore, based on the concepts of ''boundary node'' and ''local internal node'', a new data exchange technology is developed that realizes the collection and transmission of data and makes it suitable for EBE method to be implemented on distributed memory parallel computers. This algorithm does not generate global stiffness matrix and only stores element stiffness matrices. With this algorithm, a 3D finite element parallel computation program, PFEM, is developed and implemented on a network cluster system to perform 3D finite element computations of an arch dam-foundation system and a large-scale underground tunnel. The results showed that the memory demand of this algorithm is less than that of conventional FEM and the calculation time could be decreased. It works very well for large-scale numerical computation of 3D complex structures like arch dam and underground tunnel.