THREE-DIMENSIONAL CRACK-FACE WEIGHT FUNCTIONS FOR THE SEMI-INFINTE INTERFACE CRACK

摘要

The aim of this paper is to provide the expressionsof Bueckner's fundamental three-dimensional crack face weightfunctions for a semi-infinite interface crack in an infinite bodyThe method of solution avoids the calculation of the fullmechanical fields in the elasticity problems implied butconcentrates instead on the sole feature of interest, namely thedistribution of the stress intensity factors along the crack front Itis inspired from previous works of Gao and Rice on the onehand and Leblond, Mouchrif and Perrin on the other hand. Theresults are given in a totally explicit, analytic form to the firstorder in the "bimaterial constant" #implied by#. Their only non-elementary feature is the appearance of an indefinite integral ofthe type integral ?n x/(x+a) dx.