Self adaptive mesh generation for 3-D finite element calculation

A three-dimensional, fully self-adaptive finite-element procedure is presented, based on the use of complementary variational principles. The use of the dual formulation ensures overall accuracy and provides a way of implementing localized mesh refinement. The initial problem meshing is achieved using a mesh generation technique based on the method of Delaunay tessellation. This work is an extension of techniques previously used successfully for two-dimensional representations