Derivation of a rectangular finite element for potential problems from consistency criteria

Peter Bettess, Omar Laghrouche

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    This short paper demonstrates how the matrix for a 4-node potential finite element can be derived from the conditions of 'rigid body movement',dagger symmetry and consistency, and the requirement that the element solve exactly the case of phi = xy. This derivation is intended to be a simple illustration of the ideas of Bergan and others. (C) 1998 John Wiley & Sons, Ltd.

    Original languageEnglish
    Pages (from-to)35-42
    Number of pages8
    JournalInternational Journal for Numerical Methods in Biomedical Engineering
    Issue number1
    Publication statusPublished - Jan 1998

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