On the numerical integration of interface elements

J.C.J. Schellekens, R. Borst, de

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Eigenmode analyses of the element stiffness matrices have been used to assess the impact of the applied integration scheme on the stress predictions of two- and three-dimensional plane interface elements. It is demonstrated that large stress gradients over the element and coupling of the individual node-sets of the interface element may result in an oscillatory type of response. For line elements and linear plane interface elements the performance can be improved by using either a nodal lumping scheme or Newton-Cotes or Lobatto integration schemes instead of the more traditional Gauss scheme. For quadratic interface elements the same holds true except for a nodal lumping scheme.
Original languageEnglish
Pages (from-to)43-66
JournalInternational Journal for Numerical Methods in Engineering
Issue number1
Publication statusPublished - 1993


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