Reliable convergence for dynamic linearly-elastic/perfectly plastic systems analyzed with different integration methods

authored by: Aram Soroushian, Jamshid Farjoodi, Peter Wriggers
Abstract: Analyzing the semi-discretized equations of motion has a fundamental role in structural dynamic analysis. Though time integration is the widely accepted approach for these analyses, the stability and accuracy of the responses computed by time integration are yet unpredictable. Considering linearly-elastic/perfectly-plastic dynamic systems, recently two independent methods for preserving responses' convergence is presented. In this paper these two methods are first reviewed. Then implementing a recent round off reduction technique, a reliable method for preserving responses' convergence is attained. Implementing the new method for analyzing a simple linearly-elastic/perfectly- plastic dynamic system with several different integration methods reveals that for the systems under consideration, the proposed method preserves responses' convergence, regardless of the integration method.
Organisation(s): Institute of Mechanics and Computational Mechanics
External Organisation(s): University of Tehran
Type: Paper
Pages: 2009-2016
No. of pages: 8
Publication date: 2003
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Engineering
: Details in the research portal "Research@Leibniz University"