An acceleration method in elasto-plastic finite element computation

C. N. Chen

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In this work, an incremental iterative procedure will be adopted for the analysis of structural problems with elasto-plastic material behavior. The algorithm will concern a relaxation of the response increments obtained by the modified Newton-Raphson scheme. The relaxation parameters are defined by using the secant relation. This accelerating procedure can improve the convergence rate of the modified Newton-Raphson iteration significantly. This algorithm is very stable, even if large load sizes are adopted for the analysis. It is especially effective for consistently capturing the collapse load of a structure model without losing the control of computational efforts. The resulting algorithm is implemented into a finite element analysis computer code, and its performance is approved by numerical convergence tests. The application of this computational procedure is also extended to an analysis of crack propagation problems considering elasto-plastic material behavior.

Original languageEnglish
Pages (from-to)125-132
Number of pages8
JournalComputers and Structures
Volume44
Issue number1-2
DOIs
Publication statusPublished - 1992 Jul 3

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Modelling and Simulation
  • Materials Science(all)
  • Mechanical Engineering
  • Computer Science Applications

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