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Title	MODIFIED ITERATIVE GROUP-IMPLICIT ALGORITHM FOR THE DYNAMIC ANALYSIS OF STRUCTURES
Accession No	00981397
Authors	Dere, Y; Sotelino, E D
Journal Title	Journal of Structural Engineering Vol. 130 No. 10
Corp. Authors / Publisher	American Society of Civil Engineers
Publication Date	20041000
Description	p. 1436-1444; Figures(7); References(23)
Languages	English
Abstract	This article reports on a study of the convergence characteristics of the iterative group-implicit (IGI) algorithm, which is a parallel algorithm for the time integration of the equations of motion arising in structural dynamics problems. The authors found that the IGI algorithm does not always converge. For realistic structural applications, the time-step size must be limited to impractical values, which jeopardizes its efficiency, thus, defeating its purpose. The modified IGI (MIGI) algorithm is developed to address the convergence handicaps of the IGI algorithm. The new method incorporates new approaches in a number of areas, such as on the interface compatibility enforcement calculation, imbalance force distribution, and interface convergence checks. The convergence characteristics and limitations of the two algorithms are compared. The authors found that the performance of the MIGI algorithm is far superior to that of the IGI algorithm. Through the numerical simulation of a practical structural engineering application, it is found that the MIGI algorithm is very efficient and produces highly accurate solutions.
TRT Terms	Algorithms ; Distributed processing ; Dynamic structural analysis ; Finite element method ; Iterative methods ; Parallel processing ; Structural analysis ; Structural engineering
Subject Areas	H13 FORECASTING; H25 STRUCTURES DESIGN AND PERFORMANCE; I24 Design of Bridges and Retaining Walls; I25 Design of Tunnels
Availability	American Society of Civil Engineers Find a library where document is available Order Document: http://worldcat.org/issn/07339445
TRIS Files	HRIS
Database	TRIS Online

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