A New Parallel Overlapped Domain Decomposition Method for Nonlinear Dynamic Finite Element Analysis
IR@SERC: CSIR-Structural Engineering Research Centre, Chennai
View Archive Info| Field | Value | |
| Title |
A New Parallel Overlapped Domain Decomposition Method for Nonlinear Dynamic Finite Element Analysis
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| Creator |
Rama Mohan Rao, A.
Appa Rao, T.V.S.R. Dattaguru, B. |
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| Subject |
Parallel processing
Nonlinear dynamics Finite element method Newmark algorithm Nonoverlapped domain decomposition |
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| Description |
In this paper a new parallel algorithm for nonlinear transient dynamic analysis of large structures has been presented. An unconditionally stable Newmark-b method (constant average acceleration technique) has been employed for time integration. The proposed parallel algorithm has been devised within the broad framework of domain decomposition techniques. However, unlike most of the existing parallel algorithms (devised for structural dynamic applications) which are basically derived using nonoverlapped domains, the proposed algorithm uses overlapped domains. The parallel overlapped domain decomposition algorithm proposed in this paper has been formulated by splitting the mass, damping and stiffness matrices arises out of finite element discretisation of a given structure. A predictor–corrector scheme has been formulated for iteratively improving the solution in each step. A computer program based on the proposed algorithm has been developed and implemented with message passing interface as software development environment. PARAM-10000 MIMD parallel computer has been used to evaluate the performances. Numerical experiments have been conducted to validate as well as to evaluate the performance of the proposed parallel algorithm. Comparisons have been made with the conventional nonoverlapped domain decomposition algorithms. Numerical studies indicate that the proposed algorithm is superior in performance to the conventional domain decomposition algorithms.
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| Date |
2009
2009 2003 |
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| Type |
Journal article
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| Identifier |
Computers and Structures, Vol.81, 2003, p.2441–2454
http://hdl.handle.net/123456789/64 |
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| Language |
en
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| Rights |
It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice that the rights are violated then the item would be withdrawn.
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| Publisher |
Elsevier
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