An acceleration method in elasto-plastic finite element computation

C. N. Chen

研究成果: Article同行評審

12 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)125-132
頁數8
期刊Computers and Structures
44
發行號1-2
DOIs
出版狀態Published - 1992 七月 3

All Science Journal Classification (ASJC) codes

  • 土木與結構工程
  • 建模與模擬
  • 材料科學(全部)
  • 機械工業
  • 電腦科學應用

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