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A new fictitious time for the dynamic relaxation (DXDR) method

Research output: Contribution to journalJournal article

Published

Journal publication date7/05/2008
JournalInternational journal for numerical methods in engineering
Journal number6
Volume74
Number of pages23
Pages996-1018
Original languageEnglish

Abstract

This paper addresses the development of the DXDR method by introducing a modified fictitious time (MFT) increment. The MFT is determined by minimizing the residual force after each iteration. The rank of the convergence rate shows the advantage of the new method. The results obtained from plate and truss analyses demonstrate the potential of the new method. It is shown that, compared with a unit fictitious time, the MFT is more efficient, especially during the initial iterations. Moreover, MFT does not impose any additional constraints on the DXDR method.