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Paper VII.1

An Improved Dual Domain Decomposition Technique for Computational Structural Technology

M. Papadrakakis, S. Bitzarakis and A. Kotsopoulos

Institute of Structural Analysis & Seismic Research, National Technical University of Athens, Athens, Greece

doi:10.4203/ccp.38.7.1

M. Papadrakakis, S. Bitzarakis, A. Kotsopoulos, "An Improved Dual Domain Decomposition Technique for Computational Structural Technology", in B.H.V. Topping, (Editor), "Advances in Computational Structures Technology", Civil-Comp Press, Edinburgh, UK, pp 239-246, 1996. doi:10.4203/ccp.38.7.1

Abstract

The paper presents an improved domain decomposition technique for the solution of large-scale problems in structural mechanics. The method operates on overlapping subdomains on the global level after partitioning the domain into a set of totally disconnected subdomains using Lagrange multipliers. The internal problem at each subdomain is solved by the PCG method while the interface problem is handled by a Preconditioned conjugate projected gradient algorithm. This combination in conjunction with an analytic determination of the rigid body modes of each floating subdomain results in a cost-effective implementation with enhanced convergence properties and reduced storage requirements.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 38 ADVANCES IN COMPUTATIONAL STRUCTURES TECHNOLOGY Edited by: B.H.V. Topping Paper VII.1 An Improved Dual Domain Decomposition Technique for Computational Structural Technology M. Papadrakakis, S. Bitzarakis and A. Kotsopoulos Institute of Structural Analysis & Seismic Research, National Technical University of Athens, Athens, Greece doi:10.4203/ccp.38.7.1 purchase the full-text of this paper Full Bibliographic Reference for this paper M. Papadrakakis, S. Bitzarakis, A. Kotsopoulos, "An Improved Dual Domain Decomposition Technique for Computational Structural Technology", in B.H.V. Topping, (Editor), "Advances in Computational Structures Technology", Civil-Comp Press, Edinburgh, UK, pp 239-246, 1996. doi:10.4203/ccp.38.7.1 Abstract The paper presents an improved domain decomposition technique for the solution of large-scale problems in structural mechanics. The method operates on overlapping subdomains on the global level after partitioning the domain into a set of totally disconnected subdomains using Lagrange multipliers. The internal problem at each subdomain is solved by the PCG method while the interface problem is handled by a Preconditioned conjugate projected gradient algorithm. This combination in conjunction with an analytic determination of the rigid body modes of each floating subdomain results in a cost-effective implementation with enhanced convergence properties and reduced storage requirements. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £82 +P&P)
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