Dqfem analyses of static and dynamic nonlinear elastic-plastic problems using a gsr-based accelerated constant stiffness equilibrium iteration technique

Chang New Chen

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

An integrated numerical technique for static and dynamic nonlinear structural problems adopting the equilibrium iteration is proposed. The differential quadrature finite element method (DQFEM), which uses the differential quadrature (DQ) techniques to the finite element discretization, is used to analyze the static and dynamic nonlinear structural mechanics problems. Numerical time integration in conjunction with the use of equilibrium iteration is used to update the response history. The equilibrium iteration can be carried out by the accelerated iteration schemes. The global secant relaxation-based accelerated constant stiffness and diagonal stiffness-based predictor-corrector equilibrium iterations which are efficient and reliable are used for the numerical computations. Sample problems are analyzed. Numerical results demonstrate the algorithm.

Original languageEnglish
Pages (from-to)310-317
Number of pages8
JournalJournal of Pressure Vessel Technology, Transactions of the ASME
Volume123
Issue number3
DOIs
Publication statusPublished - 2001 Aug

All Science Journal Classification (ASJC) codes

  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials
  • Mechanical Engineering

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