A FAMILY OF ELEMENTS WITH LAMBDA-SINGULARITY

A new finite element family which contains a lambda singularity is dev eloped. Three elements are derived; namely three-, four- and five-node d elements which are compatible with linear, quadratic and cubic stand ard isoparametric finite elements, respectively. The elements are test ed on two different examples. In the first example, an edge crack prob lem is analysed using two different meshes and different integration o rders. The second example is a crack perpendicular to the interface pr oblem which is solved for different material properties and, in turn, different singularity order lambda. The results of those examples illu strate the efficiency of the proposed elements. Copyright (C) 1996.