Simple and accurate four-node axisymmetric element

Research output: Contribution to journalArticle

Abstract

Based on the assumed strain method, a simple four-node axisymmetric solid element is introduced. The assumed strain field is carefully selected to preserve the correct rank of the element stiffness matrix and to achieve high accuracy. The strain field is developed in conjunction with orthogonal projections and no matrix inversions are needed. The coarse mesh accuracy in bending and in typical axisymmetric load cases is excellent even for nearly incompressible materials. The strain-driven format obtained is well suited for materials with non-linear stress-strain relations. Several numerical examples are presented where the excellent performance of the proposed simple element is verified. Copyright (C) 2006 John Wiley & Sons, Ltd.

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Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Mechanical Engineering

Keywords

  • stabilization, quadrilateral, Hu-Washizu, assumed strain, axisymmetry
Original languageEnglish
Pages (from-to)175-200
JournalInternational Journal for Numerical Methods in Engineering
Volume71
Issue number2
Publication statusPublished - 2007
Publication categoryResearch
Peer-reviewedYes