Handy incorporation of bond and singularity elements in the finite element solution routine

Bond and singularity elements are outcomes of the efforts to cope with two peculiarities inherent to the mechanics of continua, one being the discontinuity of certain displacement and stress components along the interface of bodies in contact and the other the singularity in strain and stress distributions at the crack tip. Present paper introduces a mapping technique and it is shown that both elements can be treated in a unified manner and incorporated into the standard finite element solution routine with a minimum modification of the computer program. (orig.)