Abstract
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 language | English |
---|---|
Pages (from-to) | 43-66 |
Journal | International Journal for Numerical Methods in Engineering |
Volume | 36 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1993 |